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7.3 Homeostasis and thermoregulation

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Question 19
F

A student makes two statements about thermoregulation.

  1. A low body temperature can slow enzyme-controlled reactions without changing the shape of the active sites.

  2. A sufficiently high body temperature can change active-site shape so that substrates no longer fit.

Which statement is correct?

[1]
A

both statement 1 and statement 2 are correct

B

statement 1 is correct but statement 2 is incorrect

C

statement 1 is incorrect but statement 2 is correct

D

both statement 1 and statement 2 are incorrect

Markscheme

7.3 Homeostasis and thermoregulation Questions

  1. GCSE
  2. /Biology
  3. /7.3 Homeostasis and thermoregulation

44 exam-style questions on Edexcel GCSE Biology 7.3 Homeostasis and thermoregulation, covering 7.3.1 Importance of a constant internal environment, 7.3.2 Importance of homeostasis, 7.3.3a Thermoregulation via the skin and hypothalamus, and 7.3.3b Vasoconstriction and vasodilation in thermoregulation. Each one has a worked solution and a mark scheme showing where the marks go.

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