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Q1242175 Inglês
“Effective teachers are typically defined as those whose students perform better on standardized achievement tests. In a study of effective teachers in bilingual education programs in California and Hawaii, for example, Tikunoff (1985) observed teachers to find out how they organize instruction, structure teaching activities, and enhance student performance on tasks.”
RICHARDS, Jack C. Theories of Teaching in Language Teaching. In: RICHARDS, J. C. & RENANDYA, W. A. Methodology in Language Teaching: An Anthology of Current Practice. Cambridge: Cambridge University Press, 2002, p. 21.


Which of the following characteristics is concerned with an effective teaching?
Alternativas
Q1242174 Inglês
Considering the reasons why studying the online world is crucial for understanding language, proposed by David Barton and Carmen Lee in “Language online: Investigating digital texts and practices” (2013), which of the following statements is CORRECT?
Alternativas
Q1242173 Inglês
“Two turtles were slowly crossing the dusty road when we passed by.” The verbal tense in the passage were slowly crossing is
Alternativas
Q1242172 Inglês
TEXT III

BABIES CAN LINK LANGUAGE AND ETHNICITY

A recent study from Canada's University of British Columbia (UBC) suggests that eleven-month-old infants can learn to associate the language they hear with ethnicity.
The research, published by Developmental Psychobiology, found that 11-month-old infants looked more at the faces of people of Asian descent compared to those of Caucasian descent when hearing Cantonese but not when hearing Spanish.
“Our findings suggest that by 11 months, infants are making connections between languages and ethnicities based on the individuals they encounter in their environments. In learning about language, infants are doing more than picking up sounds and sentences—they also learn about the speakers of language,” said Lillian May, a psychology lecturer at UBC who was lead author of the study.
The research was done in Vancouver, where approximately nine percent of the population can speak Cantonese.
The researchers played English-learning infants of Caucasian ancestry sentences in both English and Cantonese and showed them pictures of people of Caucasian descent, and of Asian descent. When the infants heard Cantonese, they looked more at the Asian faces than when they were hearing English. When they heard English, they looked equally to Asian and Caucasian faces.
“This indicates that they have already learned that in Vancouver, both Caucasians and Asians are likely to speak English, but only Asians are likely to speak Cantonese,” noted UBC psychology professor Janet Werker, the study's senior author.
The researchers showed the same pictures to the infants while playing Spanish, to see whether they were inclined to associate any unfamiliar language with any unfamiliar ethnicity. However, in that test the infants looked equally to Asian and Caucasian faces. This suggests young infants pick up on specific language-ethnicity pairings based on the faces and languages they encounter.
“Babies are learning so much about language—even about its social use—long before they produce their first word,” said Werker. “The link between speaker characteristics and language is something no one has to teach babies. They learn it all on their own.” “The ability to link language and ethnicity might help babies with language acquisition. We are now probing this possibility. For example, does a bilingual Chinese-English baby expect Chinese words from a Southeast Asian speaker and English words from a Caucasian speaker? Our preliminary results indicate that indeed, babies are using their expectations about language and ethnicity as another source of information in language learning,” added Werker.
Source: “Babies can link language and ethnicity”. Language Magazine <https://www.languagemagazine.com/2019/06/28/babiescan-link-language-and-ethnicity/> Language Magazine, June 28, 2019



However, in that test the infants looked equally to Asian and Caucasian faces.” What is the meaning of the expression however?
Alternativas
Q1242171 Inglês
TEXT III

