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Q3263848 Técnicas em Laboratório
Durante uma pesquisa avançada sobre a estabilidade estrutural do DNA, uma equipe de bioquímicos decidiu investigar o papel de diferentes íons metálicos na estabilização das estruturas de dupla hélice de DNA. Esses bioquímicos prepararam amostras de DNA e as incubaram com diferentes concentrações de íons Mg2+, K+ e Na+. Após vários testes de calorimetria diferencial de varredura (DSC), observaram que a temperatura de fusão (Tm) do DNA variava de acordo com a concentração dos íons metálicos presentes.
Com base nos dados obtidos, os pesquisadores concluíram que a presença de íons Mg2+ aumentava significativamente a Tm do DNA em comparação aos íons K+ e Na+. No entanto, ao substituir todos os íons metálicos por um agente quelante que sequestra especificamente os íons Mg2+, K+ e Na+, a Tm do DNA caiu drasticamente.
Considerando o papel dos íons metálicos na estabilização da estrutura do DNA, qual das seguintes alternativas explica corretamente o mecanismo pelo qual os íons Mg2+ afetam a estabilidade do DNA?
Alternativas
Q3263847 Inglês
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         The correction of genetic errors associated with disease in animals suggests that gene editing has potential applications in gene therapy for humans. Gene therapy is the introduction of a normal gene into an individual’s genome in order to repair a mutation that causes a genetic disease. When a normal gene is inserted into a mutant nucleus, it most likely will integrate into a chromosomal site different from the defective allele. Although this may repair the mutation, a new mutation may result if the normal gene integrates into another functional gene. If the normal gene replaces the mutant allele, there is a chance that the transformed cells will proliferate and produce enough normal gene product for the entire body to be restored to the undiseased phenotype.

(www.britannica.com/science/genetic-engineering/ Process-and-techniques. Adaptado)
According to the text, gene therapy intends to
Alternativas
Q3263846 Inglês
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         The correction of genetic errors associated with disease in animals suggests that gene editing has potential applications in gene therapy for humans. Gene therapy is the introduction of a normal gene into an individual’s genome in order to repair a mutation that causes a genetic disease. When a normal gene is inserted into a mutant nucleus, it most likely will integrate into a chromosomal site different from the defective allele. Although this may repair the mutation, a new mutation may result if the normal gene integrates into another functional gene. If the normal gene replaces the mutant allele, there is a chance that the transformed cells will proliferate and produce enough normal gene product for the entire body to be restored to the undiseased phenotype.

(www.britannica.com/science/genetic-engineering/ Process-and-techniques. Adaptado)
No trecho do texto – it most likely will integrate into a chromosomal site different from the defective allele – o termo em negrito indica 
Alternativas
Q3263845 Inglês
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         The correction of genetic errors associated with disease in animals suggests that gene editing has potential applications in gene therapy for humans. Gene therapy is the introduction of a normal gene into an individual’s genome in order to repair a mutation that causes a genetic disease. When a normal gene is inserted into a mutant nucleus, it most likely will integrate into a chromosomal site different from the defective allele. Although this may repair the mutation, a new mutation may result if the normal gene integrates into another functional gene. If the normal gene replaces the mutant allele, there is a chance that the transformed cells will proliferate and produce enough normal gene product for the entire body to be restored to the undiseased phenotype.

(www.britannica.com/science/genetic-engineering/ Process-and-techniques. Adaptado)
The part of the text that indicates that an unwanted problem may happen is: 
Alternativas
Q3263844 Inglês
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        Cell culture experiments are widely used in biomedical research, regenerative medicine, and biotechnological production. Due to restrictions on the use of laboratory animals by animal protection laws and the strict implementation of the 3Rs (Replacement, Reduction, and Refinement) formulated by William Russell and Rex Burch to improve the welfare of animals, it can be expected that the general use of cell lines will further increase during the next years to substitute animal-based research. However, it should be noted that cell culture experiments, if not properly conducted, are prone to errors. Therefore, it is essential that cell culture studies are performed with good cell culture practice (GCCP) to assure the reproducibility of in vitro experimentation.

