SCIENCE
RESPIRATION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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photosynthesis uses food and cellular respiration produces food
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photosynthesis gives off oxygen and cellular respiration uses oxygen
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photosynthesis uses oxygen and cellular respiration uses carbon dioxide
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photosynthesis makes ATP and cellular respiration uses sunlight
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Detailed explanation-1: -Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by-products and ATP is energy that is transformed from the process.
Detailed explanation-2: -While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration. We breathe in that oxygen, which is carried through our blood to all our cells.
Detailed explanation-3: -Oxygen (O2) is evolved during photosynthetic electron transport when water is split by the oxygen-evolving complex to provide protons and electrons to the chloroplastic electron chain, thereby generating ATP and NADPH-the energy source and reducing power for plant metabolism.