BABIES CAN LINK LANGUAGE AND ETHNICITY

A recent study from Canada's University of British Columbia (UBC) suggests that eleven-month-old infants can learn to associate the language they hear with ethnicity.
The research, published by Developmental Psychobiology, found that 11-month-old infants looked more at the faces of people of Asian descent compared to those of Caucasian descent when hearing Cantonese but not when hearing Spanish.
“Our findings suggest that by 11 months, infants are making connections between languages and ethnicities based on the individuals they encounter in their environments. In learning about language, infants are doing more than picking up sounds and sentences—they also learn about the speakers of language,” said Lillian May, a psychology lecturer at UBC who was lead author of the study.
The research was done in Vancouver, where approximately nine percent of the population can speak Cantonese.
The researchers played English-learning infants of Caucasian ancestry sentences in both English and Cantonese and showed them pictures of people of Caucasian descent, and of Asian descent. When the infants heard Cantonese, they looked more at the Asian faces than when they were hearing English. When they heard English, they looked equally to Asian and Caucasian faces.
“This indicates that they have already learned that in Vancouver, both Caucasians and Asians are likely to speak English, but only Asians are likely to speak Cantonese,” noted UBC psychology professor Janet Werker, the study's senior author.
The researchers showed the same pictures to the infants while playing Spanish, to see whether they were inclined to associate any unfamiliar language with any unfamiliar ethnicity. However, in that test the infants looked equally to Asian and Caucasian faces. This suggests young infants pick up on specific language-ethnicity pairings based on the faces and languages they encounter.
“Babies are learning so much about language—even about its social use—long before they produce their first word,” said Werker. “The link between speaker characteristics and language is something no one has to teach babies. They learn it all on their own.” “The ability to link language and ethnicity might help babies with language acquisition. We are now probing this possibility. For example, does a bilingual Chinese-English baby expect Chinese words from a Southeast Asian speaker and English words from a Caucasian speaker? Our preliminary results indicate that indeed, babies are using their expectations about language and ethnicity as another source of information in language learning,” added Werker.
Source: “Babies can link language and ethnicity”. Language Magazine <https://www.languagemagazine.com/2019/06/28/babiescan-link-language-and-ethnicity/> Language Magazine, June 28, 2019



According to the text, which of the following statements is TRUE?
Alternativas
Q1242170 Inglês

TEXT II

Imagem associada para resolução da questão

Source: AZCENTRALDaily Comics http://comics.azcentral.com/slideshow?comic=Dustin&feature_id=Dustin



According to the comics, it is CORRECTto say that:
Alternativas
Q1242169 Inglês

TEXT I


LEARNING LANGUAGE: NEWINSIGHTS INTO HOWBRAIN FUNCTIONS

For most native English-speakers, learning the Mandarin Chinese language from scratch is no easy task.



          Learning it in a class that essentially compresses a one-semester college course into a single month of intensive instruction -- and agreeing to have your brain scanned before and after -- might seem even more daunting. 

         But the 24 Americans who did just that have enabled University of Delaware cognitive neuroscientist Zhenghan Qi and her colleagues to make new discoveries about how adults learn a foreign language.

      The study, published in May in the journal NeuroImage, focused on the roles of the brain's left and right hemispheres in language acquisition. The findings could lead to instructional methods that potentially improve students' success in learning a new language.

      "The left hemisphere is known as the language-learning part of the brain, but we found that it was the right hemisphere that determined the eventual success" in learning Mandarin, said Qi, assistant professor of linguistics and cognitive science.

      "This was new," she said. "For decades, everyone has focused on the left hemisphere, and the right hemisphere has been largely overlooked."

       The left hemisphere is undoubtedly important in language learning, Qi said, noting that clinical research on individuals with speech disorders has indicated that the left side of the brain is in many ways the hub of language processing.

    But, she said, before any individuals -- infants learning their native language or adults learning a second language -- begin processing such aspects of the new language as vocabulary and grammar, they must first learn to identify its basic sounds or phonological elements.

      It's during that process of distinguishing "acoustic details" of sounds where the right side of the brain is key, according to the new findings.

      Researchers began by exposing the 24 participants in the study to pairs of sounds that were similar but began with different consonants, such as "bah" and "nah," and having them describe the tones, Qi said.

      "We asked: Were the tones of those two sounds similar or different?" she said. "We used the brain activation patterns during this task to predict who would be the most successful learners" of the new language.

