Curriculum
Course: AQA A Level Biology 7402
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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

6.4.1 Principles of Homeostasis – Unit exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
Which key term matches this description: "Lack of a mineral causes symptoms."
Which key term matches this description: "Lack of a mineral causes symptoms."
Nitrates
Fertiliser
Deficiency
Mineral ions
2.
How is stimulus intensity coded?
Size of action potential
Frequency of action potentials
Speed of conduction
Duration of refractory period
3.

When blood glucose concentration rises, the pancreas secretes

glucagon from α cells
insulin from α cells
insulin from β cells
adrenaline
4.
IGCSE Biology 14.3 Synapse - Question 10
IGCSE Biology 14.3 Synapse - Question 10
A
B
C
D
5.
IGCSE Biology 14.3 Synapse - Question 5
IGCSE Biology 14.3 Synapse - Question 5
A
B
C
D
6.
Using the table, which sample is skeletal muscle?
Sample 1
Sample 3
Sample 2
None
7.
According to the comparison table in this lesson, what is the Deficiency symptom of Nitrate?
According to the comparison table in this lesson, what is the Deficiency symptom of Nitrate?
Plant mineral requirements
Stunted growth, yellow older leaves
Yellow leaf edges
Yellow leaves (chlorosis)
Poor root growth
8.
Heart rate before and after a sudden fright is shown. Which hormone explains the change?
Insulin
Adrenaline
Oestrogen
Glucagon only
9.
Which drug action in the table prolongs the signal by keeping transmitter in the synapse?
Blocking receptors
Blocking reuptake
Reducing release
Destroying vesicles
10.
Which part of the retina contains the highest density of cones?
Blind spot
Fovea
Iris
Optic nerve
11.
The refractory period ensures that:
Impulses travel in one direction
Action potentials are larger
Myelin forms
Na+ channels stay open
12.
Estuary organisms must control water and salt balance, a process called _____.
chemosynthesis
photosynthesis
upwelling
osmoregulation
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Part of 6. Organisms Respond to Changes in their Environments (A Level only) — see every lesson and quiz in this unit.
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