| Date | November 2020 | Marks available | 1 | Reference code | 20N.1.SL.tz0.13 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | What | Question number | 13 | Adapted from | N/A |
Question
The diagram shows the ultrastructure of a generalized animal cell. What is the main function of the organelle labelled X?
[Source: Siyavula Education, Grade 10 Life Science: Cell Structure And Function, https://www.siyavula.
com/read/science/grade-10-lifesciences/cells-the-basic-units-of-life/02-cells-the-basic-units-of-life-02. Everything
Maths and Sciences textbooks can be freely downloaded at www.siyavula.com. Republished under Creative
Commons Attribution 4.0 International licence, https://creativecommons.org/licenses/by/4.0/legalcode.]
A. Protein synthesis
B. Digestion of macromolecules
C. Cellular respiration
D. DNA storage
Markscheme
C
Examiners report
The ninth most challenging question (72.46 %). The main distractors were A and D. Although the diagram of the animal cell could have been clearer in other areas, the indicated organelle was clearly a mitochondrion.
Syllabus sections
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17N.1.SL.tz0.14:
The diagram below shows the ultrastructure of an animal cell. What is the structure labelled X?
[Source: https://en.wikipedia.org/wiki/Eukaryote#/
media/File:Animal_cell_structure_en.svg, by Mariana Ruiz]A. Nucleus
B. Mitochondrion
C. Lysosome
D. Golgi apparatus
- 21N.2.SL.tz0.3a: The diagram represents the ultrastructure of a generalized animal cell. Annotate...
- 16M.1.SL.tz0.14: Which of the following is the function of the Golgi apparatus? A. It is involved in the...
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22M.1.SL.tz0.14:
The diagram shows an animal cell. What is the function of X?
[Source: Siyavula, n.d. [Animal cell] [image] Available at: https://www.siyavula.com/science/lifesciences/grade-10/02-the-basicunits-of-life/02-the-basic-units-of-life-03.cnxmlplus This file is licensed under the Creative Commons Attribution-4.0 Unported (CC BY 4.0) license (http://creativecommons.org/licenses/by/4.0/) [Accessed 09 August 2017]. Source adapted.]
A. Protein synthesis
B. Controlling gene expression
C. Cell respiration
D. Ingestion and removal of waste
