DP Biology (first assessment 2025)

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Question 21N.1A.HL.TZ1.28

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Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.1A.HL.TZ1.28
Level HL Paper 1A Time zone TZ1
Command term Question number 28 Adapted from N/A
28.
[Maximum mark: 1]
21N.1A.HL.TZ1.28

What is the primary function of the free ribosomes shown in the electron micrograph?

[Source: J Gordon Betts, et al. Anatomy and Physiology. Houston Texas: OpenStax, 2013. https://openstax.org/books/
anatomy-and-physiology/pages/3-2-the-cytoplasm-and-cellular-organelles. Image file available at https://commons.
wikimedia.org/wiki/File:0313_Endoplasmic_Reticulum.jpg#/media/File:0313_Endoplasmic_Reticulum_b_labeled.
png. This file is licensed under the Creative Commons Attribution 3.0 Unported license. https://creativecommons.org/
licenses/by/3.0/deed.en.]

 

A. Synthesize proteins to be used within the cell

B. Synthesize proteins for use in lysosomes

C. Carry amino acids to mRNA for protein synthesis

D. Synthesize proteins for secretion

[1]

Markscheme

A

Syllabus sections