        In particular, inter- and intra-specific cross-contamination and cell misidentification, genetic drift, contamination with bacteria, fungi, yeast, viruses, or chemicals, and lack of quality control testing are widespread fatal cell culture problems that contaminate the literature with false and irreproducible results. Rough estimates suggest that the number of published papers that used problematic cell lines is about 16.1%. Moreover, the International Cell Line Authentication Committee (ICLAC) lists 576 misidentified or cross-contaminated cell lines in its latest register released in June 2021.

(Weiskirchen S, Schröder SK, Buhl EM, Weiskirchen R. A Beginner’s
Guide to Cell Culture: Practical Advice for Preventing Needless Problems.
Cells. 2023 Feb 21;12(5):682. doi: 10.3390/cells12050682.
PMID: 36899818; PMCID: PMC10000895.
www.ncbi.nlm.nih.gov/pmc/articles/PMC10000895/. Adaptado)
De acordo com o texto, é fundamental que experimentos com culturas de células in vitro
Alternativas
Q3263843 Inglês
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        Cell culture experiments are widely used in biomedical research, regenerative medicine, and biotechnological production. Due to restrictions on the use of laboratory animals by animal protection laws and the strict implementation of the 3Rs (Replacement, Reduction, and Refinement) formulated by William Russell and Rex Burch to improve the welfare of animals, it can be expected that the general use of cell lines will further increase during the next years to substitute animal-based research. However, it should be noted that cell culture experiments, if not properly conducted, are prone to errors. Therefore, it is essential that cell culture studies are performed with good cell culture practice (GCCP) to assure the reproducibility of in vitro experimentation.

        In particular, inter- and intra-specific cross-contamination and cell misidentification, genetic drift, contamination with bacteria, fungi, yeast, viruses, or chemicals, and lack of quality control testing are widespread fatal cell culture problems that contaminate the literature with false and irreproducible results. Rough estimates suggest that the number of published papers that used problematic cell lines is about 16.1%. Moreover, the International Cell Line Authentication Committee (ICLAC) lists 576 misidentified or cross-contaminated cell lines in its latest register released in June 2021.

(Weiskirchen S, Schröder SK, Buhl EM, Weiskirchen R. A Beginner’s
Guide to Cell Culture: Practical Advice for Preventing Needless Problems.
Cells. 2023 Feb 21;12(5):682. doi: 10.3390/cells12050682.
PMID: 36899818; PMCID: PMC10000895.
www.ncbi.nlm.nih.gov/pmc/articles/PMC10000895/. Adaptado)
According to the second paragraph, an example of contaminant that may be present during in vitro cell culture is:
Alternativas
Q3263842 Inglês
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        Cell culture experiments are widely used in biomedical research, regenerative medicine, and biotechnological production. Due to restrictions on the use of laboratory animals by animal protection laws and the strict implementation of the 3Rs (Replacement, Reduction, and Refinement) formulated by William Russell and Rex Burch to improve the welfare of animals, it can be expected that the general use of cell lines will further increase during the next years to substitute animal-based research. However, it should be noted that cell culture experiments, if not properly conducted, are prone to errors. Therefore, it is essential that cell culture studies are performed with good cell culture practice (GCCP) to assure the reproducibility of in vitro experimentation.

        In particular, inter- and intra-specific cross-contamination and cell misidentification, genetic drift, contamination with bacteria, fungi, yeast, viruses, or chemicals, and lack of quality control testing are widespread fatal cell culture problems that contaminate the literature with false and irreproducible results. Rough estimates suggest that the number of published papers that used problematic cell lines is about 16.1%. Moreover, the International Cell Line Authentication Committee (ICLAC) lists 576 misidentified or cross-contaminated cell lines in its latest register released in June 2021.

(Weiskirchen S, Schröder SK, Buhl EM, Weiskirchen R. A Beginner’s
Guide to Cell Culture: Practical Advice for Preventing Needless Problems.
Cells. 2023 Feb 21;12(5):682. doi: 10.3390/cells12050682.
PMID: 36899818; PMCID: PMC10000895.
www.ncbi.nlm.nih.gov/pmc/articles/PMC10000895/. Adaptado)
O trecho em negrito do primeiro parágrafo – cell culture experiments, if not properly conducted, are prone to errors – apresenta, no contexto, uma
Alternativas
Q3263841 Inglês
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        Cell culture experiments are widely used in biomedical research, regenerative medicine, and biotechnological production. Due to restrictions on the use of laboratory animals by animal protection laws and the strict implementation of the 3Rs (Replacement, Reduction, and Refinement) formulated by William Russell and Rex Burch to improve the welfare of animals, it can be expected that the general use of cell lines will further increase during the next years to substitute animal-based research. However, it should be noted that cell culture experiments, if not properly conducted, are prone to errors. Therefore, it is essential that cell culture studies are performed with good cell culture practice (GCCP) to assure the reproducibility of in vitro experimentation.

