Multiple Choice
In plants, algae, and some bacteria, what is the primary purpose of photosynthesis?
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9. Photosynthesis
Introduction to Photosynthesis
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Which word equation correctly summarizes the overall process of photosynthesis in plants?
A
Nitrogen + hydrogen → ammonia
B
Carbon dioxide + water + light energy → glucose + oxygen
C
Glucose + oxygen → carbon dioxide + water + ATP
D
Carbon dioxide + oxygen → glucose + water
Verified step by step guidance1
Identify the reactants and products involved in photosynthesis. Photosynthesis uses carbon dioxide, water, and light energy as reactants to produce glucose and oxygen as products.
Recall the general word equation for photosynthesis: Carbon dioxide + water + light energy → glucose + oxygen.
Compare each given option to the known photosynthesis equation to determine which one matches the reactants and products correctly.
Eliminate options that describe other processes, such as nitrogen fixation (nitrogen + hydrogen → ammonia) or cellular respiration (glucose + oxygen → carbon dioxide + water + ATP).
Confirm that the correct word equation for photosynthesis is: Carbon dioxide + water + light energy → glucose + oxygen.
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