Hello, dear friend, you can consult us at any time if you have any questions, add WeChat: daixieit

Chapter 15 & 16 Quiz: CHEM 202, Summer WORLD

Question 1

Classify the following amino acid.

acidic

basic

neutral

Question 2

Classify the following amino acid.

acidic

basic

neutral

Question 3

Which amino acid has a five membered ring?

Proline

Cystine

Glycine

Lysine

Question 4

What is the charge on arginine at pH = 10.76?

­1

0

+1

+2

Question 5

What is the charge on alanine at pH = 6.01?

­2

­1

0

+1

Question 6

Is the following amino acid R or S?

R

S

Question 7

A peptide bond is a link between what groups on the amino acids?

amino group of one to the carbonyl group of another

amino group of one to the amino group of another

carbonyl group of one to the carbonyl group of another

amino group of one to the carbonyl of the same acid

Question 8

What level of protein interaction is described by the sequence of amino acids?

primary

secondary

tertiary

quaternary

Question 9

Which of the following is an example of an unsaturated fatty acid?

Linolenic

Arachidic

Lauric

Myrisitc

Question 10

What fat has 16 carbons and is fully saturated?

Lauric acid

Oleic acid

Stearic acid

Palmitic acid

Question 11

What fat has 18 carbons and is fully saturated?

Myristic acid

Arachidic acid

Stearic acid

Palmitic acid

Question 12

which of the following has the lowest percent of linoleic acid?

corn oil

human fat

whale blubber

coconut oil

Question 13

Which of the following has the highest percent of unsaturated fat?

olive oil

peanut oil

lard

coconut oil

Question 14

Phospholipids make about about what percentage of cell membranes?

10­20

30­40

50­60

70­80

Question 15

Approximately how thick is the lipid bilayer of cell membranes?

0.25 nm

5.0 nm

0.75 nm

1.0 nm

Question 16

Classify the molecule below.

Purine

Pyrimidine

Question 17

Which of the following steps describes the process in which the DNA copies are made?

replication

transcription

translation

translocation

Question 18

Which step in protein synthesis involves the unwinding of the DNA helix and production of two new strands?

replication

transcription

translation

translocation

Question 19

How would you classify a molecule with the following chemical formula?

C12H24O2

protein/amino acid

carbohydrate

fat

nucleic acid

Question 20

How would you classify a molecule with the following chemical formula?

C16H30O2

protein/amino acid

carbohydrate

fat

nucleic acid