DP Biology (first assessment 2025)

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Question 23M.1A.HL.TZ2.27

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1A.HL.TZ2.27
Level HL Paper 1A Time zone TZ2
Command term Question number 27 Adapted from N/A
27.
[Maximum mark: 1]
23M.1A.HL.TZ2.27

The micrograph shows part of a chloroplast.

[Source: Newcomb, E., n.d. [Detail of a chloroplast]. [image online] Available at: https://search.library.wisc.edu/digital/
AHDTZ7JMHZ5VSU8C [Accessed 1 October 2021] © Board of Regents of the University of Wisconsin System.
Licensed under the Creative Commons Attribution 4.0 International. https://creativecommons.org/licenses/by/4.0/
deed.en.]

 

What reaction takes place in region P?

A.  Carboxylation of ribulose bisphosphate

B.  Photolysis of water molecules

C.  Generation of ATP by ATP synthase

D.  Reduction of NAD in Photosystem I

[1]

Markscheme

A

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