     The study continued by teaching the participants in a setting designed to replicate a college language class, although the usual semester was condensed into four weeks of instruction. Students attended class for three and a half hours a day, five days a week, completed homework assignments and took tests. 

     "Our research is the first to look at attainment and long-term retention of real-world language learned in a classroom setting, which is how most people learn a new language," Qi said.

        By scanning each participant's brain with functional MRI (magnetic resonance imaging) at the beginning and end of the project, the scientists were able to see which part of the brain was most engaged while processing basic sound elements in Mandarin. To their surprise, they found that -- although, as expected, the left hemisphere showed a substantial increase of activation later in the learning process -- the right hemisphere in the most successful learners was most active in the early, sound-recognition stage.

     "It turns out that the right hemisphere is very important in processing foreign speech sounds at the beginning of learning," Qi said. She added that the right hemisphere's role then seems to diminish in those successful learners as they continue learning the language.

     Additional research will investigate whether the findings apply to those learning other languages, not just Mandarin. The eventual goal is to explore whether someone can practice sound recognition early in the process of learning a new language to potentially improve their success.

       "We found that the more active the right hemisphere is, the more sensitive the listener is to acoustic differences in sound," Qi said. "Everyone has different levels of activation, but even if you don't have that sensitivity to begin with, you can still learn successfully if your brain is plastic enough."

     Researchers can't say for certain how to apply these findings to real-life learning, but when it comes down to it, "Adults are trainable," Qi said. "They can train themselves to become more sensitive to foreign speech sounds."


( S o u r c e : U n i v e r s i t y o f D e l a w a r e . " L e a r n i n g l a n g u a g e : N e w i n s i g h t s i n t o h o w b r a i n f u n c t i o n s . " S c i e n c e D a i l y .<www.sciencedaily.com/releases/2019/05/190508093716.htm> ScienceDaily, 8 May 2019).


“Learning it in a class that essentially compresses a one-semester college course into a single month of intensive instruction -- and agreeing to have your brain scanned before and after -- might seem even more daunting.” The word daunting can be substituted by
Alternativas
Q1242168 Inglês

TEXT I


LEARNING LANGUAGE: NEWINSIGHTS INTO HOWBRAIN FUNCTIONS

For most native English-speakers, learning the Mandarin Chinese language from scratch is no easy task.



          Learning it in a class that essentially compresses a one-semester college course into a single month of intensive instruction -- and agreeing to have your brain scanned before and after -- might seem even more daunting. 

         But the 24 Americans who did just that have enabled University of Delaware cognitive neuroscientist Zhenghan Qi and her colleagues to make new discoveries about how adults learn a foreign language.

      The study, published in May in the journal NeuroImage, focused on the roles of the brain's left and right hemispheres in language acquisition. The findings could lead to instructional methods that potentially improve students' success in learning a new language.

      "The left hemisphere is known as the language-learning part of the brain, but we found that it was the right hemisphere that determined the eventual success" in learning Mandarin, said Qi, assistant professor of linguistics and cognitive science.

      "This was new," she said. "For decades, everyone has focused on the left hemisphere, and the right hemisphere has been largely overlooked."

       The left hemisphere is undoubtedly important in language learning, Qi said, noting that clinical research on individuals with speech disorders has indicated that the left side of the brain is in many ways the hub of language processing.

    But, she said, before any individuals -- infants learning their native language or adults learning a second language -- begin processing such aspects of the new language as vocabulary and grammar, they must first learn to identify its basic sounds or phonological elements.

      It's during that process of distinguishing "acoustic details" of sounds where the right side of the brain is key, according to the new findings.

      Researchers began by exposing the 24 participants in the study to pairs of sounds that were similar but began with different consonants, such as "bah" and "nah," and having them describe the tones, Qi said.

