Which of the following is the best definition of a chromosome?

A. The basic unit of a nucleic acid

B. A section of DNA that codes for traits

c. A combination of DNA and proteins in the cell nucleus

D. A physical or behavioral characteristic

option C

Explanation:

Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

Option C). A combination of DNA and proteins in the cell nucleus

Explanation:

A chromosome is a structure in the cell nucleus that contains DNA, histone protein, and other structural proteins.

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

answer: i don't know

explanation:

you need to provide a picture, otherwise i can't tell you.

if you can provide one, i'd be more than happy to you with this!