The main characteristic that distinguishes a eukaryotic cell from a prokaryotic cell is a cell wall.
Indicate whether the statement is true or false.
Ans: False.
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Which of the following is not true of mitotic cell division?
A. It occurs in eukaryotes, but not in prokaryotes. B. It is a highly regulated process. C. It is a form of asexual reproduction. D. It is a process that is very important in the life cycle of sexually reproducing organisms. E. It does not require DNA replication.
Why is it not surprising that AIDS patients frequently suffer a viral-induced tumor?
A. HIV genomes integrate into the host cell chromosome. This integration might result in loss of control of the cell cycle (also known as cancer). B. The immune system's CD4+ T cells are directly responsible for elimination of tumor cells. HIV attacks them and eliminates them, making a person more susceptible to cancer. C. The therapies for HIV are highly mutagenic, which may lead to cancerous states in people taking the drug regimen. D. Products of an active HIV infection are highly mutagenic-so, as a person's illness progresses, these mutagenic compounds build up and are more capable of inducing a cancerous state.
The theory that eating is controlled by deviations from a hypothetical blood glucose set point
What will be an ideal response?
The tortoiseshell pattern on a cat
A) usually occurs in males. B) is the result of a homozygous recessive condition. C) results from X chromosome inactivation. D) is a result of alleles on the Y chromosome.