Chapter 4: Translation and Protein Structure

Question 1

Protein functions

Answer 1

regulatory, structural, protective roles; work for the cell, enzymes

Question 2

Fibrous

Answer 2

parallel polypeptide chains

Question 3

Globular

Answer 3

folded into a 3D spherical shape

Question 4

Chiral

Answer 4

sign of biological life; if mirror image is not the same

Question 5

How are the 20 common Amino acids arranged on the chart

Answer 5

By how they interact with water, basic or acidic, polar or non polar

Question 6

Charged AA

Answer 6

Basic take a proton+

Acidic give away proton -

Question 7

Glycine

Answer 7

nonchiral, nonpolar, and flexible

Question 8

Proline

Answer 8

ring structure, puts constraints on protein folding and makes kinks

Question 9

Cystone

Answer 9

Contains an SH group, can form a disulfide bond/ bridge can add or release two hydrogen ions

Question 10

What type of bond links together AAs

Answer 10

peptide bonds (covalent)

Question 11

How does a peptide bond form?

Answer 11

Carboxyl group of one AA bonds to Amino group of another AA; releases a water molecule

Question 12

Primary Structure

Answer 12

sequence of AAs