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2.2 Animal tissues, organs and organ systems

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Question 82

A hospital monitored two blood components in a patient receiving treatment.

Blood componentCount per mm³ on day 0Count per mm³ on day 28
Red blood cells3 000 0004 500 000
Platelets240 000120 000
a.

Calculate the percentage change from day 0 to day 28 for each blood component. State whether each change is an increase or a decrease.

[2]
b.

A clinician says, ‘These results show that the patient's blood was functioning better overall on day 28.’ Explain whether the data support this statement.

[5]
Markscheme

2.2 Animal tissues, organs and organ systems Questions

  1. GCSE
  2. /Biology
  3. /2.2 Animal tissues, organs and organ systems

304 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.

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