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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

0/55

Topic 4 · Biodiversity and Natural Resources

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Topic 5 · On the Wild Side

0/72

Topic 6 · Immunity, Infection and Forensics

0/41

Topic 7 · Run for your Life

0/55

Topic 8 · Grey Matter

0/51
Quiz

7.1.2 Muscle Fibres – Exam questions

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  • Questions count: 3
  • Passing grade: B+
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1.

Slow twitch muscle fibres have

many mitochondria, much myoglobin and a rich capillary supply
few mitochondria
little myoglobin
mainly anaerobic respiration
2.

Fast twitch fibres

have many mitochondria
are red
are used for endurance
contract rapidly, rely mainly on anaerobic respiration and fatigue quickly
3.
Fast twitch fibres have:
Many mitochondria and much myoglobin
Rich capillary supply
Resistance to fatigue
Few mitochondria and rely on anaerobic respiration
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Part of Topic 7 · Run for your Life — see every lesson and quiz in this unit.
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