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Q1335083 Inglês

Read the text below and answer the following question based on it. 


Is gene editing ethical?


Gene editing is the modification of DNA sequences in living cells. What that means in reality is that researchers can either add mutations or substitute genes in cells or organisms. 
Gene editing holds the key to preventing or treating debilitating genetic diseases, giving hope to millions of people around the world. Yet the same technology could unlock the path to designing our future children, enhancing their genome by selecting desirable traits such as height, eye color, and intelligence. 
While this concept is not new, a real breakthrough came 5 years ago when several scientists saw the potential of a system called CRISPR/Cas9 to edit the human genome.
CRISPR/Cas9 allows us to target specific locations in the genome with much more precision than previous techniques. This process allows a faulty gene to be replaced with a non-faulty copy, making this technology attractive to those looking to cure genetic diseases. 
The technology is not foolproof, however. Scientists have been modifying genes for decades, but there are always trade-offs. We have yet to develop a technique that works 100 percent and doesn't lead to unwanted and uncontrollable mutations in other locations in the genome.
In a laboratory experiment, these so-called off-target effects are not the end of the world. But when it comes to gene editing in humans, this is a major stumbling block.
The fact that gene editing is possible in human embryos has opened a Pandora's box of ethical issues.
Here, the ethical debate around gene editing really gets off the ground. 
When gene editing is used in embryos — or earlier, on the sperm or egg of carriers of genetic mutations — it is called germline gene editing. The big issue here is that it affects both the individual receiving the treatment and their future children. 
This is a potential game-changer as it implies that we may be able to change the genetic makeup of entire generations on a permanent basis. 


Adaptado de:<https://www.medicalnewstoday.com/articles/319817  (Acessado em 21 de outubro de 2017)
As for the new CRISPR/Cas9 system technique,
Alternativas
Q1335082 Inglês

Read the text below and answer the following question based on it. 


Is gene editing ethical?


Gene editing is the modification of DNA sequences in living cells. What that means in reality is that researchers can either add mutations or substitute genes in cells or organisms. 
Gene editing holds the key to preventing or treating debilitating genetic diseases, giving hope to millions of people around the world. Yet the same technology could unlock the path to designing our future children, enhancing their genome by selecting desirable traits such as height, eye color, and intelligence. 
While this concept is not new, a real breakthrough came 5 years ago when several scientists saw the potential of a system called CRISPR/Cas9 to edit the human genome.
CRISPR/Cas9 allows us to target specific locations in the genome with much more precision than previous techniques. This process allows a faulty gene to be replaced with a non-faulty copy, making this technology attractive to those looking to cure genetic diseases. 
The technology is not foolproof, however. Scientists have been modifying genes for decades, but there are always trade-offs. We have yet to develop a technique that works 100 percent and doesn't lead to unwanted and uncontrollable mutations in other locations in the genome.
In a laboratory experiment, these so-called off-target effects are not the end of the world. But when it comes to gene editing in humans, this is a major stumbling block.
The fact that gene editing is possible in human embryos has opened a Pandora's box of ethical issues.
Here, the ethical debate around gene editing really gets off the ground. 
When gene editing is used in embryos — or earlier, on the sperm or egg of carriers of genetic mutations — it is called germline gene editing. The big issue here is that it affects both the individual receiving the treatment and their future children. 
This is a potential game-changer as it implies that we may be able to change the genetic makeup of entire generations on a permanent basis. 


Adaptado de:<https://www.medicalnewstoday.com/articles/319817  (Acessado em 21 de outubro de 2017)
One could state that
Alternativas
Q1335081 Inglês
Read the text below and answer the following question based on it. 

