Unformatted text preview: = -7200J /mol + 12090)/m
3 of 6
= +4Boos / mal
Question 6. (3 pt.) Arsenate is a poison. It is a structural analog of phosphate, so it
inhibits proteins that use inorganic phosphate as a substrate. What enzyme does it
inhibit in glycolysis?_
Question 7. (9 pts) Complete the following statements about glycolysis using terms
from the list below. Some terms will not be used.
3-phosphoglycerate aldolase dihydroxyacetone phosphate enolase
fructose-1,6-bisphosphate glyceraldehyde 3-phosphate lactate oxidative
pyruvate phosphoenolpyruvate phosphofructokinase-1 substrate-level
A. The end product of glycolysis is
B. The first committed step of glycolysis is catalyzed by phosphofructoknox -
C. NAD+ is reduced in a reaction where erciderde 3-prespistoxidized.
D. ATP is "invested" in two steps to make the 6-carbon sugars _lucasc lo-phosphate
and _fructose lib biphosphate
E. ATP is produced in glycolysis by substrate level
F. Aldolase splits a hexose into these two three carbon compounds:
dihydroxyacetonephosphate and. glyceraldehyde 3- phosphate
G. phosphoen.pyrovee is the substrate of the second ATP-yielding reaction.
Question 8. (8 pts., 4 pts each) Draw the products of the reaction catalyzed by
aldolase in glycolysis.
CH 20- POS
H - C - OH
CHOPO2 2 -
Question 9. (2 pts) Which statement about gluconeogenesis is TRUE?
A. All reactions of gluconeogenesis are the reverse of glycolysis reactions.
B. Gluconeogenesis occurs in mammals but not in other types of organisms.
C. The liver is the primary site of gluconeogenesis in humans.
D. Only carbohydrate compounds are precursors for gluconeogenesis.
Question 10. (5pts.) Rates of biochemical reactions can be affected by
(circle all the correct answers)
A. ) Concentration of reactants...
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- Spring '11
- Exam #3