Question

1. at first, interphase was called the “resting phase” of the cell cycle. what did scientists learn about interphase as new techniques and tools to study cells were developed? 4) examine figure 4 and the information on page 224. a. circle the best choice within the parenthesis to complete the statement: cells that divide more frequently have a cell cycle that is (shorter / the same length / longer) than cells that divide less frequently. b. why do skin cells divide more frequently than liver cells?

Explanation:

1. With new techniques, scientists found interphase is not a resting phase. It is a highly active period where the cell grows, replicates DNA, and prepares for cell - division.

4.a. Cells that divide more frequently have a shorter cell - cycle as they need to produce new cells more quickly.
4.b. Skin cells divide more frequently than liver cells because the skin is constantly exposed to damage and wear - and - tear. It needs to replace dead and damaged cells more often to maintain its protective function. Liver cells have a more stable environment and do not need as frequent replacement.

Answer:

1. Interphase is a highly active phase of cell - growth, DNA replication, and preparation for cell - division.

4.a. shorter
4.b. Skin is exposed to more damage and needs to replace cells more often for protection.