Krebs Cycle and Cellular Respiration Quiz

<p>It acts as an electron acceptor. (B)</p> Signup and view all the answers

<p>Conversion of malate to oxaloacetate (D)</p> Signup and view all the answers

<p>Citric Acid Cycle (D)</p> Signup and view all the answers

<p>To generate ATP and electron carriers (A)</p> Signup and view all the answers

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

<p>2 (B)</p> Signup and view all the answers

<p>They provide electrons for the electron transport chain (A)</p> Signup and view all the answers

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

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

<p>It provides building blocks for biosynthesis (D)</p> Signup and view all the answers

<p>2 (A)</p> Signup and view all the answers

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

<p>It loses a CO2 molecule and reduces NAD+ to NADH. (B)</p> Signup and view all the answers

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

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

<p>It is oxidized, reducing NAD+ to NADH. (B)</p> Signup and view all the answers

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

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

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

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

<p>It loses CO2 (C)</p> Signup and view all the answers

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

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

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

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

<p>It catalyzes the conversion from citrate to isocitrate (B)</p> Signup and view all the answers

<p>Reduced oxygen supply (B)</p> Signup and view all the answers

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

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

<p>It indicates an irreversible reaction (C)</p> Signup and view all the answers

<p>It reduces ethanal to ethanol. (C)</p> Signup and view all the answers

<p>To enhance muscle performance (C)</p> Signup and view all the answers

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

<p>38 ATP (A)</p> Signup and view all the answers

<p>The type of shuttle used for electron transport (C)</p> Signup and view all the answers

<p>C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + 38 ATP (B)</p> Signup and view all the answers

<p>2 ATP (C)</p> Signup and view all the answers

<p>2 ATP (B)</p> Signup and view all the answers

<p>2 ATP (B)</p> Signup and view all the answers

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

<p>32 to 34 ATP (C)</p> Signup and view all the answers

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

<p>All cells produce the same amount of ATP. (A)</p> Signup and view all the answers

A key metabolic pathway involved in cellular respiration, converting acetyl CoA into energy.

A molecule that enters the citric acid cycle, derived from carbohydrates and fats.

An electron carrier produced during glycolysis and the citric acid cycle, important for ATP production.

The generation of adenosine triphosphate (ATP) through metabolic pathways.

The metabolic pathway where ATP is formed as electrons are transferred to oxygen.

The removal of amino groups from amino acids during protein hydrolysis.

Organisms that can respire both aerobically and anaerobically depending on oxygen availability.

Organisms that can only survive in low or no oxygen and rely solely on anaerobic respiration.

A process by which yeast converts pyruvate into ethanol and CO2, regenerating NAD+.

A process that converts pyruvate into lactate in muscle cells when oxygen is scarce.

A key intermediate in metabolism, converted to lactate or ethanol depending on the fermentation type.

The liver converts lactate back to pyruvate if oxygen is available, allowing aerobic respiration.

The process in fermentation where NAD+ is regenerated for re-use, allowing continued ATP production.

A compound formed in the citric acid cycle and the first input molecule.

The isomer of citrate formed by removal of water and addition of another molecule.

An enzyme that catalyzes the conversion of citrate to isocitrate.

The compound formed from isocitrate after losing a CO2 molecule.

The process in which isocitrate loses a carbon dioxide molecule during conversion to α-ketoglutarate.

The process by which isocitrate loses electrons, reducing NAD+ to NADH.

An enzyme that catalyzes the conversion of isocitrate to α-ketoglutarate.

The process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

The first stage of cellular respiration where glucose is broken down into pyruvate, yielding ATP and NADH.

A series of enzyme-catalyzed reactions that produce energy carriers (NADH, FADH2) from acetyl CoA.

For each glucose, the Krebs cycle produces 2 ATP, 6 NADH, and 2 FADH2.

The final stage of cellular respiration where NADH and FADH2 are used to produce ATP through oxidative phosphorylation.

The removal of carbon dioxide from a molecule, occurring in the Krebs cycle.

The aspect of metabolism that involves building larger molecules from smaller ones, contributing to cellular functions.

An anaerobic process that allows cells to generate energy without oxygen, producing lactic acid or alcohol.

1 NADH can generate 3 ATP in aerobic respiration.

1 FADH2 can generate 2 ATP in aerobic respiration.

Glycolysis produces 2 ATP per glucose molecule.

Krebs cycle also produces 2 ATP per glucose molecule.

Electron Transport Chain generates 30 ATP from 10 NADH and 4 ATP from 2 FADH2.

Total ATP produced in aerobic respiration is 38 ATP per glucose molecule.

C6H12O6 + 6O2 → 6CO2 + 6H2O + 38 ATP.

Electrons from glycolysis can be shuttled to either FAD or NAD+, affecting ATP yield.

Brain cells yield 36 ATP due to FAD shuttle use.

Liver and heart cells yield 38 ATP as they utilize NAD+ shuttle.