Chapter 3

Question 1

Four types of biological macromolecules

Answer 1

Proteins, carbohydrates, nucleic acids, lipids

Question 2

Proteins

Answer 2

Most complex out of all macromolecules. Have different functions. Heteropolymeres of alpha-amino acids.

Catalytic
Transport
Structure
Motion

Question 3

Amino acids most suitable to carry out a variety of biological functions because:

Answer 3

Capacity to polymerize
Can be an acid or a bad
Varied physical properties (20 basic AA)
Varied chemical functionality

Question 4

Amino acids consist of

Answer 4

Alpha-carbon center, Carboxyl group (coo-), hydrogen (alpha-H) amino group (H3N+), R group. At physiological ph= 7.4. tetrahedral.

Amino group can be protonated (H3N+) or deprotonated (NH2)

Carboxyl group can be protonated (COOH) or deprotonated (COO-)