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Course: Edexcel A Level Biology A (SNAB) 9BI0
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Edexcel A Level Biology A (SNAB) 9BI0

Topic 1 · Lifestyle, Health and Risk

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Topic 2 · Genes and Health

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Topic 3 · Voice of the Genome

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Topic 4 · Biodiversity and Natural Resources

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Topic 5 · On the Wild Side

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Topic 6 · Immunity, Infection and Forensics

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Topic 7 · Run for your Life

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Topic 8 · Grey Matter

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Quiz

5.2.7 Practical- The Hill Reaction – Unit exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.

A4.1 Evolution and speciation — Question 6 | DABOUR HUB

Dr Dabour Hub Academy - figure 1
A
B
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D
2.

ATP releases energy when

a phosphate is added
a phosphate group is removed, forming ADP
it is synthesised
glucose is made
3.

D4.1 Natural selection — Source question 1 | DABOUR HUB

Dr Dabour Hub Academy - figure 2
A
B
C
D
4.
Using the ATP table, why does the body not store 40 kg of ATP?
ATP is unstable and is recycled from ADP instead; glucose and fat store energy
ATP cannot be made
ATP is used only at night
ATP is stored in bones
5.

D4.1 Natural selection — Source question 7 | DABOUR HUB

Dr Dabour Hub Academy - figure 3
A
B
C
D
6.
Which pairing of greenhouse change and likely effect is correct when CO₂ is limiting?
Raising light — much faster photosynthesis
Lowering CO₂ — faster photosynthesis
Raising CO₂ — faster photosynthesis
Removing light — faster Calvin cycle
7.
Why does enzyme activity fall sharply at high temperatures?
Substrate molecules move slower
Activation energy increases
The enzyme denatures as bonds holding its shape break
ATP runs out
8.
Chloroplasts contain chlorophyll for:
Photosynthesis
Respiration
Storage
Protein synthesis
9.
What are the products of photosynthesis?
Carbon dioxide and water
Glucose and oxygen
Starch and carbon dioxide
Oxygen and water
10.
Students test maggots' response to light in a choice chamber. What is the independent variable?
Number of maggots on each side
Chamber size
Temperature
Light or dark side
11.
Hypothesis: "The oxygen released in photosynthesis comes from water." Which result supports this hypothesis?
When the plant was given CO2 containing 18O, the 18O appeared in the released oxygen
When the plant was given water containing 18O, the 18O appeared in the released oxygen
18O appeared in glucose when the water was labeled
Oxygen release increased as light intensity increased
12.
The 10% rule is an exact law that holds in every ecosystem. True or false?
True
True in forests
True for animals
False
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Part of Topic 5 · On the Wild Side — see every lesson and quiz in this unit.
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