Download Molecules to metabolism (2.1)

Take Home Quiz on Molecules to metabolism (2.1)
Molecules to metabolism (2.1)
[16 marks]
1.
Which of the following reactions occurs when a dipeptide is formed from amino acids?
A.
Hydrolysis
B.
Oxidation
C.
Condensation
D.
Denaturation
(Total 1 mark)
2.
Which of the following statements is true about covalent bonds
A.
It is characteristic of all organic molecules.
B.
It only happens with carbon atoms.
C.
It is formed by the sharing of equal numbers of electrons by two atoms.
D.
It is formed by the exchange of equal numbers of electrons by two atoms.
(Total 1 mark)
3.
Which of the following is an organic compound found in both plant and animal cells?
A.
Pyruvate
B.
Carbon dioxide
C.
Water
D.
Cellulose
(Total 1 mark)
4.
Which molecule is shown below?
A.
Glucose
B.
Galactose
C.
Ribose
D.
Sucrose
(Total 1 mark)
Take Home Quiz on Molecules to metabolism (2.1)
5.
Which describes these molecules correctly?
I
II
A.
ribose
amino acid
B.
glucose
amino acid
C.
ribose
fatty acid
D.
glucose
fatty acid
(Total 1 mark)
6.
Which of the following substances are organic?
I. Phospholipids
II. Oxygen
III. Carbon dioxide
A.
II and III only
B.
I only
C.
I and II only
D.
I, II and III
(Total 1 mark)
Take Home Quiz on Molecules to metabolism (2.1)
7.
How many molecules of water are required to completely hydrolyse a polypeptide made up of 23
amino acids?
A.
11
B.
22
C.
23
D.
44
(Total 1 mark)
8.
An enzyme is a biological catalyst, define the term catalyst.
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(1)
9.
Compare and contrast the structure of a triglyceride and a phospholipid.
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(3)
10.
Anabolism is an important process in cells. Outline the process of anabolism with reference to an
example.
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(6)