Refer to the diagram of the citric acid cycle to answer each of the following. P

Question

Refer to the diagram of the citric acid cycle to answer each of the following.

Part A

What are the six-carbon compounds?

What are the six-carbon compounds?

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Part B

How is the number of carbon atoms decreased?

How is the number of carbon atoms decreased?

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Part C

What is the five-carbon compound?

What is the five-carbon compound?

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Part D

Which reactions are catalyzed by synthases?

Check all that apply.

Check all that apply.

succinate, fumarate, malate, and oxaloacetate citrate and isocitrate acetyl CoA and succinyl CoA fumarate, malate, and oxaloacetate CH CoA COO H2O Acetyl CoA NADH HS CoA CH COO Citrate COO CH synthase COO Oxaloacetate HO COO HO Malate CH dehydrogenase Aconitase COO COO Citrate COO Malate Fumarase COO CH COO Fumarate Citric Acid cycle HO FADH Succinate COO dehydrogenase Isocitrate FAD Isocitrate dehydrogenase COO CH COO CH HS CoA Succinyl CoA. a-Ketoglutarate CH COO dehydrogenase synthase Succinate* COO CO2 HS-CoA CH ADP CH COO GDP Pi a-Ketoglutarate NADH NAD ATP CoA. Succinyl CoA *Succinate is a symmetrical compound.

Explanation / Answer

A = citratre and isocitrate

B = carbon atoms removed as co2 (i.e in 3rd and 4th reaction )

C = alpha keto gluterate

D = reaction 1 and   reaction 5

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