Question

Why do some cells divide fast, and others slow? Now that you have had a chance to think about it, why might some of these cell types divide more rapidly, and others more slowly?

We think some cells divide more rapidly because...

a) They have more DNA.
b) They are under less stress.
c) They have shorter lifespans.
d) They have a higher metabolic rate.

We think other cells divide more slowly because...

a) They have less energy.
b) They are more specialized.
c) They have longer lifespans.
d) They have a lower metabolic rate.

Answer 1

Cells divide at different rates due to factors like metabolic rate and lifespan. Epithelial cells divide frequently, while specialized cells divide more slowly.

Step-by-step explanation:

Cells divide at different rates due to various factors. Some cells divide more rapidly because they have a higher metabolic rate and shorter lifespans. For example, epithelial cells divide frequently to replace those that rub off the surface. On the other hand, some cells divide more slowly because they are more specialized and have longer lifespans. Nerve cells, skeletal muscle fibers, and cardiac muscle cells are examples of cells that do not divide.