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Many students who study using our platform have reported that a large number of the practice questions here are very similar to those that appear in real exams. View Courses
Many students who study using our platform have reported that a large number of the practice questions here are very similar to those that appear in real exams. View Courses
Plant cells contain chloroplasts, while animal cells do not. What is the main function of chloroplasts in plant cells?
Correct Answer: C. To convert sunlight into chemical energy through photosynthesis.
Chloroplasts contain chlorophyll, a green pigment that captures light energy from the sun. This energy drives photosynthesis, a process that converts carbon dioxide and water into glucose and oxygen. The glucose produced serves as stored chemical energy for the plant’s growth, reproduction, and metabolic activities. This energy conversion sustains nearly all life on Earth, as plants form the foundation of food chains. Chloroplasts are vital for transforming solar energy into usable chemical energy, fueling ecosystems.
Why Other Options are Incorrect:
A. To release energy by breaking down glucose describes cellular respiration, which occurs in mitochondria, not chloroplasts. Chloroplasts create glucose; mitochondria extract energy from it.
B. To produce proteins used in cell repair is incorrect because protein synthesis happens in ribosomes and the rough endoplasmic reticulum, not chloroplasts.
D. To store genetic information for reproduction refers to the nucleus, which houses the main DNA controlling cell reproduction and heredity. Chloroplasts have their own DNA but not for reproduction.
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