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Course: AQA A Level Biology 7402
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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

3.3.5 Modelling Absorption – Unit exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
Which row of the enzyme table is correct?
Row 3
Row 1
Row 2
Row 4
2.
Why do red blood cells lack a nucleus?
To divide faster
To make antibodies
To store glucose
To hold more haemoglobin
3.
Mass of a potted plant was recorded under different conditions. Under which condition was transpiration fastest?
Still and cool
Still and warm
Windy and warm
Humid and still
4.
Which statement best describes Surface area to volume ratio?
Mitochondria and chloroplasts were once free-living bacteria engulfed by a larger cell.
Cell with a true nucleus and membrane-bound organelles.
Falls as a cell grows — the reason cells stay small.
Everything between the membrane and the nucleus — cytosol plus organelles.
5.
Which statement best describes Surfactant?
Substance that lowers surface tension in alveoli preventing collapse.
Blood and water flow in opposite directions, maintaining a concentration gradient.
Opening on an insect's body surface leading to the tracheae.
Pores on leaves that allow gas exchange, controlled by guard cells.
6.
Tissue fluid is forced out at the arterial end by:
Oncotic pressure
Hydrostatic pressure
Osmosis
Active transport
7.
As a spherical cell grows larger, its surface-area-to-volume ratio
decreases
increases
stays the same
first decreases then increases
8.
A vaccine usually contains
antibiotics
dead or weakened pathogens or their antigens
antibodies from another person only
white blood cells
9.
A potometer measures:
Photosynthesis
Water uptake
Sugar transport
Stomatal density
10.

Most tissue fluid returns to the blood at the venous end of the capillary because

the water potential of the blood is lower than that of the tissue fluid and hydrostatic pressure has fallen
hydrostatic pressure is higher there
it is pumped
lymph pushes it
11.
Using the table, what is the percentage change in mass at 0.0 mol/dm³?
+30%
−15%
+15%
+2.3%
12.
Deciduous trees dropping leaves in autumn helps them avoid water loss in winter. True or false?
False
False, it increases water loss
True
True only in deserts
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Part of 3. Exchange and Transport — see every lesson and quiz in this unit.
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