Multiple Choice
In an experiment investigating the effect of wavelength on photosynthesis, what is the primary purpose of the beaker left in the dark?
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9. Photosynthesis
Introduction to Photosynthesis
Multiple Choice
Plants photosynthesize _____.
A
to produce carbon dioxide as a waste product
B
to absorb oxygen from the atmosphere
C
to break down glucose for energy
D
to convert light energy into chemical energy
Verified step by step guidance1
Understand the process of photosynthesis: Photosynthesis is a biological process in which plants, algae, and some bacteria convert light energy into chemical energy stored in glucose molecules. This process primarily occurs in the chloroplasts of plant cells.
Identify the key inputs and outputs of photosynthesis: The inputs are carbon dioxide (CO₂), water (H₂O), and light energy. The outputs are glucose (C₆H₁₂O₆) and oxygen (O₂). The overall reaction can be represented as: .
Clarify the purpose of photosynthesis: The primary goal of photosynthesis is to convert light energy from the sun into chemical energy in the form of glucose. This glucose can later be used by the plant for energy through cellular respiration or stored for future use.
Eliminate incorrect options: (1) Plants do not produce carbon dioxide as a waste product during photosynthesis; instead, they release oxygen. (2) Plants do not absorb oxygen during photosynthesis; they absorb carbon dioxide. (3) Photosynthesis does not break down glucose for energy; it synthesizes glucose.
Conclude with the correct answer: The correct purpose of photosynthesis is 'to convert light energy into chemical energy,' as this aligns with the biological function of the process.
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