Photosynthesis and Cellular Respiration Quiz
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Questions and Answers

What is the main product of photosynthesis?

  • Glucose (correct)
  • Oxygen
  • ATP
  • Carbon dioxide

In which part of the chloroplast does the light-dependent reaction occur?

  • Cytoplasm
  • Stroma
  • Thylakoid membrane (correct)
  • Mitochondria

What is the main purpose of the Calvin cycle?

  • To make glucose (correct)
  • To produce oxygen
  • To release ATP
  • To absorb sunlight

Which stage of cellular respiration produces the most ATP?

<p>Electron transport chain (B)</p> Signup and view all the answers

What molecule is broken down during glycolysis?

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

What gas is taken in by plants during photosynthesis?

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

Which pigment is primarily responsible for capturing light in photosynthesis?

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

What is the name of the cycle that occurs during photosynthesis to produce sugar?

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

What happens to water molecules in the light-dependent reactions?

<p>They are split into oxygen, protons, and electrons. (B)</p> Signup and view all the answers

What is the main energy source for cellular respiration?

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

Which molecule is both a reactant in photosynthesis and a product of cellular respiration?

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

Where does glycolysis take place?

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

What are the products of the Krebs cycle?

<p>ATP, NADH, FADHâ‚‚, and carbon dioxide (C)</p> Signup and view all the answers

What is the role of RuBisCO in photosynthesis?

<p>Fixes carbon dioxide into organic molecules (B)</p> Signup and view all the answers

What is the function of stomata in plants?

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

What is the main output of the light-dependent reactions?

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

Which stage of cellular respiration produces water?

<p>Electron transport chain (B)</p> Signup and view all the answers

What energy transformation occurs during cellular respiration?

<p>Chemical to usable energy (ATP) (C)</p> Signup and view all the answers

What is the main purpose of aerobic respiration?

<p>To convert glucose into usable energy (ATP) (D)</p> Signup and view all the answers

Which stage of aerobic respiration occurs in the mitochondria?

<p>Both Krebs cycle and electron transport chain (B)</p> Signup and view all the answers

What happens to the oxygen used in aerobic respiration?

<p>It combines with electrons and hydrogen ions to form water (D)</p> Signup and view all the answers

How many molecules of ATP are produced during aerobic respiration from one glucose molecule?

<p>36-38 (A)</p> Signup and view all the answers

What role does the electron transport chain play in aerobic respiration?

<p>It produces a proton gradient to generate ATP (A)</p> Signup and view all the answers

Which is true about aerobic respiration compared to anaerobic respiration?

<p>Aerobic respiration produces more ATP than anaerobic respiration (A)</p> Signup and view all the answers

What is the function of NADH in cellular respiration?

<p>To carry high-energy electrons to the electron transport chain (A)</p> Signup and view all the answers

Which process is anaerobic?

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

What is the main product of fermentation in muscle cells?

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

How is energy stored in ATP?

<p>In the bond between the second and third phosphate groups (D)</p> Signup and view all the answers

What drives the ATP synthase in the electron transport chain?

<p>Proton gradient across the membrane (A)</p> Signup and view all the answers

Which step of cellular respiration is oxygen directly involved in?

<p>Electron transport chain (B)</p> Signup and view all the answers

What process provides energy for muscle activity when oxygen is scarce?

<p>Lactic acid fermentation (A)</p> Signup and view all the answers

What happens during photolysis in photosynthesis?

<p>Water is split into oxygen, electrons, and protons. (C)</p> Signup and view all the answers

How do plants obtain carbon dioxide?

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

Which stage of photosynthesis uses ATP and NADPH?

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

What is the main purpose of cellular respiration?

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

Which type of organism performs both photosynthesis and cellular respiration?

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

What are the products of the light-dependent reactions of photosynthesis?

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

What happens to pyruvate before entering the Krebs cycle?

<p>It is converted into acetyl-CoA. (A)</p> Signup and view all the answers

What happens during chemiosmosis in the mitochondria?

<p>ATP is produced by ATP synthase using a proton gradient. (C)</p> Signup and view all the answers

What is the net ATP gain from glycolysis?

