Curriculum
Course: AQA A Level Biology 7402
Login

Curriculum

AQA A Level Biology 7402

1. Biological Molecules

0/102

2. Cell Structure

0/95

3. Exchange and Transport

0/98

4. Genetics, Variation and Interdependence

0/94

5. Energy Transfers In and Between Organisms (A Level only)

0/63

6. Organisms Respond to Changes in their Environments (A Level only)

0/93

7. Genetics, Populations, Evolution and Ecosystems (A Level only)

0/55

8. The Control of Gene Expression (A Level only)

0/72

9. Exam Guidance and Skills

0/38
Quiz

1.6.2 Hydrolysis and Synthesis of ATP – Unit exam questions

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 12
  • Passing grade: B+
Start Quiz
1.
Which statement best describes 70S ribosomes?
Which statement best describes 70S ribosomes?
Evidence of engulfment.
Organelles divide like bacteria.
Mitochondria and chloroplasts came from engulfed prokaryotes.
Prokaryote-type ribosomes in organelles.
2.
Meselson–Stahl results (heavy ¹⁵N DNA moved to ¹⁴N) are shown. Which model does generation 1 support?
Conservative replication
No replication
Semiconservative replication
Replication creating only heavy DNA
3.
IGCSE Biology 4.2 Dna Molecule - Question 3
IGCSE Biology 4.2 Dna Molecule - Question 3
A
B
C
D
4.
This process includes the reactions that use NADH and FADH2 to produce ATP.
This process includes the reactions that use NADH and FADH2 to produce ATP.
Glycolysis
Krebs cycle
Oxidative phosphorylation
Lactic acid fermentation
Chemiosmosis
5.
The diagram shows two replication models. Which model is semiconservative?
Dr Dabour Hub Academy - figure 1
Model 1
Model 2
Both models
Neither model
6.
Ribosomes are the site of
ATP production by oxidative phosphorylation
photosynthesis
protein synthesis
lipid synthesis
7.
A noncompetitive inhibitor:
binds the active site
is overcome by excess substrate
increases Vmax
binds an allosteric site and changes enzyme shape
8.
Why does a high temperature denature enzymes?
Peptide bonds are hydrolysed
Hydrogen and ionic bonds break, changing the active site
Substrate becomes too fast to bind
The enzyme evaporates
9.
fMRI detects brain activity by measuring:
X-ray absorption
Electrical impulses directly
Increased flow of oxygenated blood
Radioactive glucose only
10.
What happens to an enzyme above its optimum temperature?
It works faster forever
It becomes denatured
It changes substrate
It becomes a carbohydrate
11.
A cell has no nucleus, a single circular chromosome and 70S ribosomes. It is _____.
prokaryotic
a plant cell
a fungal cell
eukaryotic
12.
An enzyme cooled from 5 °C to 37 °C recovers its activity, but one cooled after boiling does not. True or false?
False
False, both recover
True
False, neither recovers
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
Part of 1. Biological Molecules — see every lesson and quiz in this unit.
Accepted payment methods