Cellular Respiration Chapter 6.9 Flashcards Preview

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Flashcards in Cellular Respiration Chapter 6.9 Deck (5)
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1

Compare Photosynthesis and respiration pathways

Photosynthesis Respiration

Glucose End product Start product

O2 released as The last electron acceptor
waste (split from ( joins with H+ to become water)
water)

Co2 Taken in the
Carbon Cycle

2

The most ancient metabolic pathway

Glycolysis

3

Why is Gly the most ancient pathway

Glycolysis evolved when the atmosphere lacked or had very little O2.

It enabled organisms to extract energy from simple compounds in the non living environment

4

How did Photsynthesis evolve

May have originated in anaerobic cell that used hydrogen sulphide instead of water as an electron donor, releasing sulphur not oxygen in the environment

5

what evidence that photosynthesis evolved from glycosis

some of the reactions from the calvin cycle are the reverse of some of those in the Calvin Cycle