3.4 The role of coenzymes in biochemical pathways

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Last updated 4:29 AM on 5/19/26
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7 Terms

1
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what are coenzymes?

molecules that bind to the active site and assist an enzyme in its activity → help with substrate fit on the active site better → helps enzyme reaction take place

2
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what are the roles of coenzymes?

  • transfers atoms or groups of atoms, such as hydrogen, phosphate groups and acetyl groups

  • energy transfers

3
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what are the types of coenzymes?

  • High energy form loaded - electron donators with a transferable group e.g NADH

  • Low energy form that is unloaded - electron acceptance e,g NAD+

4
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What are cofactors?

cofactors are non-protein "helper" molecules or ions that bind to an enzyme

5
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How can you differentiate between the coenzyme and cofactor?

All coenzymes are cofactors, but not all cofactors are coenzymes


6
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what are the coenzymes used in photosynthesis?

NADP+ and NADPH

ATP + Pi

7
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what are the coenzymes used in cellular respiration?

NAD+ and NADH

ATP + Pi

FAD and FADH2