Multiple Choice
In the context of cell biology, which organelle is found in plant cells (and algae) but not in animal cells and is the site of photosynthesis?
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12. Photosynthesis
Chloroplast
Multiple Choice
Where in the chloroplast is chlorophyll primarily found?
A
In the intermembrane space between the inner and outer chloroplast membranes
B
In the stroma as free pigment molecules dissolved in the cytosol-like fluid
C
In the outer chloroplast envelope membrane
D
In the thylakoid membranes (within photosystems)
Verified step by step guidance1
Recall the structure of the chloroplast, which includes the outer membrane, inner membrane, stroma, and thylakoid membranes.
Understand that chlorophyll is a pigment responsible for capturing light energy during photosynthesis.
Recognize that chlorophyll molecules are not free-floating in the stroma but are embedded within protein complexes called photosystems.
Identify that these photosystems are located specifically in the thylakoid membranes, which are internal membrane structures arranged in stacks called grana.
Conclude that chlorophyll is primarily found in the thylakoid membranes, where it plays a key role in the light-dependent reactions of photosynthesis.
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