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Proteins F23 Bio101

Total questions: 28

Worksheet time: 15mins

Name
Class
Date
1.

What is this molecule called?

a)

nucleotide

b)

fatty acid

c)

amino acid

d)

monosaccharide

e)

glycerol

2.

Which colored box highlights the amino group?

a)

Blue (left)

b)

Turquoise (top)

c)

Orange

d)

Red

e)

Purple

3.

Which colored box is different for every amino acid?

a)

Blue (left)

b)

Turquoise (top)

c)

Orange

d)

Red

e)

Purple

4.

Which colored box is the reason this is an organic molecule?

a)

Blue (left)

b)

Turquoise (top)

c)

Orange

d)

Red

e)

Violet

5.

Which colored box highlights the carboxyl?

a)

Blue (left)

b)

Turquoise (top)

c)

Orange

d)

Red

e)

Purple

6.

What is a long chain of amino acids called?

a)

Polysaccharide

b)

Lipid

c)

Carbohydrate

d)

Polypeptide

e)

Nucleic acid

7.

Two amino acids will bond together as the result of _______.

a)

Dehydration synthesis

b)

Hydrolysis

c)

pHolysis

d)

Rehydration synthesis

8.
What is a peptide bond?
a)
Bond that holds two amino acids together.
b)
A bond that holds hydrogen and oxygen molecules together.
c)
A bond that holds the phosphate group of one nucleotide and a sugar of a neighboring nucleotide.
d)
A bond that is formed by the sharing of electrons.
9.
How many different amino acids are there?
a)
15
b)
20
c)
25
d)
30
10.
The diagram shows the structure of an amino acid. Which type of molecule is formed from amino acids?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
11.
What is a protein: 
a)
A polymer composed of many sugars.
b)
A polymer composed of many amino acids. 
c)
A polymer composed of fatty acids. 
d)
A polymer composed of nucleotides. 
12.
The structure of proteins can be changed by environmental factors such as temperature or pH.
a)
True
b)
False
13.
The diagram shows a bond forming between two amino acids. What is the name of this reaction?
a)
Dehydration Synthesis
b)
Hydrolysis
c)
Pepysis
d)
Oxidation
14.
Each amino acid is different from the other due to....
a)
The R group
b)
The amino group
c)
The carboxyl group
d)
The central carbon
15.
What elements make up amino acids?
a)
Carbon, hydrogen and oxygen only
b)
Carbon, hydrogen, oxygen and nitrogen only
c)
Carbon, hydrogen and phosphorus only
d)
Carbon, hydrogen, nitrogen and oxygen; and sometimes also sulfur
16.
The reaction used to digest and break the bond in red is:
a)
Hydrolysis
b)
Dehydration Synthesis
c)
Oxidation
d)
Single Displacement
17.
The primary sequence of a protein refers to the:
a)
Order of amino acids
b)
α-Helix or β-Pleated Sheet
c)
Interaction of subunits
d)
Hydrogen Bonding
18.
The sequence of amino acids is determined by:
a)
Genes
b)
Hydrogen Bonds
c)
Like Dissolves Like
d)
pH
19.

Alpha helix and beta sheet are examples of what type of protein structure?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

20.

Which protein structure describes a protein's three-dimensional shape?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

21.

Which protein structure is only found in proteins with more than one polypeptide chain?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

22.

Collagen and keratin are examples of what type of protein?

a)

Fibrous

b)

Globular

c)

Multifunctional

d)

Digestive enzymes

23.
Mutations affect the ________ of a protein. Because of this the proteins ______ is affected as well. 
a)
gene, function 
b)
sequence, gene
c)
shape,function
24.

How many subunits are present in hemoglobin?

a)

2

b)

4

c)

3

25.

  1. Which of the following is a characteristic of fibrous proteins?

a)

  1. a) They are soluble in water..

b)

  1. b) They have a compact, spherical structure.

c)

  1. c) They are typically involved in metabolic reactions.

d)

d) they have a high mechanical strength

26.

  1. Which of the following statements about globular proteins is true?

a)

  1. a) They have a fibrous, elongated structure.

b)

  1. b) They are insoluble in water.

c)

  1. c) They provide structural support to cells and tissues.

d)

  1. d) They have a compact, folded structure.

27.

  1. Which of the following is an example of a globular protein?

a)

keratin

b)

actin

c)

insulin

d)

elastin

28.

Which group of proteins do virtually all enzymes belong to?

a)

Globular

b)

Fibrous

c)

Structural

d)

Membrane

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