The enzyme phosphofructokinase-1 (PFK-1) catalyzes the reaction F6P+ ATP-> F1,6BP + ADP during glycolysis. When ATP concentrations get very high, ATP also binds to a location on PFK-1 outside of the active site, preventing it from catalysis. This is an example of: OZymogen activation Covalent modification. Allosteric inhibition. O Competitive inhibition Allosteric activation

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Hh.86.

 

QUESTION 7
The enzyme phosphofructokinase-1 (PFK-1) catalyzes the reaction F6P + ATP > F1,68P + ADP during glycolysis. When ATP concentrations get
very high, ATP also binds to a location on PFK-1 outside of the active site, preventing it from catalysis. This is an example of
OZymogen activation
Covalent modification.
Allosteric inhibition.
O Competitive inhibition
Allosteric activation
QUESTION 8
The last product in a reaction pathway often regulates the activity of the first enzyme in the branch of the pathway that is unique to its production when the
concentration of the product gets very high. Because the structure of the product is very likely to differ substantially from that of the the enzyme's normal
substrate, this type of regulation is most likely:
Allosteric inhibition
Competitive inhibition
Allosteric activation
Competitive activation
O Covalent modification
00
Transcribed Image Text:QUESTION 7 The enzyme phosphofructokinase-1 (PFK-1) catalyzes the reaction F6P + ATP > F1,68P + ADP during glycolysis. When ATP concentrations get very high, ATP also binds to a location on PFK-1 outside of the active site, preventing it from catalysis. This is an example of OZymogen activation Covalent modification. Allosteric inhibition. O Competitive inhibition Allosteric activation QUESTION 8 The last product in a reaction pathway often regulates the activity of the first enzyme in the branch of the pathway that is unique to its production when the concentration of the product gets very high. Because the structure of the product is very likely to differ substantially from that of the the enzyme's normal substrate, this type of regulation is most likely: Allosteric inhibition Competitive inhibition Allosteric activation Competitive activation O Covalent modification 00
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