Chapter 4

Question 1

deoxyribonuclei acid, a molecule that is present in all living cells and that contains the information that determines the traits that a living thing inherits and needs to live.

Answer 1

DNA

Question 2

In a Nucleic-acid chain, a sub unit that consists of a sugar, a phosphate, and a nitrogenous base

Answer 2

Nucleotide

Question 3

Ribonucleic acid, a molecule that is present in all living cells and that plays a role in protein production

Answer 3

RNA

Question 4

A cell organelle composed of RNA and protein; the site of protein synthesis

Answer 4

ribosome

Question 5

change in the nucleotide-base sequence of a gene or DNA molecule

Answer 5

Mutation