Indian surgeons separate twins joined at the head 


Two-year-old Jaga and Kalia underwent 16 hours of surgery, and are now in the intensive care unit, doctors said. 
A team of 30 doctors carried out the surgery - the first of its kind in India - at a state-run hospital. 
The boys were born with shared blood vessels and brain tissues, a very rare condition that occurs once in about three million births. 
The director of the All India Institute of Medical Sciences, Randeep Guleria, told the Press Trust of India that the "next 18 days would be extremely critical to ascertain the success of the surgery". 
The twins, hailing from a village in eastern Orissa state, were joined at the head - a condition known as craniopagus. 
Even before the operation they had defeated the odds; craniopagus occurs in one in three million births, and 50% of those affected die within 24 hours, doctors say. 
"Both the children have other health issues as well. While Jaga has heart issues, Kalia has kidney problems," neurosurgeon A K Mahapatra said. 
"Though initially Jaga was healthier, now his condition has deteriorated. Kalia is better," he added. 
Doctors said the most challenging job after the separation was to "provide a skin cover on both sides of the brain for the children as the surgery had left large holes on their heads". 
"If the twins make it, the next step will be reconstructing their skulls," plastic surgeon Maneesh Singhal said. 
The first surgery was performed on 28 August when the doctors created a bypass to separate the shared veins that return blood to the heart from the brain. 

Adaptado de: <http://www.bbc.com/news/world-asia-india-41772987>Acessado em 27 de outubro de 2017. 
One of the greatest difficulties after the surgery
Alternativas
Q1335080 Inglês
Read the text below and answer the following question based on it. 

Indian surgeons separate twins joined at the head 


Two-year-old Jaga and Kalia underwent 16 hours of surgery, and are now in the intensive care unit, doctors said. 
A team of 30 doctors carried out the surgery - the first of its kind in India - at a state-run hospital. 
The boys were born with shared blood vessels and brain tissues, a very rare condition that occurs once in about three million births. 
The director of the All India Institute of Medical Sciences, Randeep Guleria, told the Press Trust of India that the "next 18 days would be extremely critical to ascertain the success of the surgery". 
The twins, hailing from a village in eastern Orissa state, were joined at the head - a condition known as craniopagus. 
Even before the operation they had defeated the odds; craniopagus occurs in one in three million births, and 50% of those affected die within 24 hours, doctors say. 
"Both the children have other health issues as well. While Jaga has heart issues, Kalia has kidney problems," neurosurgeon A K Mahapatra said. 
"Though initially Jaga was healthier, now his condition has deteriorated. Kalia is better," he added. 
Doctors said the most challenging job after the separation was to "provide a skin cover on both sides of the brain for the children as the surgery had left large holes on their heads". 
"If the twins make it, the next step will be reconstructing their skulls," plastic surgeon Maneesh Singhal said. 
The first surgery was performed on 28 August when the doctors created a bypass to separate the shared veins that return blood to the heart from the brain. 

Adaptado de: <http://www.bbc.com/news/world-asia-india-41772987>Acessado em 27 de outubro de 2017. 
The surgery to separate the twin brothers
Alternativas
Q1335079 Inglês
Read the text below and answer the following question based on it.  

Virtual reality may help relieve phantom limb pain.

In a recent study, patients experienced reduced phantom limb pain after playing an augmented reality car racing game that required them to move the missing limb. Phantom limb pain is the experience of pain in a limb after it has been amputated. 
The underlying mechanisms responsible for phantom limb pain remain unclear. However, it appears that it may arise as a consequence of abnormal neural circuitry in central areas of the brain.
Limited success has been achieved with mirror therapy in which reflections of the unaffected limb can be used to create the illusion that the amputated limb is moving. 
The latest study has taken the mirror therapy concept a step further; patients visualise and 'move' the phantom limb using augmented reality—‘phantom motor execution’. It was conducted in 14 patients who had been experiencing phantom limb pain since the amputation of an arm. 
Sensors that could detect muscular activity were attached to the stump of the missing arm. The signals received by these sensors were then used to produce an image of an active arm on a computer screen. 
Patients were trained to use these signals to control the virtual arm, drive a virtual race car around a track and to copy the movements of an arm on screen with their phantom movements. After twelve 2-hour treatment sessions, the patients underwent follow-up interviews 1, 3 and 6 months later. 
Based on the patients' ratings, the intensity, quality, and frequency of pain had reduced by 50% after the treatment.
At the start of the study, 12 patients reported feeling constant pain whereas only 6 did 6months after the treatment. However, one patient thought that there was not a considerable difference in the levels of phantom pain before and after treatment.


The experiment can be said to have been
Alternativas
Q1335078 Inglês
Read the text below and answer the following question based on it.  

Virtual reality may help relieve phantom limb pain.

