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Questions and Answers
What process do animals use to release energy stored in food?
What process do animals use to release energy stored in food?
- Fermentation
- Cellular respiration (correct)
- Photosynthesis
- Digestion
Humans can directly use sunlight for energy.
Humans can directly use sunlight for energy.
False (B)
What do humans need from the atmosphere for cellular respiration?
What do humans need from the atmosphere for cellular respiration?
Oxygen
What gas do humans need to remove from their bodies during gas exchange?
What gas do humans need to remove from their bodies during gas exchange?
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Oxygen moves from the ______ into the blood.
Oxygen moves from the ______ into the blood.
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What is the process called that describes the exchange of gases in the body?
What is the process called that describes the exchange of gases in the body?
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Study Notes
Photosynthesis and Energy Transfer
- Plants capture light energy and produce organic compounds.
- Animals lack chlorophyll and cannot directly use sunlight for energy.
- Animals obtain energy by consuming plants or other animals that have consumed plants.
- This process transfers light energy to all living organisms.
Cellular Respiration
- Humans, like all animals, require oxygen to release energy stored in food.
- This process is called cellular respiration and is detailed in Topic 2.4.
Gas Exchange
- Oxygen is taken up from the atmosphere and carbon dioxide is removed.
- Oxygen moves from the lungs into the blood and then to the cells.
- Carbon dioxide moves in the opposite direction.
- This exchange process is called gas exchange.
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