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Protein Structure and Folding

Total questions: 20

Worksheet time: 26mins

Name
Class
Date
1.

which of the following terms refers to the order in which amino acids are linked together in a protein.

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

2.

The chain of amino acids folds and coils on itself

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

3.

The entire polypeptide forms a three-dimensional structure

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

4.

Two or more polypeptides attached together and work as one unit

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

5.
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.
6.
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.
7.
How many different amino acids are there?
a)
15
b)
20
c)
25
d)
30
8.
What is the monomer of proteins?
a)
amino acids
b)
polypeptides
c)
nucleotides
d)
monosaccharides
9.

The diagram shows a bond forming between two amino acids. What is the name of this reaction?

a)

Condensation

b)

Hydrolysis

c)

Pepysis

d)

Oxidation

10.
Refers to the three-dimensional structure of an entire amino acid chain in a protein molecule
a)
tertiary structure
b)
primary structure
c)
secondary structure
d)
fibrous proteins
11.
What is the monomer of a protein?
a)
amino acid
b)
monosaccharide
c)
fatty acid
d)
nucleic acid
12.
The name of the initial chain of monomers in a protein is called.....
a)
polypeptide
b)
polysaccharide
c)
polyester
d)
polynucleotide
13.
The two types of folding in the secondary structure are.....
a)
alpha-helix & beta-pleated sheets
b)
polypeptide & nucleotide
c)
globular & fibrous
14.
The main bonding in the secondary structure of a protein is due to.....
a)
covalent bonding
b)
ionic bonding
c)
hydrogen bonding
d)
polar bonding
15.
The tertiary structure folding in proteins is primary due to the interactions of....
a)
the 'R' groups
b)
the 'P' groups
c)
the 'A' groups
d)
the 'S'
16.
What is the name of this molecule?
a)
amino acid
b)
nucleotide
c)
monosaccharide
d)
triglyceride
17.
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
18.
The bond between two amino acids is called...
a)
Peptide bond
b)
Amino acid bond
c)
Nothing. There isn't a name for it
d)
Hydrogen bond
19.
Water-repelling
a)
hydrophobic
b)
myoglobin
c)
coagulation
d)
gluten
20.

tick the correct box

a)

Secondary - silk, Tertiary - enzymes, Quaternary - haemoglobin

b)

Secondary - haemoglobin, Tertiary - enzymes, Quaternary - silk

c)

Secondary - Enzymes Tertiary - haemoglobin, Quaternary - silk

d)

Secondary - Silk, Tertiary - haemoglobin, Quaternary - enzymes

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