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Biochemistry Review #2

Total questions: 27

Worksheet time: 14mins

Name
Class
Date
1.
The phospholipid bilayer comprises what part of the cell?
a)
cytoplasm
b)
cell membrane
c)
cytoskeleton
d)
nuclear membrane
2.
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
3.
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
4.
Identify the element found in a protein that is not present in a carbohydrate
a)
Carbon
b)
Oxygen
c)
Hydrogen
d)
Nitrogen
5.
Saturated fats are _____ at room temperature.
a)
solids
b)
gases
c)
liquids
d)
non of the above
6.
Which of the following foods contains unsaturated fats?
a)
fish
b)
olive oil
c)
cheese
d)
eggs
7.

Monomers are....

a)

the smaller building blocks for biomolecules

b)

the complex components for biomolecules

c)

the finalizing step to building biomolecules

8.
In the phospholipid, the polar head is considered what type of structure?
a)
hydrophobic
b)
insoluble
c)
hydrophilic
9.
Unsaturated fats have _______________
a)
bent structure
b)
double bonds
c)
liqudity at room temperature
d)
all of the above
10.
All polymers are made up of...
a)
monosaccharides
b)
monomers
c)
proteins
d)
None of these
11.
Building blocks of the body, hair , muscles etc.
a)
protein
b)
nucleic acid
c)
lipids
d)
carbohydrates
12.

Carbohydrates are also known as

a)

Sugars

b)

Fats

c)

Acids

d)

Bases

13.

The repeating units of protein are

a)

Amino acids

b)

Glucose

c)

Fatty acid

d)

Peptides

14.

Which of the following describes the secondary structure of proteins?

a)

The sequence of amino acids

b)

The α-helix and β-pleated sheet folding

c)

The folding of the polypeptide chain due to the 'R' groups

d)

The joining of different protein molecules to make one big molecule

15.

Why is folding so important in proteins?

a)

It gives them a unique, functional shape

b)

It makes them look tidier

c)

It makes every protein molecule different from the next even if they are the same type

d)

The folding is random so is not that important at all

16.

What happens to an enzyme when it is heated to above its optimum temperature?

a)

Dies

b)

Deforms

c)

Denatures

d)

Decomposes

17.

Which protein structure describes the sequence of amino acids?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

18.

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

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

19.

The difference between tertiary and quartenary structure is:

a)

Tertiary structure has double bond whereas quartenary structure does not have double bond

b)

Tertiary structure consists of one polypeptide chain whereas quartenary structure consists of more than one polypeptide chains

c)

Tertiary structure is fibrous whereas quartenary structure is globular

d)

Tertiary structure is water-soluble whereas quartenary structure is lipid soluble

20.
Connects monomers to form a polymer
a)
Dehydration synthesis
b)
hydrolysis
21.
Produces water as a by-product
a)
Dehydration synthesis
b)
Hydolysis
22.
Breaks up polymers, forming monomers
a)
dehydration synthesis
b)
hydrolysis
23.
Water is used to break bonds between polymers
a)
dehydration synthesis
b)
Hydrolysis
24.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis
25.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis
26.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis
27.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis