DP Biology (first assessment 2025)

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Question 19M.2.SL.TZ2.b

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.2.SL.TZ2.b
Level SL Paper 2 Time zone TZ2
Command term Identify Question number b Adapted from N/A
b.
[Maximum mark: 1]
19M.2.SL.TZ2.b

Using evidence from the chart, identify, giving a reason, which group of neurons responded most to the chemicals.

[1]

Markscheme

G1 always respond more than 25% «except control», while G2 and G3 always respond 25% or less ✔

G1 always responds more than G2 and G3/all of the others ✔

OWTTE

Examiners report

many lost the mark by not stating the reason that the G1 responses were higher than the others (G2 and G3)

Syllabus sections