Besides reproduction, why do cells divide in other animals?

A) Centromere

B) Growth

C) Diploid

D) Reproduction

B) Growth

Explanation:

Choice A): This is wrong because the centromere is simply a part of a chromosome, i.e. the part of a chromosome consisting of two sister chromatids where the sister chromatids are the most tightly bound together.

Choice B): This is right because this is indeed one of the major reasons mitosis, or cell division takes place. For example, as a human grows, his or her cells must constantly divide for the human to grow; the cells themselves do not grow larger.

Choice C): This is wrong because this is simply a description for the number of chromosomes within a particular cell. This type of cell is a somatic, or body, cell, just any regular cell you would find in an organism.

Choice D): Well, you said besides reproduction, so I didn't choose this. Just in case, cells divide for reproduction purposes because of meiosis, where the gametes (sex cells) are produced.

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