Biochemistry Regulation Flashcard Quiz
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Questions and Answers

What is the cofactor that serves to hold a carboxylate group for attack by the substrate in a carboxylase enzyme?

  • Niacin
  • Biotin (correct)
  • Thiamine
  • Riboflavin

What does the pentose phosphate pathway produce that can be used in biosynthesis or detoxification?

  • NADH
  • ATP
  • NADPH (correct)
  • FADH2

Which mechanism explains how ATP synthase catalyzes the synthesis of ATP?

  • Competitive inhibition
  • Allosteric regulation
  • Covalent modification
  • Binding change (correct)

What is the committed step of cholesterol synthesis in humans catalyzed by?

<p>HMG-CoA reductase (D)</p> Signup and view all the answers

What type of regulation allows one pathway to be turned on when its metabolically opposing pathway is simultaneously turned off?

<p>Reciprocal (A)</p> Signup and view all the answers

What is the cofactor that serves to hold a carboxylate group for attack by the substrate in a carboxylase enzyme?

<p>Biotin (B)</p> Signup and view all the answers

What does the pentose phosphate pathway produce that can be used in biosynthesis or detoxification?

<p>NADPH (D)</p> Signup and view all the answers

Which mechanism explains how ATP synthase catalyzes the synthesis of ATP?

<p>Binding change mechanism (C)</p> Signup and view all the answers

What type of regulation allows one pathway to be turned on when its metabolically opposing pathway is simultaneously turned off?

<p>Reciprocal regulation (A)</p> Signup and view all the answers

What is the committed step of cholesterol synthesis in humans catalyzed by?

<p>HMG-CoA reductase (D)</p> Signup and view all the answers

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