Gluconeogenesis and Regulation Quiz
18 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What are the main factors that stimulate Gluconeogenesis?

  • Increased levels of Fructose-2,6- bisphosphate
  • High levels of insulin and glucagon
  • High concentration of lactate, glycerol, and amino acids (correct)
  • High concentration of citrate, ATP, and Acetyl CoA

Which compound acts as an allosteric effector for PFK-1 and FBPase-1 enzymes in Gluconeogenesis regulation?

  • AMP
  • NADH
  • Fructose-2,6-bisphosphate (correct)
  • Acetyl CoA

What happens to the cellular level of Fructose-2,6-bisphosphate in response to Glucagon?

  • It remains unchanged
  • It increases
  • It converts to ATP
  • It decreases (correct)

Which hormone signals the liver to produce more glucose when blood glucose levels decrease?

<p>Glucagon (C)</p> Signup and view all the answers

What is the role of insulin in the regulation of Gluconeogenesis?

<p>Stimulates glycolysis and inhibits Gluconeogenesis (A)</p> Signup and view all the answers

Which enzyme is inhibited by AMP and ADP but stimulated by citrate and ATP during Gluconeogenesis?

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

What inhibits the alpha-KGA dehydrogenase enzyme?

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

Which molecule can inhibit Citrate synthase and IDH in cellular respiration?

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

In vertebrate muscle, which molecule activates IDH and alpha-KGA dehydrogenase among the given options?

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

Which tissues primarily depend on glucose for their energy needs?

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

What is the process of synthesizing glucose from non-carbohydrate precursors called?

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

Which organ is responsible for about 90% of Gluconeogenesis in the body?

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

What is the compartment where gluconeogenesis mainly occurs?

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

How many ATP molecules are needed for the synthesis of one glucose from 2 pyruvate or lactate?

<p>6 ATP (B)</p> Signup and view all the answers

Which set of reactions in gluconeogenesis are the reverse of glycolysis?

<p>Only 7 reactions (B)</p> Signup and view all the answers

Which enzyme converts Fructose-1,6-bisphosphate to Fructose-6-phosphate in gluconeogenesis?

<p>Fructose-1,6-bisphosphatase (C)</p> Signup and view all the answers

Which mitochondrial enzyme converts pyruvate to oxaloacetate in the first step of gluconeogenesis?

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

Where does pyruvate arise before being transported to the mitochondria during gluconeogenesis?

<p>Cytoplasm (C)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Browser