Cellular respiration and metabolism
Answers are for parents and teachers.
1
Make a table comparing photosynthesis and cellular respiration: inputs, outputs, where, and anabolic or catabolic.
Photosynthesis: CO₂ + H₂O + light → glucose + O₂, in chloroplasts, anabolic. Respiration: glucose + O₂ → CO₂ + H₂O + energy, in cytoplasm and mitochondria, catabolic.
2
Explain why the sentence “plants breathe in carbon dioxide at night” is wrong.
At night there is no photosynthesis; plants respire and release carbon dioxide.
3
Why do athletes’ muscle cells matter for this lesson? Mention mitochondria.
Muscles need much energy, so their cells have many mitochondria.
4
Sort into anabolic or catabolic: a seed growing, digesting bread, healing a scrape.
Growing: anabolic; digesting bread: catabolic; healing: anabolic.
5
Find the mistake: “Mitochondria make energy out of nothing.”
They release energy that was stored in food such as glucose.