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Biology OCR A level Paper 2 EXAM QUESTIONS AND ANSWERS 100% CORRECT! $11.49   Add to cart

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Biology OCR A level Paper 2 EXAM QUESTIONS AND ANSWERS 100% CORRECT!

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  • Biology OCR A level Paper 2 EXA
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  • Biology OCR A Level Paper 2 EXA

Role of cytokines during inflammation - ANSWER Attract phagocytes to the site then phagocytosis and increase temp, act as cell signalling molecules Structure of neutrophil - ANSWER Nucleus looks like 3 interconnected blobs -multilobed. Cytoplasm is grainy Structure of lymphocyte - ANSWER Smal...

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  • October 2, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • spores
  • Biology OCR A level Paper 2 EXA
  • Biology OCR A level Paper 2 EXA
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, Biology OCR A level Paper 2 EXAM
QUESTIONS AND ANSWERS 100%
CORRECT!
Examples of bacteria - ANSWER Tuberculosis, Ring rot, bacterial meningitis

Examples of viruses - ANSWER HIV/AIDS, Tobacco mosaic virus (plants), influenza

Examples of protoctista - ANSWER Malaria, potato/tomato late blight

Examples of fungi - ANSWER Ringworm (cattle), athletes foot, black sigatoka
(bananas)

Spores - ANSWER The cells that some organisms use to reproduce asexually,
including some protocista and all fungi

What does mucus contain - ANSWER Antimicrobial enzymes

Thromboplastin - ANSWER The enzyme that triggers cascade of reactions to form a
clot

Role of serotonin in blood clotting - ANSWER Makes smooth muscle in walls of blood
vessels contract, reduce blood supply to that area

Role of histamines in inflammation - ANSWER Make blood vessels dilate --> heat,
redness, prevents pathogens reproducing. Make vessel walls more leaky so blood
plasma is forced out --> swelling, pain

Role of cytokines during inflammation - ANSWER Attract phagocytes to the site then
phagocytosis and increase temp, act as cell signalling molecules

Structure of neutrophil - ANSWER Nucleus looks like 3 interconnected blobs -
multilobed. Cytoplasm is grainy

Structure of lymphocyte - ANSWER Smaller than neutrophil. Nucleus takes up most of
the cell

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