      "We asked: Were the tones of those two sounds similar or different?" she said. "We used the brain activation patterns during this task to predict who would be the most successful learners" of the new language.

     The study continued by teaching the participants in a setting designed to replicate a college language class, although the usual semester was condensed into four weeks of instruction. Students attended class for three and a half hours a day, five days a week, completed homework assignments and took tests. 

     "Our research is the first to look at attainment and long-term retention of real-world language learned in a classroom setting, which is how most people learn a new language," Qi said.

        By scanning each participant's brain with functional MRI (magnetic resonance imaging) at the beginning and end of the project, the scientists were able to see which part of the brain was most engaged while processing basic sound elements in Mandarin. To their surprise, they found that -- although, as expected, the left hemisphere showed a substantial increase of activation later in the learning process -- the right hemisphere in the most successful learners was most active in the early, sound-recognition stage.

     "It turns out that the right hemisphere is very important in processing foreign speech sounds at the beginning of learning," Qi said. She added that the right hemisphere's role then seems to diminish in those successful learners as they continue learning the language.

     Additional research will investigate whether the findings apply to those learning other languages, not just Mandarin. The eventual goal is to explore whether someone can practice sound recognition early in the process of learning a new language to potentially improve their success.

       "We found that the more active the right hemisphere is, the more sensitive the listener is to acoustic differences in sound," Qi said. "Everyone has different levels of activation, but even if you don't have that sensitivity to begin with, you can still learn successfully if your brain is plastic enough."

     Researchers can't say for certain how to apply these findings to real-life learning, but when it comes down to it, "Adults are trainable," Qi said. "They can train themselves to become more sensitive to foreign speech sounds."


( S o u r c e : U n i v e r s i t y o f D e l a w a r e . " L e a r n i n g l a n g u a g e : N e w i n s i g h t s i n t o h o w b r a i n f u n c t i o n s . " S c i e n c e D a i l y .<www.sciencedaily.com/releases/2019/05/190508093716.htm> ScienceDaily, 8 May 2019).


“The study continued by teaching the participants in a setting designed to replicate a college language class, although the usual semester was condensed into four weeks of instruction.” What is the meaning of the expression although?
Alternativas
Q1242167 Inglês

TEXT I


LEARNING LANGUAGE: NEWINSIGHTS INTO HOWBRAIN FUNCTIONS

For most native English-speakers, learning the Mandarin Chinese language from scratch is no easy task.



          Learning it in a class that essentially compresses a one-semester college course into a single month of intensive instruction -- and agreeing to have your brain scanned before and after -- might seem even more daunting. 

         But the 24 Americans who did just that have enabled University of Delaware cognitive neuroscientist Zhenghan Qi and her colleagues to make new discoveries about how adults learn a foreign language.

      The study, published in May in the journal NeuroImage, focused on the roles of the brain's left and right hemispheres in language acquisition. The findings could lead to instructional methods that potentially improve students' success in learning a new language.

      "The left hemisphere is known as the language-learning part of the brain, but we found that it was the right hemisphere that determined the eventual success" in learning Mandarin, said Qi, assistant professor of linguistics and cognitive science.

      "This was new," she said. "For decades, everyone has focused on the left hemisphere, and the right hemisphere has been largely overlooked."

       The left hemisphere is undoubtedly important in language learning, Qi said, noting that clinical research on individuals with speech disorders has indicated that the left side of the brain is in many ways the hub of language processing.

    But, she said, before any individuals -- infants learning their native language or adults learning a second language -- begin processing such aspects of the new language as vocabulary and grammar, they must first learn to identify its basic sounds or phonological elements.

      It's during that process of distinguishing "acoustic details" of sounds where the right side of the brain is key, according to the new findings.

      Researchers began by exposing the 24 participants in the study to pairs of sounds that were similar but began with different consonants, such as "bah" and "nah," and having them describe the tones, Qi said.

      "We asked: Were the tones of those two sounds similar or different?" she said. "We used the brain activation patterns during this task to predict who would be the most successful learners" of the new language.