        In particular, inter- and intra-specific cross-contamination and cell misidentification, genetic drift, contamination with bacteria, fungi, yeast, viruses, or chemicals, and lack of quality control testing are widespread fatal cell culture problems that contaminate the literature with false and irreproducible results. Rough estimates suggest that the number of published papers that used problematic cell lines is about 16.1%. Moreover, the International Cell Line Authentication Committee (ICLAC) lists 576 misidentified or cross-contaminated cell lines in its latest register released in June 2021.

(Weiskirchen S, Schröder SK, Buhl EM, Weiskirchen R. A Beginner’s
Guide to Cell Culture: Practical Advice for Preventing Needless Problems.
Cells. 2023 Feb 21;12(5):682. doi: 10.3390/cells12050682.
PMID: 36899818; PMCID: PMC10000895.
www.ncbi.nlm.nih.gov/pmc/articles/PMC10000895/. Adaptado)
No trecho do primeiro parágrafo – However, it should be noted that cell culture experiments – o termo em negrito pode ser substituído, sem alteração de sentido, por 
Alternativas
Q3263840 Inglês
Leia o texto para responder à questão.

        Cell culture experiments are widely used in biomedical research, regenerative medicine, and biotechnological production. Due to restrictions on the use of laboratory animals by animal protection laws and the strict implementation of the 3Rs (Replacement, Reduction, and Refinement) formulated by William Russell and Rex Burch to improve the welfare of animals, it can be expected that the general use of cell lines will further increase during the next years to substitute animal-based research. However, it should be noted that cell culture experiments, if not properly conducted, are prone to errors. Therefore, it is essential that cell culture studies are performed with good cell culture practice (GCCP) to assure the reproducibility of in vitro experimentation.

        In particular, inter- and intra-specific cross-contamination and cell misidentification, genetic drift, contamination with bacteria, fungi, yeast, viruses, or chemicals, and lack of quality control testing are widespread fatal cell culture problems that contaminate the literature with false and irreproducible results. Rough estimates suggest that the number of published papers that used problematic cell lines is about 16.1%. Moreover, the International Cell Line Authentication Committee (ICLAC) lists 576 misidentified or cross-contaminated cell lines in its latest register released in June 2021.

(Weiskirchen S, Schröder SK, Buhl EM, Weiskirchen R. A Beginner’s
Guide to Cell Culture: Practical Advice for Preventing Needless Problems.
Cells. 2023 Feb 21;12(5):682. doi: 10.3390/cells12050682.
PMID: 36899818; PMCID: PMC10000895.
www.ncbi.nlm.nih.gov/pmc/articles/PMC10000895/. Adaptado)
No trecho do primeiro parágrafo – Due to restrictions on the use of laboratory animals – a expressão em negrito introduz uma
Alternativas
Q3263839 Inglês
Leia o texto para responder à questão.

        Cell culture experiments are widely used in biomedical research, regenerative medicine, and biotechnological production. Due to restrictions on the use of laboratory animals by animal protection laws and the strict implementation of the 3Rs (Replacement, Reduction, and Refinement) formulated by William Russell and Rex Burch to improve the welfare of animals, it can be expected that the general use of cell lines will further increase during the next years to substitute animal-based research. However, it should be noted that cell culture experiments, if not properly conducted, are prone to errors. Therefore, it is essential that cell culture studies are performed with good cell culture practice (GCCP) to assure the reproducibility of in vitro experimentation.

        In particular, inter- and intra-specific cross-contamination and cell misidentification, genetic drift, contamination with bacteria, fungi, yeast, viruses, or chemicals, and lack of quality control testing are widespread fatal cell culture problems that contaminate the literature with false and irreproducible results. Rough estimates suggest that the number of published papers that used problematic cell lines is about 16.1%. Moreover, the International Cell Line Authentication Committee (ICLAC) lists 576 misidentified or cross-contaminated cell lines in its latest register released in June 2021.

