DP Chemistry (first assessment 2025)

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Question 23M.2.HL.TZ2.21

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Date May 2023 Marks available [Maximum mark: 2] Reference code 23M.2.HL.TZ2.21
Level HL Paper 2 Time zone TZ2
Command term Explain Question number 21 Adapted from N/A
21.
[Maximum mark: 2]
23M.2.HL.TZ2.21

Explain how strong analgesics like morphine work.

[2]

Markscheme

«temporarily» binding to receptors in the nervous system/spinal cord/brain ✓

preventing transmission of pain impulses ✓

 

Accept “bonding” for “binding” in M1.

Accept “without depressing the central nervous system” for M2.