     The study continued by teaching the participants in a setting designed to replicate a college language class, although the usual semester was condensed into four weeks of instruction. Students attended class for three and a half hours a day, five days a week, completed homework assignments and took tests. 

     "Our research is the first to look at attainment and long-term retention of real-world language learned in a classroom setting, which is how most people learn a new language," Qi said.

        By scanning each participant's brain with functional MRI (magnetic resonance imaging) at the beginning and end of the project, the scientists were able to see which part of the brain was most engaged while processing basic sound elements in Mandarin. To their surprise, they found that -- although, as expected, the left hemisphere showed a substantial increase of activation later in the learning process -- the right hemisphere in the most successful learners was most active in the early, sound-recognition stage.

     "It turns out that the right hemisphere is very important in processing foreign speech sounds at the beginning of learning," Qi said. She added that the right hemisphere's role then seems to diminish in those successful learners as they continue learning the language.

     Additional research will investigate whether the findings apply to those learning other languages, not just Mandarin. The eventual goal is to explore whether someone can practice sound recognition early in the process of learning a new language to potentially improve their success.

       "We found that the more active the right hemisphere is, the more sensitive the listener is to acoustic differences in sound," Qi said. "Everyone has different levels of activation, but even if you don't have that sensitivity to begin with, you can still learn successfully if your brain is plastic enough."

     Researchers can't say for certain how to apply these findings to real-life learning, but when it comes down to it, "Adults are trainable," Qi said. "They can train themselves to become more sensitive to foreign speech sounds."


( S o u r c e : U n i v e r s i t y o f D e l a w a r e . " L e a r n i n g l a n g u a g e : N e w i n s i g h t s i n t o h o w b r a i n f u n c t i o n s . " S c i e n c e D a i l y .<www.sciencedaily.com/releases/2019/05/190508093716.htm> ScienceDaily, 8 May 2019).


According to the text, it is CORRECTto say that:
Alternativas
Q1242166 Inglês

TEXT I


LEARNING LANGUAGE: NEWINSIGHTS INTO HOWBRAIN FUNCTIONS

For most native English-speakers, learning the Mandarin Chinese language from scratch is no easy task.



          Learning it in a class that essentially compresses a one-semester college course into a single month of intensive instruction -- and agreeing to have your brain scanned before and after -- might seem even more daunting. 

         But the 24 Americans who did just that have enabled University of Delaware cognitive neuroscientist Zhenghan Qi and her colleagues to make new discoveries about how adults learn a foreign language.

      The study, published in May in the journal NeuroImage, focused on the roles of the brain's left and right hemispheres in language acquisition. The findings could lead to instructional methods that potentially improve students' success in learning a new language.

      "The left hemisphere is known as the language-learning part of the brain, but we found that it was the right hemisphere that determined the eventual success" in learning Mandarin, said Qi, assistant professor of linguistics and cognitive science.

      "This was new," she said. "For decades, everyone has focused on the left hemisphere, and the right hemisphere has been largely overlooked."

       The left hemisphere is undoubtedly important in language learning, Qi said, noting that clinical research on individuals with speech disorders has indicated that the left side of the brain is in many ways the hub of language processing.

    But, she said, before any individuals -- infants learning their native language or adults learning a second language -- begin processing such aspects of the new language as vocabulary and grammar, they must first learn to identify its basic sounds or phonological elements.

      It's during that process of distinguishing "acoustic details" of sounds where the right side of the brain is key, according to the new findings.

      Researchers began by exposing the 24 participants in the study to pairs of sounds that were similar but began with different consonants, such as "bah" and "nah," and having them describe the tones, Qi said.

      "We asked: Were the tones of those two sounds similar or different?" she said. "We used the brain activation patterns during this task to predict who would be the most successful learners" of the new language.

