Cellular Respiration Overview

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

In which cellular compartment does glycolysis occur?

Outer Mitochondrial Membrane
Mitochondrial Matrix
Inner Mitochondrial Membrane
Cytoplasm (correct)

What is the net gain of ATP produced during glycolysis?

4 ATP
38 ATP
36 ATP
2 ATP (correct)

Which molecule is produced in the bridge reaction that links glycolysis to the Krebs cycle?

ATP
Glucose
Acetyl CoA (correct)
Pyruvate

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

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

Which of the following processes is NOT directly involved in ATP production?

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

Flashcards

Glycolysis

The first stage of cellular respiration; anaerobic process in the cytoplasm that converts glucose into 2 pyruvate.

Bridge Reactions

Conversion of pyruvate to Acetyl CoA, releasing CO2 and producing 2 NADH as pyruvate enters the mitochondria.

Krebs Cycle

Also known as the Citric Acid Cycle; an aerobic process in the mitochondrial matrix that processes Acetyl CoA, producing ATP, NADH, FADH2, and CO2.

Electron Transport Chain

An aerobic process occurring in the inner mitochondrial membrane where electrons from NADH and FADH2 are passed to create a proton gradient for ATP synthesis.

Signup and view all the flashcards

Chemiosmosis

The process where H+ ions flow back through ATP synthase due to a proton gradient created by the Electron Transport Chain, producing ATP.

Signup and view all the flashcards

Study Notes

Cellular Respiration

Glycolysis (anaerobic): Occurs in cytoplasm. Glucose is converted to 2 pyruvate. Net gain of 2 ATP and 2 NADH.
Bridge Reactions: Pyruvate is transported to mitochondria. Pyruvate is converted to Acetyl CoA. CO2 is released and 1 NADH is produced.
Krebs Cycle (Citric Acid Cycle, aerobic): Occurs in mitochondrial matrix. Acetyl CoA enters the cycle. Net gain of 2 ATP, 6 NADH, and 2 FADH2. CO2 is released.
Electron Transport Chain & Chemiosmosis (aerobic): Occurs in the inner mitochondrial membrane. Electrons from NADH and FADH2 are passed through proteins, releasing energy. This energy is used to pump H+ ions across the membrane, creating a gradient. H+ ions flow back across the membrane through ATP synthase, generating ATP. Oxygen is the final electron acceptor, forming water (H₂O). Net yield of approximately 32-34 ATP.