In a recent study, patients experienced reduced phantom limb pain after playing an augmented reality car racing game that required them to move the missing limb. Phantom limb pain is the experience of pain in a limb after it has been amputated. 
The underlying mechanisms responsible for phantom limb pain remain unclear. However, it appears that it may arise as a consequence of abnormal neural circuitry in central areas of the brain.
Limited success has been achieved with mirror therapy in which reflections of the unaffected limb can be used to create the illusion that the amputated limb is moving. 
The latest study has taken the mirror therapy concept a step further; patients visualise and 'move' the phantom limb using augmented reality—‘phantom motor execution’. It was conducted in 14 patients who had been experiencing phantom limb pain since the amputation of an arm. 
Sensors that could detect muscular activity were attached to the stump of the missing arm. The signals received by these sensors were then used to produce an image of an active arm on a computer screen. 
Patients were trained to use these signals to control the virtual arm, drive a virtual race car around a track and to copy the movements of an arm on screen with their phantom movements. After twelve 2-hour treatment sessions, the patients underwent follow-up interviews 1, 3 and 6 months later. 
Based on the patients' ratings, the intensity, quality, and frequency of pain had reduced by 50% after the treatment.
At the start of the study, 12 patients reported feeling constant pain whereas only 6 did 6months after the treatment. However, one patient thought that there was not a considerable difference in the levels of phantom pain before and after treatment.


Phantom limb pain
Alternativas
Q1335077 Literatura
Analise o poema seguinte, da autoria do alagoano Jorge de Lima, poeta pertencente ao segundo período do movimento modernista.


Mulher proletária

Mulher proletária – única fábrica
que o operário tem, (fabrica filhos)
tu
na tua superprodução de máquina humana
forneces anjos para o Senhor Jesus
forneces braços para o senhor burguês. 

Mulher proletária,
o operário, teu proprietário,
há de ver, há de ver:
a tua produção,
a tua superprodução,
ao contrário das máquinas burguesas,
salvar o teu proprietário. 

(Jorge de Lima. Poesia completa. Rio de Janeiro: Nova Fronteira, 1980. 

O poema de Jorge de Lima pode exemplificar:


1) a opção da literatura brasileira por admitir como temática de sua produção as condições de vida precárias de setores da sociedade. 2) as desigualdades sociais vigentes na época do poeta entre proprietários e empregados. 3) a idealização com que os poetas enxergam a intervenção da mulher, em seu cotidiano. 4) a esperança de melhorias que nutre o suposto operário que dialoga com a mulher nos versos do poema.


Estão corretas as indicações em:

Alternativas
Q1335076 Literatura
Os romancistas, por vezes, criam em suas obras ‘figuras e espaços fantasiosos’ que, de tão significativos, passam a ganhar notoriedade e uma identidade quase real. É o caso de:
1) Brás Cubas, de Machado de Assis, e Macunaíma, de Oswald de Andrade.
2) Jeca Tatu, de Monteiro Lobato, e Iracema, de José de Alencar.
3) João Miramar, de Mário de Andrade, e Pasárgada, de Manuel Bandeira.
4) Poti, de José de Alencar, e Capitu, de Machado de Assis.
5) Severino, de João Cabral, e a cadela Baleia, em Vidas Secas, de Graciano Ramos.
Estão corretas as indicações em:
Alternativas
Q1335075 Literatura

Analise o fragmento de um poema transcrito abaixo.


Senhor Deus dos desgraçados! Dizei-me vós, Senhor Deus! Se eu deliro... ou se é verdade Tanto horror perante os céus?... Ó mar! por que não apagas Co’a esponja de tuas vagas? Do teu manto este borrão? Astros! noites! tempestades! Rolais das imensidades! Varrei os mares, tufão!...


(Castro Alves. Canto V de O navio negreiro).


O fragmento do poema transcrito acima poderia aplicar-se a fatos que temos presenciado nos dias de hoje, embora a literatura tenha como universo de referência a ficção. No caso desse poema – que se refere a fatos do mundo real:

