Praxis 5511 Practice Question
Which of the following organelles is primarily responsible for capturing light energy and using that energy to produce sugars in plant cells?
Correct Answer: D
Rationale: Chloroplasts are the organelles that capture light energy through photosynthesis, converting it into chemical energy stored in sugars, making them essential for plant cells.
Mitochondria (Option A) are involved in cellular respiration, converting sugars into ATP for energy, but do not capture light energy. Ribosomes (Option B) are responsible for protein synthesis, playing no role in energy capture or sugar production. The nucleus (Option C) houses genetic material and regulates cellular activities but does not directly participate in energy capture or sugar synthesis. Thus, chloroplasts uniquely fulfill the role of energy capture in plants.
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