Test 1- Definitions- the words taken from sheet your teacher gave you - the ones above the picture

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is the initial step of cellular respiration?

  • Glycolysis (correct)
  • Electron Transport Chain
  • ATP Synthesis
  • Krebs Cycle

Where does glycolysis occur in the cell?

  • Nucleus
  • Mitochondria
  • Cytoplasm (correct)
  • Endoplasmic Reticulum

What is the main product of glycolysis?

  • Oxaloacetate
  • Acetyl CoA
  • Citric Acid
  • Pyruvate (correct)

How many ATP molecules are produced during glycolysis?

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

What molecule is formed from pyruvate before it enters the Krebs cycle?

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

Where does the Krebs cycle take place?

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

Which of the following is a product of the Krebs cycle?

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

What is the function of ATP synthase?

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

Which process directly produces the most ATP in cellular respiration?

<p>Electron Transport Chain (C)</p>
Signup and view all the answers

What is the role of NADH in cellular respiration?

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

When NAD⁺ gains electrons, what does it become?

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

What is the main role of Coenzyme A?

<p>To carry carbon atoms into the Krebs Cycle (A)</p>
Signup and view all the answers

What molecule does Acetyl CoA combine with to start the Krebs cycle?

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

Which of the following is required for aerobic respiration to occur?

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

What is the final electron acceptor in the electron transport chain?

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

What happens to a molecule when it is reduced?

<p>It gains electrons (B)</p>
Signup and view all the answers

What happens to a molecule when it is oxidized?

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

During glycolysis, is glucose oxidized or reduced?

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

Which cycle occurs in the mitochondrial matrix?

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

What type of enzymes are found in the mitochondrial matrix?

<p>Krebs cycle enzymes (A)</p>
Signup and view all the answers

Which electron carrier becomes FADH₂ after gaining electrons?

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

When is FAD reduced to FADH₂?

<p>During the Krebs Cycle (C)</p>
Signup and view all the answers

Which process involves proteins passing electrons and pumping protons?

<p>Electron Transport Chain (D)</p>
Signup and view all the answers

Where is the electron transport chain located?

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

What is the role of electrons from NADH and FADH₂ in the electron transport chain?

<p>To move through the ETC to make ATP (B)</p>
Signup and view all the answers

What is the definition of Glycolysis?

<p>The breakdown of glucose into two pyruvate molecules (A)</p>
Signup and view all the answers

What is the definition of Pyruvate?

<p>Three carbon molecule made from glucose during glycolysis (B)</p>
Signup and view all the answers

What is the definition of Aerobic Respiration?

<p>Process that uses oxygen to release energy from glucose. (D)</p>
Signup and view all the answers

What is the definition of the Electron Transport Chain (ETC)?

<p>A group of proteins in the inner mitochondrial membrane that pass electrons and pump protons. (C)</p>
Signup and view all the answers

What is the definition of Oxidation?

<p>A chemical reaction where a molecule loses electrons. (A)</p>
Signup and view all the answers

Flashcards

Glycolysis

The first step of cellular respiration where glucose is broken into two pyruvate molecules.

Pyruvate

A 3-carbon molecule made from glucose during glycolysis.

Krebs Cycle (Citric Acid Cycle)

A cycle of reactions in the mitochondrial matrix that generates electron carriers.

ATP Synthase

An enzyme that uses energy from flowing protons to make ATP.

Signup and view all the flashcards

NAD/NADH

NAD⁺ is an electron carrier that becomes NADH when it gains electrons.

Signup and view all the flashcards

Coenzyme A

A molecule that helps carry carbon atoms into the Krebs Cycle.

Signup and view all the flashcards

Acetyl Coenzyme A (Acetyl CoA)

A 2-carbon molecule that enters the Krebs Cycle.

Signup and view all the flashcards

Aerobic Respiration

A process that uses oxygen to release energy from glucose.

Signup and view all the flashcards

Reduction

A chemical reaction where a molecule gains electrons.

Signup and view all the flashcards

Oxidation

A chemical reaction where a molecule loses electrons.

Signup and view all the flashcards

Mitochondrial Matrix

The inner space of the mitochondria where the Krebs Cycle happens.

Signup and view all the flashcards

FAD/FADH₂

FAD is an electron carrier that becomes FADH₂ after gaining electrons.

Signup and view all the flashcards

Electron Transport Chain (ETC)

A group of proteins in the inner mitochondrial membrane that pass electrons and pump protons.

Signup and view all the flashcards

Study Notes

  • Glycolysis is the initial stage of cellular respiration, where glucose is broken down into two pyruvate molecules within the cytoplasm.

    • This process yields 2 ATP and 2 NADH molecules.

  • Pyruvate is a 3-carbon molecule resulting from glucose breakdown during glycolysis.

    • Pyruvate moves into the mitochondria and is converted into Acetyl CoA.

  • The Krebs Cycle (Citric Acid Cycle) is a series of reactions occurring in the mitochondrial matrix.

    • It generates electron carriers like NADH and FADH₂, along with 1 ATP per Acetyl CoA molecule.

  • ATP Synthase is an enzyme that harnesses the energy from flowing protons to produce ATP.

    • It plays a crucial role in the electron transport chain, where it synthesizes the majority of a cell's ATP.

  • NAD⁺ is an electron carrier that is transformed into NADH when it accepts electrons.

    • It picks up electrons during both glycolysis and the Krebs Cycle.

  • Coenzyme A assists in transporting carbon atoms into the Krebs Cycle.

    • It binds to a 2-carbon fragment derived from pyruvate, forming Acetyl CoA.

  • Acetyl Coenzyme A (Acetyl CoA) is a 2-carbon molecule that enters the Krebs Cycle.

    • It initiates the cycle by combining with oxaloacetate.

  • Aerobic Respiration is a process that utilizes oxygen to extract energy from glucose.

    • Oxygen is essential in the electron transport chain for water production, facilitating ATP synthesis.

  • Reduction is a chemical reaction involving the gain of electrons by a molecule.

    • NAD⁺ undergoes reduction to NADH during the Krebs Cycle.

  • Oxidation is a chemical reaction where a molecule loses electrons.

    • Glucose is oxidized during glycolysis.

  • The Mitochondrial Matrix is the inner space within the mitochondria where the Krebs Cycle takes place.

    • Enzymes present in the matrix facilitate the reactions of the Krebs Cycle.

  • FAD is an electron carrier that is converted to FADH₂ when it gains electrons.

    • FAD is reduced to FADH₂ during the Krebs Cycle.

  • The Electron Transport Chain (ETC) comprises a series of proteins located in the inner mitochondrial membrane.

    • These proteins facilitate the transfer of electrons and pump protons.
    • Electrons from NADH and FADH₂ travel through the ETC, enabling ATP production.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

More Like This

Use Quizgecko on...
Open
Browser
Browser