     The study continued by teaching the participants in a setting designed to replicate a college language class, although the usual semester was condensed into four weeks of instruction. Students attended class for three and a half hours a day, five days a week, completed homework assignments and took tests. 

     "Our research is the first to look at attainment and long-term retention of real-world language learned in a classroom setting, which is how most people learn a new language," Qi said.

        By scanning each participant's brain with functional MRI (magnetic resonance imaging) at the beginning and end of the project, the scientists were able to see which part of the brain was most engaged while processing basic sound elements in Mandarin. To their surprise, they found that -- although, as expected, the left hemisphere showed a substantial increase of activation later in the learning process -- the right hemisphere in the most successful learners was most active in the early, sound-recognition stage.

     "It turns out that the right hemisphere is very important in processing foreign speech sounds at the beginning of learning," Qi said. She added that the right hemisphere's role then seems to diminish in those successful learners as they continue learning the language.

     Additional research will investigate whether the findings apply to those learning other languages, not just Mandarin. The eventual goal is to explore whether someone can practice sound recognition early in the process of learning a new language to potentially improve their success.

       "We found that the more active the right hemisphere is, the more sensitive the listener is to acoustic differences in sound," Qi said. "Everyone has different levels of activation, but even if you don't have that sensitivity to begin with, you can still learn successfully if your brain is plastic enough."

     Researchers can't say for certain how to apply these findings to real-life learning, but when it comes down to it, "Adults are trainable," Qi said. "They can train themselves to become more sensitive to foreign speech sounds."


( S o u r c e : U n i v e r s i t y o f D e l a w a r e . " L e a r n i n g l a n g u a g e : N e w i n s i g h t s i n t o h o w b r a i n f u n c t i o n s . " S c i e n c e D a i l y .<www.sciencedaily.com/releases/2019/05/190508093716.htm> ScienceDaily, 8 May 2019).