(Weiskirchen S, Schröder SK, Buhl EM, Weiskirchen R. A Beginner’s
Guide to Cell Culture: Practical Advice for Preventing Needless Problems.
Cells. 2023 Feb 21;12(5):682. doi: 10.3390/cells12050682.
PMID: 36899818; PMCID: PMC10000895.
www.ncbi.nlm.nih.gov/pmc/articles/PMC10000895/. Adaptado)
According to what is stated in the first paragraph, William Russel and Rex Burch aimed at improving
Alternativas
Q3263838 Inglês
Leia o texto para responder à questão.

        Cell culture experiments are widely used in biomedical research, regenerative medicine, and biotechnological production. Due to restrictions on the use of laboratory animals by animal protection laws and the strict implementation of the 3Rs (Replacement, Reduction, and Refinement) formulated by William Russell and Rex Burch to improve the welfare of animals, it can be expected that the general use of cell lines will further increase during the next years to substitute animal-based research. However, it should be noted that cell culture experiments, if not properly conducted, are prone to errors. Therefore, it is essential that cell culture studies are performed with good cell culture practice (GCCP) to assure the reproducibility of in vitro experimentation.

        In particular, inter- and intra-specific cross-contamination and cell misidentification, genetic drift, contamination with bacteria, fungi, yeast, viruses, or chemicals, and lack of quality control testing are widespread fatal cell culture problems that contaminate the literature with false and irreproducible results. Rough estimates suggest that the number of published papers that used problematic cell lines is about 16.1%. Moreover, the International Cell Line Authentication Committee (ICLAC) lists 576 misidentified or cross-contaminated cell lines in its latest register released in June 2021.

(Weiskirchen S, Schröder SK, Buhl EM, Weiskirchen R. A Beginner’s
Guide to Cell Culture: Practical Advice for Preventing Needless Problems.
Cells. 2023 Feb 21;12(5):682. doi: 10.3390/cells12050682.
PMID: 36899818; PMCID: PMC10000895.
www.ncbi.nlm.nih.gov/pmc/articles/PMC10000895/. Adaptado)
The text is mainly about
Alternativas
Q3263817 Medicina Legal
De acordo com a legislação vigente sobre a doação voluntária de corpos para fins de estudo e pesquisa, assinale a alternativa correta.
Alternativas
Q3263816 Medicina
Quanto à anatomia, localização e relação com outras estruturas dos seios maxilares, assinale a alternativa correta.
Alternativas
Q3263815 Medicina
No estudo da anatomia humana da cabeça, face e pescoço, destaca-se o canal mandibular que se bifurca, dando origem aos canais: 
Alternativas
Q3263814 Medicina
No que tange ao estudo e anatomia da topografia dento alveolar da maxila, a tábua óssea vestibular se apresenta, em geral, mais espessa na região dos dentes:
Alternativas
Q3263813 Medicina
Na aula prática de anatomia humana de cabeça e pescoço para os alunos de medicina e odontologia, o responsável pelo laboratório separou os ossos do crânio e da face. Constituem-se em ossos do neurocrânio:
Alternativas
Q3263812 Medicina
O técnico responsável pelo laboratório de anatomia humana recebeu a solicitação de separar para aula de graduação os ossos ímpares da face, portanto, ele apresentou aos alunos os seguintes ossos:
Alternativas
Q3263811 Medicina Legal
Na técnica de formolização por injeção arterial, em geral, opta-se pela introdução da solução nas artérias 
Alternativas
Q3263810 Medicina Legal
Consoante legislação vigente, técnicas químicas de conservação do corpo têm como proposta também preparar o corpo humano para seu transporte além das fronteiras do local do óbito, seja por via aérea, terrestre e fluvial. Nesse sentido, assinale a alternativa correta.
Alternativas
Q3263809 Medicina Legal
A solução de peróxido de hidrogênio é, geralmente, utilizada na preparação e limpeza de peças ósseas com a finalidade de estudo acadêmico e tem como função principal
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Respostas
5101: C
5102: E
5103: A
5104: C
5105: D
5106: B
5107: C
5108: E
5109: A
5110: B
5111: D
5112: E
5113: A
5114: C
5115: A
5116: E
5117: B
5118: C
5119: D
5120: E