Ap bio

Based on figure 1 what percent of the time required to complete a full cycle do the cells typically spend in interphase

95%

Cancer can result from a variety of different mutational event which of the following is least likely to result in the initiation of a cancerous tumor

A defect in a cell cycle checkpoint prevents a cell from entering the S phase

Which of the following presents a correct interpretation of the changes in chromosome number depicted in figure 1

Chromosomes enter metaphase containing two chromatids attached by a centromere. During anaphase, the chromatids are separated, each becoming a chromosome. Cytokinesis distributes the chromosomes into two separate cells.

Both mitosis and meiosis begin with a parent cell that is diploid which of the following best describes how mitosis and meiosis resulting daughter cells with different numbers of chromosomes

Mitosis produces two identical diploid daughter cells after one round of division meiosis produces for haploid daughter cells after two rounds of division

In order for the human diploid number of 46 to be maintained throughout generations which of the following must occur

Sister chromatids are formed prior to mitosis and meiosis

Cancer is not a contagious disease instead it is an error in cellular regulation which of the following explains why cancer can spread so quickly throughout a living organism

Some cancer cells can produce their own growth factor to pass cell cycle checkpoints

What is the most logical explanation for the isolation in the expression of the unique cycling at designated points in the cycle

The availability of the specific cycling how the timing of each step of the cell cycle is regulated

Based on the model of eukaryotic cell cycle regulation shown in the figure which of the following best describes the effect of a drug that blocks the production of the mitotic cyclin

The cell would be prevented from entering mitosis, and the cell would stop dividing.

Which of the following occurs during mitosis but not during meiosis

The chromatids of each chromosome are separated

What are the following best describes the cells that result from the process of meiosis in mammals

They are genetically different from the parent cell