Chemistry, 19.12.2019 04:31 notorius315
Phosphofructokinase is a four-subunit protein with four active sites. phosphofructokinase catalyzes step 3 of glycolysis, converting fructose-6-phosphate to fructose-1,6-bisphosphate. phosphoenolpyruvate (pep) is the product of step 9 of glycolysis. the pep concentration in the cell affects phosphofructokinase activity. select the true statements about pep regulation of phosphofructokinase. a. pep is a feedback inhibitor of phosphofructokinase. b. the apparent affinity of phosphofructokinase for its substrate increases when pep binds. c. pep is a positive effector of phosphofructokinase. d. pep inhibition of phosphofructokinase yields a sigmoidal velocity versus substrate curve. e. pep competes with fructose-6-phosphate for the active site of phosphofructokinase. f. the binding of pep to one phosphofructokinase subunit causes a conformation change that affects the ability of the substrate to bind to the other subunits.
Answers: 1
Chemistry, 22.06.2019 16:00
Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules
Answers: 1
Chemistry, 22.06.2019 19:00
Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?
Answers: 1
Phosphofructokinase is a four-subunit protein with four active sites. phosphofructokinase catalyzes...
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