Chapter Nine (Sections 1-2) Flashcards
1
Q
DNA
A
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.
2
Q
Nucleotide
A
In a nucleic-acid chain, a subunit that consists of a sugar, a phosphate, and a nitrogenous base.
3
Q
RNA
A
A molecule that is present in all living cells and that plays a role in protein production.
4
Q
Ribosome
A
A cell organelle composed of RNA and protein; the site of protein synthesis.
5
Q
Mutation
A
A change in the nucleotide-base sequence of a gene or DNA molecule.