What is the purpose of the research developed by Zhenghan Qi and her colleagues from the University of Delaware?
Alternativas
Q1242165 Biologia
A maioria das folhas dos vegetais que compõem as florestas ombrófilas é de coloração verde. A cor dos vegetais tem a ver com a fotossíntese, que acontece nos cloroplastos onde se localiza a clorofila. Aclorofila atua absorvendo a luz.
A partir deste contexto, analise as asserções a seguir:
I- Nas folhas verdes os comprimentos de onda verde são os mais absorvidos pela clorofila.
Porque
II- Aclorofila dos cloroplastos das folhas verdes reflete comprimentos de onda vermelho.
A respeito dessas asserções, assinale a opção CORRETA.
Alternativas
Q1242164 Biologia
Na tentativa de compreensão da origem da vida, foram feitas muitas pesquisas em laboratório sobre os tipos de reações químicas. A partir de solução de moléculas simples, tais como aquelas que provavelmente existiram nos mares pré-bióticos, é possível a síntese de algumas moléculas, como aminoácidos, açúcares e nucleotídeos. Fonte: Ridley, M. Evolução. 3ª ed. Porto Alegre, Artmed. 2006.
Dentro desse cenário, discute-se qual seria a molécula replicável mais ancestral, cuja hipótese mais aceita atualmente é a de que seja o
Alternativas
Q1242163 Biologia
Quando duas faunas anteriormente separadas entram em contato ocorrem eventos chamados de intercâmbios bióticos. Um dos principais exemplos destes casos é o Grande Intercambio Americano, fruto tanto do processo da tectônica das placas quanto da dispersão das espécies. As Américas do Norte e do Sul foram religadas pelo istmo do Panamá e uma das consequências foi o trânsito da fauna entre os continentes. Um estudo acerca do número de gêneros de mamíferos na sucessão do tempo indicou que a América do Norte possuía uma maior quantidade de gêneros que migraram para a América do Sul, em relação ao número de gêneros que migraram da América do Sul para a do Norte. Contudo, o percentual de migração foi o mesmo, cerca de 10% dos gêneros de cada lado migraram na direção oposta com sucesso. Apesar dessa equivalência percentual, a proliferação dos mamíferos norte-americanos que emigraram para o sul foi maior. O resultado foi que dos 12 gêneros imigrantes do Sul derivaram 3 novos gêneros, enquanto que 21 gêneros imigrantes do Norte deram origem a 49 novos gêneros. Fonte: Ridley, M. Evolução. 3ª ed. Porto Alegre, Artmed. 2006.
Sobre o Grande Intercambio Americano conclui-se que:
Alternativas
Q1242162 Biologia
Serviços ecossistêmicos são os benefícios de importância econômica e social que as pessoas obtêm da natureza. A Classificação Internacional Comum dos Serviços Ecossistêmicos (CICES) os divide em três categorias: provisão (benefícios de produtos obtidos da natureza), regulação (benefícios das regulações do ambiente feitas por ecossistemas e/ou seres vivos) e culturais (benefícios para a cultura e relações sociais a partir do contato com a natureza). Processos ecológicos como produção de oxigênio atmosférico, ciclagem de nutrientes, formação e retenção de solos e ciclagem da água são serviços ecossistêmicos de suporte, considerados como funções ecossistêmicas que são necessárias para a produção de todos os demais serviços ecossistêmicos. Assim, os serviços ecossistêmicos constituem-se como um argumento poderoso para a preservação da biodiversidade. Fonte: BRASIL, Ministério do Meio Ambiente. Economia dos Ecossistemas e da Biodiversidade. Disponível em http://www.mma.gov.br/biodiversidade/economiados-ecossistemas-e-da-biodiversidade/>. Acessado em 25 de junho de 2019.
Um benefício dos serviços ecossistêmicos de regulação que justifica a preservação da biodiversidade local é:
Alternativas
Q1242161 Ciências
O movimento de divulgação da ideia de que a Terra é plana é um pensamento anti-intelectual em ascensão no mundo inteiro. Defensores desta ideia refutam algumas hipóteses, leis e teorias bem estabelecidas que sustentam a ideia de que a Terra é esférica. Avalie os argumentos abaixo elencados, usados em discussões sobre esta controvérsia.
I- Eclipses lunares: o Sol projeta a sombra esférica da Terra na Lua. II- Nascer e pôr do Sol: pessoas em diferentes continentes não veem ao mesmo tempo o nascer ou o pôr do Sol. III- Durações dos dias e das noites: os dias e as noites têm o mesmo tempo de duração em todos os locais do planeta. IV- Estações do ano: o Sol assume diferentes órbitas com diferentes tamanhos de raios, fazendo com que se aproxime ou se afaste dos trópicos, originando assim as estações do ano. V- Volta o mundo: seguindo-se sempre numa mesma direção é possível retornar ao ponto de partida, ao invés de se chegar a uma borda ou se afastar indefinidamente da origem. VI- Observação no horizonte: ao observarmos um barco desaparecer no horizonte ele vai ficando cada vez menor até que não seja mais possível vê-lo.
Para contra argumentar a ideia da Terra plana com a exposição de evidências de que a Terra é esférica, docentes de ciências devem se respaldar em argumentos tais como os citados em:
Alternativas
Q1242160 Ciências
Quando uma árvore cai numa floresta isolada, sem que nenhum animal possa ouvir, há propagação do som? 
Alternativas
Q1242159 Biologia
A sexualidade abrange aspectos biológicos, psíquicos, sociais, culturais e históricos. Além da ausência de doenças, disfunções ou debilidades, a Organização Mundial de Saúde (OMS) define saúde sexual como um estado físico, emocional, mental e social de bem-estar em relação à sexualidade. Para se alcançar e manter a saúde sexual, os direitos sexuais de todas as pessoas devem ser respeitados, protegidos e satisfeitos. Fonte: Brasil. Ministério da Saúde. Secretaria de Atenção à Saúde. Departamento de Atenção Básica. Saúde sexual e saúde reprodutiva. 1. ed., 1. reimpr. – Brasília: Ministério da Saúde, 2013.
Considerando esse contexto, analise as asserções a seguir:
I- Sexo se refere a um conjunto de características genotípicas e biológicas, enquanto que o gênero é uma construção social e histórica.
Porque
II- Gênero é um conceito que se refere a um sistema de atributos sociais, tais como papéis, crenças, atitudes e relações entre mulheres e homens, os quais não são determinados biologicamente, e que contribuem para orientar o sentido do que é ser homem ou ser mulher numa dada sociedade.
A respeito dessas asserções, assinale a opção CORRETA.
Alternativas
Q1242158 Biologia
Recentemente uma equipe de pesquisadores identificou que o enhancer, uma região do DNA até então considerada como “DNA lixo”, estava relacionada com o desenvolvimento de membros nos vertebrados. A primeira evidência para essa inferência foi a partir de um experimento que analisava a expressão do enhancer de 17 vertebrados, incluindo peixes, aves, mamíferos, lagartos e cobras. A equipe clonou o a região do enhancer de cada um destes vertebrados em plasmídeos, que foram injetados em camundongos. Os resultados do experimento mostraram que, com exceção do enhancer da cobra, todos os outros imprimiram expressão na pata do camundongo.
Em um segundo momento, utilizando a técnica Crispr, pesquisadores substituíram o enhancer de um camundongo pelo enhancer de uma cobra. O resultado foi o desenvolvimento de um camundongo sem patas. Após identificar a diferença do enhancer das cobras em relação ao das outras espécies de vertebrados, o terceiro passo foi corrigir o DNAda cobra para tentar recapitular a função do enhancer. Assim trocaram o enhancer do camundongo, por um enhancer corrigido de cobra. O resultado foi o desenvolvimento de um camundongo com patas. Portanto, a pesquisa sugeriu que a degeneração do enhancer foi o motivo pelo qual as cobras deixaram de ter patas durante o seu processo evolutivo. Fonte: Kvon, E. Z. et al.Progressive loss of function in a limb enhancer during snake evolution. Cell 167, pp. 633–642, 2016.
A partir desse experimento, conclui-se que um dos eventos evolutivos que permitiu a perda das patas durante a evolução das cobras foi 
Alternativas
Q1242157 Biologia