Alternativas
Q1335074 Literatura
Em relação à poesia do Romantismo brasileiro analise o esquema abaixo. Em seguida, analise as afirmações que constam nas alternativas.
Um quadro que dê conta da poesia romântica brasileira pode ser sintetizado conforme o seguinte esquema:
- a 1ª. geração é chamada de ‘nacionalista ou indianista’;
- a 2ª. geração é conhecida como a ‘ultrarromântica’;
- a 3ª. geração é denominada de ‘condoreira’.  
1) Os representantes da 1ª. geração escolheram como tema a natureza tropical, o patriotismo e o elemento indígena brasileiro. 
2) Foi destaque entre os poetas da primeira geração, o poeta Gonçalves Dias, autor do conhecido poema Canção do Exílio.  
3) Os representantes da 2ª. geração alimentaram uma visão pessimista da vida e da sociedade. Têm como expoentes Casimiro de Abreu e José de Alencar. 
4) Os representantes da 3ª. geração destacaram-se por uma literatura de caráter social, que denunciava a desigualdade social e defendia a liberdade. 
5) Na 3ª. geração, merece destaque o poeta Castro Alves, que, em seu poema Navio Negreiro critica com veemência a escravidão que imperava no Brasil.  

Estão corretas as alternativas: 
  
Alternativas
Q1333323 Física
Considere que a figura a seguir mostra o gráfico da aceleração em função do tempo de um indivíduo que executa uma corrida em uma esteira ergométrica. Supondo que o indivíduo partiu do repouso, calcule a distância percorrida por ele no intervalo de t = 0 até t = 15,0 min.
Imagem associada para resolução da questão


Alternativas
Q1333296 Química
O relógio de carbono, utilizado para datação de objetos antigos, baseia-se na desintegração radioativa do isótopo Imagem associada para resolução da questão (emissor de partículas Imagem associada para resolução da questão com tempo de meia-vida de 5.730 anos), de acordo com a equação da reação:
Imagem associada para resolução da questão

Qual é a substância X formada após a desintegração do isótopo Imagem associada para resolução da questão?
Alternativas
Q1333293 Biologia
Os interferons são importantes moléculas produzidas na resposta imune contra agentes infecciosos. Sobre os interferons, é correto afirmar que:
Alternativas
Q1333292 Biologia
O controle do ritmo respiratório é realizado pelo bulbo raquidiano e é essencial para a homeostase do corpo humano. Assim, quando a concentração de gás carbônico no sangue está alta:
Alternativas
Q1333289 Biologia
A teníase é uma doença provocada por Taenia solium ou Taenia saginata, quando estes parasitas infectam animais e seres humanos. É correto afirmar que ambas as espécies de tênias:
1) são hermafroditas.
2) infectam o intestino delgado de humanos.
3) podem provocar cisticercose.
4) têm o porco como hospedeiro intermediário.
Estão corretas:
Alternativas
Q1333288 Biologia
Animais celomados, ou seja, aqueles que apresentam celoma verdadeiro, devem ter a cavidade embrionária revestida por mesoderme. Não estão, portanto, incluídos nesse grupo:
Alternativas
Q1333286 Biologia
Considerando a prática de exercício físico, não é correto afirmar que o aumento de massa muscular ocorre em tecidos cujas:
Alternativas
Q1333285 Biologia
No filme “Perdido em Marte”, de 2015, o personagem interpretado pelo ator Matt Damon tem de plantar batatas inglesas, numa estufa improvisada, para sobreviver sozinho naquele planeta. Nesse contexto, podemos afirmar que tais batatas:
1) são parênquimas amilíferos, ou seja, caules com função de reserva.
2) podem originar plantas, se semeadas a partir dos tubérculos.
3) armazenam substâncias de reserva, como o amido, no interior de leucoplastos.
Está(ão) correta(s):
Alternativas
Q1333284 Biologia

Leia a notícia abaixo:

“Número de focos de incêndio em setembro é o maior de toda a série histórica do Inpe, iniciada em 1999. Considerando o período de janeiro a setembro, o ano de 2017 já é o 2º com mais pontos de calor.”

Fonte: https://g1.globo.com/natureza/noticia/brasil-tem-mes-commaior-numero-de-queimadas-da-historia.ghtml 


É correto afirmar que, após a ocorrência de queimadas em uma dada floresta, haverá: 


Alternativas
Q1333281 Biologia
O RNA ribossômico é considerado um marcador da evolução biológica, usado para estabelecer as relações filogenéticas entre organismos. Isto ocorre porque tal molécula:
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Respostas
381: D
382: B
383: D
384: B
385: A
386: E
387: D
388: C
389: C
390: B
391: C
392: B
393: C
394: E
395: B
396: D
397: E
398: C
399: B
400: D