Glycolysis

Question 1

Glycolysis

Answer 1

Breakdown of Glucose; 10 step linear pathway, in cytoplasm; 1 glucose->2 pyruvates +2 atp +2 NADH

Question 2

Steps 1-5

Answer 2

break 1 glucose into 2 glyceraldehyde 3-phosphate fragments - requires 2 atp

Question 3

Steps 6-10

Answer 3

occurs twice for each glucose; produce 2 pyruvate, 4 atp, 2 nadh/h+

Question 4

Controlled at steps ___, ___, ___

Answer 4

1, 3, 10

Question 5

Step 3 main control

Answer 5

atp, citrate negative effectors for phosphofuctokinase, ADP AMP positive effectors, turned off when high in atp and citrate

Question 6

Step 1

Answer 6

Catalyzed by hexokinase, glucose 6-phosphate as negative effector, concentration of glucose 6-phosphate can rise from inhibition of step 3, manufacture of glucose, breakdown of glycogen

Question 7

Step 10

Answer 7

Catalyzed by pyruvate kinase; atp, fructose, 1,6-biphosphate and alanine as negative effectors, 1,6-biphosphate is reactant in step 4

Question 8

Anaerobic conditions lead to

Answer 8

lactate formation

Question 9

Aerobic conditions lead to

Answer 9

Acetyl-CoA formation

Question 10

Conversion of glucose to lactate under anaerobic conditions is

Answer 10

spontaneous; energy released as heat