A Organização Mundial da Saúde (OMS), publicou uma lista com as dez ameaças à saúde global em 2019. Dentre elas destaca-se o movimento antivacina. Entre as razões pelas quais se escolhe não vacinar estão complacência, inconveniência no acesso a vacinas e falta de confiança.

Fonte: OMS - Organização Mundial da Saúde. Ten threats to global health in 2019. Disponível em: https://www.who.int/fr/emergencies/ten-threats-to-global-health-in2019


Nesse contexto, é justificável 

Alternativas
Q1242156 Biologia
Uma das formas de diminuir o problema dos resíduos sólidos é através da reciclagem química de plásticos (polímeros), a qual utiliza processos tais como hidrogenação, gaseificação, pirólise e quimólise, para obtenção de monômeros ou misturas de hidrocarbonetos que serão utilizados como matéria prima em refinarias e centrais petroquímicas.
Este tipo de processo também pode ser observado
I- na efervescência de um comprimido colocado em um copo com água. II- no precipitado da mistura do açúcar em uma xícara de café. III- na eletricidade liberada pelas pilhas em um controle remoto. IV- no congelamento da água colocada em recipiente no refrigerador. V- na mudança da coloração de uma maçã apodrecida. VI- na evaporação do álcool cujo frasco ficou destampado.
É CORRETO o que se afirma em:
Alternativas
Respostas
81: B
82: C
83: E
84: D
85: A
86: D
87: E
88: A
89: C
90: B
91: A
92: B
93: E
94: E
95: C
96: A
97: D
98: B
99: D
100: A