Why does SV40 have a normal lytic viral cycle in monkey cells but in human cells it leads to transformation?
a) SV40 will only infect monkey cells, NOT human cells
b) Monkey cells involve completely different proteins for DNA replication and mitosis compared to human cells
c) The replicative viral proteins are fine-tuned to work with monkey proteins, and human proteins are different enough to reduce their function
d) Transformation represent the way human cells "fight back" against SV40
Answer: c) The replicative viral proteins are fine-tuned to work with monkey proteins, and human proteins are different enough to reduce their function
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(a) anus. (b) cloaca. (c) mouth. (d) excretory pore.
Development of an animal is connected to the genes that are expressed during development. What roles have been proposed for Hox genes in the evolution and morphology of animal species? Select all that apply.
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Arthropods having two pairs of antennae belong to the subphylum:
a. Chelicerata. b. Insecta. c. Crustacea. d. Pycnogonida. e. Cirrepedia.
Which of the following molecules is/are formed at the end of the electron transfer process?
a. ATP only b. NADPH only c. ATP and NADPH d. NADP+ e. ATP and NADP+