Multiple Choice
Which of the following is not a part of photosynthesis?
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12. Photosynthesis
Overview of Photosynthesis
Multiple Choice
In plant cells, what is the role of mitochondria in relation to photosynthesis?
A
They generate ATP by cellular respiration, helping supply energy for cellular processes (including some associated with photosynthetic metabolism), but they do not carry out the light reactions.
B
They fix into sugars via the Calvin cycle in the stroma.
C
They contain chlorophyll and absorb light energy to excite electrons for the photosynthetic electron transport chain.
D
They are the primary site of the light-dependent reactions, producing from water splitting in thylakoid membranes.
Verified step by step guidance1
Understand that mitochondria and chloroplasts are distinct organelles with different roles in plant cells.
Recall that photosynthesis primarily occurs in chloroplasts, where light-dependent reactions take place in the thylakoid membranes, producing oxygen and energy-rich molecules.
Recognize that mitochondria are responsible for cellular respiration, a process that generates ATP by breaking down sugars, which provides energy for various cellular activities.
Note that while mitochondria do not perform photosynthesis or fix carbon dioxide into sugars, the ATP they produce supports energy-demanding processes in the cell, including some related to photosynthetic metabolism.
Conclude that mitochondria generate ATP through cellular respiration but do not carry out the light reactions or contain chlorophyll.
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