Exam 1 Obj & SG (pt1)

Question 1

What are the building blocks of proteins?

Answer 1

AA’s

Question 2

What determines the function of Amino Acids?

Answer 2

Side chain and chemical properties (R-group)

Question 3

What are the 4 R-groups of Amino Acids?

Answer 3

Hydrophobic, hydrophilic, charged, and special

Question 4

What is the basic structure of Amino Acids?

Answer 4

Amino group, Carboxylic acid group, hydrogen atom, and central carbon

Question 5

At physiologic pH, the charged groups of amino acids are _____

Answer 5

Water soluble

Question 6

These amino acids prefer to be inside a folded protein or covered by another part of a protein or a lipid membrane where they are hidden from the external water environment.

Answer 6

Hydrophobic (Water Hating) R-groups

Question 7

These Amino Acids with partial charges from the hydroxyl (OH–) or amino (NH3+) parts of these R-groups, these amino acids prefer to be at or near the surface of a protein where they interact with surrounding water molecules and are often important at the active site of an enzyme.

Answer 7

Hydrophilic R-groups

Question 8

These Amino Acids are either positively or negatively charged, and prefer to be at the surface of a folded protein or in contact with other charged atoms/molecules.

Answer 8

Charged R-groups

Question 9

Which Amino Acids are often important at the active site of an enzyme?

Answer 9

Hyodrophilic R-groups

Question 10

How are peptide bonds linked to each other?

Answer 10

By the carboxyl group of one amnio acid, to the amino group of another amino acid.

Question 11

The precursors of the 20 amino acids found in humans are obtained from what?

Answer 11

carbohydrate metabolism

Question 12

What predicts the folding patterns, binding sites, and other interactions of peptide bonds?

Answer 12

The R-groups

Question 13

How is a primary peptide structure bonded?

Answer 13

Linked by peptide bond between amine and carboxylic acid

Question 14

What is the backbone of a primary structure?

Answer 14

Amine—α carbon—carbonyl—Amine—α carbon—carbonyl

Question 15

What forms a secondary structure?

Answer 15

Linear chain of amnio acids, in which the C-N and C-C bonds, rotate around the central carbon atom.

Question 16

Name this structure

Answer 16

Primary Structure

Question 17

Name this structure

Answer 17

a-helix

Question 18

Name this structure

Answer 18

B-strand (Parallel)

Question 19

Name this structure

Answer 19

B-strand (Antiparallel)

Question 20

Name this Structure

Answer 20

B-Turn