pyruvate dehydrogenase complex
citric acid cycle
citric acid cycle pt 2
citric acid cycle products
citric acid cycle random
100

What are the three subunits of pyruvate dehydrogenase?

E1, E2, E3

100

What enzyme forms citrate in the presence of oxaloacetate?

citrate synthase

100

What is produced in the catalyzation of malate to oxaloacetate? 

NADH

100

What is produced in the catalyzation from isocitrate to alpha-ketoglutarate?

CO2 and NADH

100

Why can the citric acid cycle oxidize an unlimited number of acetyl groups?

The regeneration of oxaloacetate

or

Oxaloacetate is produced in the last step and consumed in the first step

200

What is the E1 coenzyme?

TPP (bound)

200
What enzyme forms isocitrate from citrate?
aconitase
200

What enzyme forms fumarate from succinate?

succinate dehydrogenase

200

What is produced in the catalyzation of alpha-ketoglutarate to succinyl-coA?

CO2 and NADH

200

What are the four dehydrogenase enzymes involved in the citric acid cycle?

isocitrate dehydrogenase

alpha-ketoglutarate dehydrogenase 

succinate dehydrogenase

malate dehydrogenase

300

What are the E2 coenzymes?

lipoamide (bound)

CoA (substrate)

300

What enzyme forms alpha-ketoglutarate from isocitrate?

Isocitrate dehydrogenase

300

What enzyme forms malate from fumarate?

fumarase

300

What is produced in the catalyzation of succinyl-CoA to succinate?

GTP or ATP

300

Which enzyme is similar to pyruvate dehydrogenase and why?

alpha-ketoglutarate dehydrogenase

because both enzymes produce a compound with CoA


400

What are the E3 coenzymes?

FAD (bound)

NAD (substrate)

400

What enzyme forms succinyl CoA from alpha-ketoglutarate?

alpha-ketoglutarate dehydrogenase

400

What enzyme forms oxaloacetate from malate? 

malate dehydrogenase

400

What is produced in the catalyzation of succinate to fumarate?

FADH2

400

What are the rate-controlling enzymes of the citric acid cycle? 

(hint: there are three)

citrate synthase 

isocitrate dehydrogenase

alpha-ketoglutarate dehydrogenase  

500

What enzyme converts pyruvate to acetyl CoA?

pyruvate dehydrogenase

500

What enzyme forms succinate from succinyl CoA?

succinyl CoA synthetase 

500

What are all the products of the citric acid cycle?

3 NADH

2 CO2

1 FADH2

1 GTP or ATP

500

What products from the citric acid cycle are used in the electron transport chain?

FADH and NADH

500

What intermediate from the citric acid cycle does fatty acid biosynthesis use?

fatty acid biosynthesis uses acetyl-coA