What factors may contribute to aging?
ca celis stop dividing after 50 divisions
b. cell...
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Health, 23.06.2019 03:30
If you or someone you know may have a mental disorder, it's important to discuss this concern with a trusted adult. t or f
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Health, 23.06.2019 04:00
Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.b) the viral genome codes for specialized enzymes not in the host.c) the virus infects only those cells and species that can perform all the replication roles necessary.d) viruses can stay in a quiescent state until the host cell evolves this ability.
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Health, 23.06.2019 15:10
Which is a physical sign of stress? a: unexplained euphoria b: feelings of invincibility c: inability to sleep d: visual hallucinations
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Health, 24.06.2019 01:00
Which describes a side effect? a. an unwanted physical or mental effect caused by a drug b. developing a chemical need for a drug c. the need for increasingly larger amounts of the drug d. the body’s reaction to not having the drug
Answers: 2
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