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

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

0/41

Topic 7 · Run for your Life

0/55

Topic 8 · Grey Matter

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Quiz

5.3.9 Carbon Cycle and Reduction of Atmospheric Carbon Dioxide – Exam questions

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  • Questions count: 4
  • Passing grade: B+
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1.
Which of the following describes a possible path of a carbon atom among atmospheric carbon dioxide, the tissues of a consumer, and the tissues of a producer?
SAT Biology - Question 235
A
B
C
D
E
2.
A student summarized the nitrogen cycle as follows. In which step is the error? Step 1: Bacteria in the root nodules of legumes fix atmospheric N2 into ammonia. Step 2: Nitrifying bacteria convert ammonia into nitrates. Step 3: Plants absorb nitrates to build proteins. Step 4: Nitrifying bacteria convert nitrates into N2, which returns to the atmosphere.
Step 1
Step 2
Step 3
Step 4
3.
Which cycle lacks a significant atmospheric reservoir?
Phosphorus
Carbon
Nitrogen
Water
4.
Which process converts atmospheric N2 into ammonia?
Nitrification
Denitrification
Nitrogen fixation
Assimilation
  • 1
  • 2
  • 3
  • 4
Part of Topic 5 · On the Wild Side — see every lesson and quiz in this unit.
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