Download PDF

Biochem revision questions
1.
The percentage of thymine in the DNA of an
organism is approximately 30%. What is the
percentage of guanine?
A
2.
3.
4.
5.
B
30%
C
40%
D
20%
9.
A
Chlorophyll
B
Carbon dioxide only
C
Water only
D
Both water and carbon dioxide
What property of water makes it a good evaporative
coolant?
A
High latent heat of evaporation
B
Relatively low boiling point
C
Volatility
D
Transparency
10.
Which process produces the most ATP per molecule
of glucose?
A
Anaerobic respiration in a yeast cell
B
Aerobic respiration in a bacterial cell
C
Glycolysis in a human liver cell
D
The formation of lactic acid in a human
muscle cell
Blue B
Gree C
n
Whit D
e
B
22
C
23
D
13.
Red
How many molecules of water are required to
completely hydrolyse a polypeptide made up of 23
amino acids?
11
11.
12.
Which type of light is least useful for photosynthesis
in terrestrial plants?
A
7.
70%
8.
What is the source of the oxygen released into the
air as a product of photosynthesis?
A
6.
Name:
14.
Where is chlorophyll found in a plant cell?
A
Thylakoid membranes
B
Stroma
C
Matrix
D
Cristae
What is produced by the light-dependent reactions
of photosynthesis and used in the Calvin cycle?
A
Hydrogen and oxygen
B
ATP and NADPH
C
NADPH and oxygen
D
ATP and CO2
Where does the RNA polymerase bind during the
process of transcription?
A
The polysome
C
The promoter
B
The operator
D
The initiator
Which substance in prokaryotes contains sulfur?
A
DNA
C
Proteins
B
Phospholipids
D
Antibiotics
What is removed during the formation of mature
RNA in eukaryotes?
A
Exons
C
Codons
B
Introns
D
Nucleosomes
Which of these molecules is a disaccharide?
A
Galactose
C
Cellulose
B
Sucrose
D
Ribose
Blood is a water-based transport medium. Which
property of water makes it a good transport
medium?
44
A
High specific heat
What does a nucleosome consist of ?
B
Transparency
A
DNA and histones
C
Versatility as a solvent
B
DNA and chromatin
D
It has its greatest density at 4°C
C
Chromatin and nucleotides
D
Mature RNA and histones
wordwall.co.uk / play / 45671