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

5.1.2 Required practical- Investigating Photosynthetic Pigments with Chromatogra – Unit exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
Which statement best describes Trophic level?
Which statement best describes Trophic level?
Position in a food chain.
Autotroph making organic molecules.
Total energy captured by producers.
Recycles nutrients from dead matter.
2.
Which statement best describes Light-dependent reactions?
A molecule that absorbs some wavelengths of light and reflects others.
The fluid around the thylakoids, where the Calvin cycle takes place.
In the thylakoid membrane: light splits water, releasing O₂ and making ATP and NADPH.
The main pigment; absorbs red and blue light and reflects green, which is why leaves look green.
3.
Dissolved oxygen was measured in a lake over the summer after fertiliser runoff. Which week shows the greatest fall in oxygen?
Week 0 to week 2
Week 2 to week 4
Week 4 to week 6
Week 6 to week 8
4.
Energy is also used to maintain a constant:
Eye colour
Height
Blood group
Body temperature
5.
Which statement best describes Denitrification?
A saprotrophic organism (bacterium or fungus) that breaks down dead organic matter, releasing inorganic nutrients.
Conversion of nitrates to nitrogen gas by anaerobic bacteria.
The change in the communities in an area over time.
Conversion of atmospheric nitrogen gas into ammonia or ammonium compounds.
6.
A grassy field experiences an increase in growth in an area where phosphorus has been added. However, no such growth occurs in a second area to which nitrogen has been added. Which is a limiting nutrient for this ecos...
SAT Biology - Question 172
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E
7.
Which products of the light-dependent reactions are used in the Calvin cycle?
ATP and reduced NADP
Oxygen and ATP
Glucose and NADP
CO2 and water
8.
In root nodules, leghaemoglobin:
Fixes nitrogen
Keeps oxygen concentration low to protect nitrogenase
Converts nitrate to N2
Carries carbohydrate
9.
In the catalase temperature experiment, what is the independent variable?
Volume of oxygen
Temperature
Mass of liver
Concentration of H₂O₂
10.
Calculate the percentage transfer efficiency from primary to secondary consumers in this measured ecosystem.
6.7%
85%
15%
1.5%
11.
Complete the statement: Glucose + oxygen → ______ (+ energy).
Complete the statement: Glucose + oxygen → ______ (+ energy).
Product
Aerobic respiration
Respiration
carbon dioxide + water
12.
Increasing light always increases the rate of photosynthesis. True or false?
False
True
True in greenhouses
True at night
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Part of 5. Energy Transfers In and Between Organisms (A Level only) — see every lesson and quiz in this unit.
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