Cellular Metabolism Overview
29 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 is the definition of catabolism?

  • The process of synthesizing larger molecules from smaller ones.
  • The process of breaking down large nutrient molecules into smaller molecules with the concurrent production of energy. (correct)
  • The sum of all chemical reactions involved in maintaining the dynamic state of a cell or organism.
  • A series of biochemical reactions.

Which process involves the conversion of glucose to Pyruvic Acid?

  • Glycolysis (correct)
  • Krebs cycle
  • The citric acid cycle
  • Electron transport chain

What is the function of NAD+/NADH in cellular metabolism?

  • Transfer of electrons in biological oxidation-reduction reactions (correct)
  • Storage and transfer of phosphate groups
  • Transfer of acetyl groups
  • Synthesis of larger molecules

Which compound is considered the most important in the transfer of phosphate groups in metabolism?

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

What does Coenzyme A (CoA) primarily facilitate the transfer of in metabolism?

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

In which process are two phosphoric anhydride bonds and one phosphoric ester bond found?

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

Which molecule is oxidized in step 7 of the citric acid cycle?

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

Which enzyme catalyzes the formation of succinyl CoA in the citric acid cycle?

<p>α-Ketoglutarate dehydrogenase (A)</p> Signup and view all the answers

What molecule is produced by the oxidation of succinate in the citric acid cycle?

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

What is the product when a phosphate group is transferred to ADP in the citric acid cycle?

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

Which compound is regenerated in the last step of the citric acid cycle?

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

Where is the enzyme that carries out the oxidation of succinate to fumarate located?

<p>Inner membrane of the mitochondrion (C)</p> Signup and view all the answers

What is the function of acetyl CoA in cellular respiration?

<p>Transport the acetyl group to the citric acid cycle (C)</p> Signup and view all the answers

Which molecule is produced by the oxidation of the two-carbon molecule in pyruvate?

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

Where does the Krebs Cycle (TCA cycle) occur within the cell?

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

What is the main purpose of the Krebs Cycle in cellular respiration?

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

In the context of cellular respiration, what role does Coenzyme A (CoA) play?

<p>Acts as an energy carrier (B)</p> Signup and view all the answers

Which molecule is not directly involved in the production of ATP in the TCA cycle?

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

What is the role of NAD+ in cellular respiration?

<p>Acts as an oxidizing agent (B)</p> Signup and view all the answers

Which molecule is reduced to NADH?

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

What is the function of Coenzyme A in cellular respiration?

<p>Carries acetyl groups (D)</p> Signup and view all the answers

Where does glycolysis occur in eukaryotic cells?

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

What is the net gain of ATP molecules from glycolysis?

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

What is the main function of the electron transport chain in cellular respiration?

<p>To create an electrochemical gradient for the production of ATP (C)</p> Signup and view all the answers

Which protein complex in the electron transport chain is responsible for pumping four hydrogen ions across the membrane?

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

What is the role of flavin mononucleotide (FMN) in the electron transport chain?

<p>To carry electrons to Complex I (B)</p> Signup and view all the answers

Where specifically does the electron transport chain take place within the cell?

<p>Mitochondria inner membrane (B)</p> Signup and view all the answers

Which molecule is directly received by Complex II in the electron transport chain?

<p>FADH2 (A)</p> Signup and view all the answers

What is a prosthetic group in the context of the electron transport chain?

<p>A non-protein molecule required for a protein's activity (A)</p> Signup and view all the answers
Use Quizgecko on...
Browser
Browser