Read aerobic respiration
Read aerobic respiration using supplied evidence and a solved model.
About 25 minutes, plus any extended practice
Supplied materials
- All measurements and observations below are supplied classroom examples. They are not data from actual learners or a claim about a particular real site.
- Paper or a browser document for a labeled drawing, table or explanation.
- Worked problem inputs: A green plant is in darkness with stored sugar and oxygen available. Which pathway can continue in the simplified model?
- Assessment case 1: A dark plant model retains sugar, oxygen and functional respiration pathways. What can continue? Which inference or prediction is best supported?
- Assessment case 2: Which scientific label fits the specifically described step or feature? Supplied case: Required gas for aerobic pathway.
- Assessment case 3: Which scientific label fits the specifically described step or feature? Supplied case: Carbon exits in this gas.
- Assessment case 4: Which scientific label fits the specifically described step or feature? Supplied case: Cellular transfer molecule is produced.
- Assessment case 5: Which scientific label fits the specifically described step or feature? Supplied case: Fuel contains stored chemical energy.
- Assessment case 6: A plant’s respiration model uses oxygen and returns CO₂. What inference follows? Which inference or prediction is best supported?
Learn the idea
Aerobic cellular respiration transfers chemical energy from organic molecules to usable cellular processes, with carbon dioxide and water among products. Plants also respire; photosynthesis does not replace respiration.
Organic fuel means glucose used in simplified model. Oxygen means reactant in aerobic respiration. Carbon dioxide means carbon-containing respiration product. Atp means cellular energy-transfer molecule generated through processes.
For the supplied mechanism problem, A green plant is in darkness with stored sugar and oxygen available. Which pathway can continue in the simplified model? Respiration can continue using organic fuel and oxygen. Light-dependent photosynthesis cannot proceed as described without light. Plants perform respiration rather than being exempt from it.
- Read the supplied problem and mark the structures, processes or quantities named: A green plant is in darkness with stored sugar and oxygen available. Which pathway can continue in the simplified model?
- Draw the relevant boundary, pathway or comparison and label it using the scientific ideas above.
- Write a causal explanation or calculation, showing how each observation supports the result.
- Compare your reasoning with the worked solution; name a condition that would change or limit the inference.
See the method in action
Worked supplied problem: A green plant is in darkness with stored sugar and oxygen available. Which pathway can continue in the simplified model? Solution: Respiration can continue using organic fuel and oxygen. Light-dependent photosynthesis cannot proceed as described without light. Plants perform respiration rather than being exempt from it. This conclusion uses the stated observations and the mechanism explained above; it does not establish every unmeasured feature of a real organism, device or place.
Check your reasoning
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Helpful tips
- Use the feature “glucose used in simplified model” to justify organic fuel; do not sort by the name alone.
- Distinguish oxygen (reactant in aerobic respiration) from a different process occurring in the same situation.
See the answer and explanation
Aerobic respiration can continue without current light capture.
Respiration uses available organic fuel and oxygen; photosynthesis has different requirements.
Take it further
New nighttime model supplies stored sugar and oxygen but no light. Expected: respiration can continue; the stated light-dependent photosynthesis pathway lacks its energy input.
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More practice: try new cases
Choose an answer for each problem. Explain your method on paper, then use the feedback to decide what to revisit.
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Check the subject sources
These LifeStarter passages, scenarios and exercises are authored for this Academy with AI assistance and review. External resources keep their publishers’ terms. A grade label suggests a starting level; it does not establish alignment with your school’s complete requirements.