Ch. 4 Genes and DNA Flashcards
1
Q
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
A
DNA
2
Q
in a nucleic-acid chain, a sub unit that consists of a sugar a phosphate, and a nitrogenous base
A
nucleotide
3
Q
a molecule that is present in all living cells and that plays a role in protein production
A
RNA
4
Q
a cell organelle composed of RNA and protein of RNA and protein; the site of protein synthesis
A
ribosome
5
Q
a change in the nucleotide-base sequence of a gene or DNA molecule
A
mutation
