Why is the citric acid cycle a cyclic pathway rather than a linear pathway?
in the oxidation of pyruvate to acetyl coa, one carbon atom is released as co₂. however, the oxidation of the remaining two carbon atoms—in acetate—to co₂ requires a complex, eight-step pathway—the citric acid cycle. consider four possible explanations for why the last two carbons in acetate are converted to co₂ in a complex cyclic pathway rather than through a simple, linear reaction.

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explanation:

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1. a host loses nutrients to a parasite

2. a parasite only benefits when the host is alive (cause if the host dies the parasite dies with it )

3. producers to consumers

4. the tapeworm is a parasite

5. they convert energy from the sun (photosynthesis)

6. sunflower-robin (i think im 80% sure)

7. producer

8. consumer

9. prey

10. fresh water snails ( cause the green algea is the producer and the snails are the primary consumers and the small fish consumer so is the big fish)

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.