DP Biology (first assessment 2025)

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Question 22M.2.SL.TZ1.1b

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Date May 2022 Marks available [Maximum mark: 2] Reference code 22M.2.SL.TZ1.1b
Level SL Paper 2 Time zone TZ1
Command term Compare and contrast Question number b Adapted from N/A
b.
[Maximum mark: 2]
22M.2.SL.TZ1.1b
(b)

Compare and contrast the changes in mean ambient and body temperatures during 2012.

[2]

Markscheme

  Accept one similarity:

  1. both rise and then fall / both fall with hibernation and rise with activity
  2. both reach minimum during hibernation and maximum during activity;
  3. both lowest in January/February / both rise from January/February;

    Accept one difference    :

  4. one peak of ambient temp but body temp has two peaks / OWTTE;
  5. body temp remains maximal for longer/plateaus whereas ambient peaks;
  6. body temperature is always higher than ambient temperature;
  7. ambient range is greater than body temperature range / OWTTE;
Examiners report

Many candidates realized that they were expected to give similarities and differences between the curves, but most struggled to do this clearly. Rather than make eclectic statements about the data that may be correct but are not significant, the aim with a question such as this is to make comments that would allow someone who has not been shown the curves to sketch them. Some students confused maxima or minima with increases and decreases, so for example stating that ambient body temperature increased in July, when it reached a maximum in July and stopped increasing.

Syllabus sections