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

Flashcards

Photosynthesis main product

The process in plants that uses sunlight to produce glucose from carbon dioxide and water.

Light-dependent reaction location

The part of photosynthesis where light energy is converted to chemical energy in the thylakoid membrane of chloroplasts.

Glycolysis input

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

Calvin Cycle function

The stage of photosynthesis in which glucose is produced from carbon dioxide using energy from the light-dependent reactions.

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ATP production in cellular respiration

The electron transport chain produces the majority of ATP during cellular respiration. It uses the energy from electrons to create a gradient and then harness the energy to generate ATP.

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Energy source in photosynthesis

Sunlight is the initial energy source for photosynthesis.

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Krebs cycle location

The Krebs cycle occurs in the mitochondrial matrix.

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Photosynthesis carbon source

Carbon dioxide is taken in(absorbed) by plants during photosynthesis.

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Light-dependent reactions water molecules

Water molecules are split into oxygen, protons, and electrons in the light-dependent reactions of photosynthesis.

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NADPH in photosynthesis

NADPH carries high-energy electrons, which are crucial for the energy-dependent reactions of photosynthesis.

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Glycolysis Location

Glycolysis occurs in the cytoplasm of a cell.

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Photosynthesis/Respiration Reactant

Carbon dioxide is a reactant in photosynthesis and a product of cellular respiration.

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Cellular Respiration: Glucose Fate

Glucose is broken down to release energy during cellular respiration.

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Plant Stomata Function

Stomata are responsible for gas exchange in plants.

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ATP Production Location (mostly)

Mitochondria are primarily responsible for ATP production in the cell.

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Cellular Respiration Energy Source

Glucose is the primary energy source for cellular respiration.

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How do plants get CO2?

Plants absorb carbon dioxide through small openings called stomata on their leaves.

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Photosynthesis stage using ATP/NADPH

The Calvin cycle, the second stage of photosynthesis, uses ATP and NADPH generated during light-dependent reactions to convert carbon dioxide into glucose.

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Purpose of Cellular Respiration

Cellular respiration is the process that breaks down glucose to produce ATP (energy) for the cells.

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Photosynthesis Organism

Plants are organisms that perform both photosynthesis and cellular respiration.

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Light-dependent products

The light-dependent reactions of photosynthesis produce ATP, NADPH, and oxygen.

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Pyruvate conversion before Krebs

Before entering the Krebs cycle, pyruvate is converted into acetyl-CoA.

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Electron carriers for ETC

NADH and FADHâ‚‚ carry high-energy electrons to the electron transport chain in cellular respiration.

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Water's role in photosyn.

Water provides electrons and protons for the light-dependent reactions of photosynthesis.

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NADH's role

NADH carries high-energy electrons to the electron transport chain, where they are used to generate ATP.

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Anaerobic process

A process that occurs without the presence of oxygen. Glycolysis is an example of an anaerobic process.

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Fermentation in muscles

Muscle cells produce lactic acid during fermentation, which happens when oxygen is scarce.

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ATP's energy storage

ATP stores energy in the bond between its second and third phosphate groups.

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What drives ATP synthase?

A proton gradient across the membrane, created by the electron transport chain, drives the ATP synthase.

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Calvin cycle's product

The Calvin cycle produces glucose, using energy from the light-dependent reactions.

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Oxygen's role in respiration

Oxygen is directly involved in the electron transport chain, acting as the final electron acceptor.

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ATP's use in cells

Cells use ATP as the primary energy currency to power cellular work.

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Cellular Respiration Product

Cellular respiration is a process that breaks down glucose to create energy in the form of ATP. One of the main byproducts of this process is water. Water is formed in the final stage of cellular respiration: the electron transport chain.

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Cellular Respiration: Energy Conversion

Cellular respiration converts chemical energy stored in glucose into a usable form of energy called ATP. This energy is then used by cells to perform various functions.

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Aerobic Respiration: Main Purpose

Aerobic respiration is a process that uses oxygen to efficiently break down glucose, producing a significant amount of ATP. The main purpose is to generate a usable form of energy for the cell's activities.

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Aerobic Respiration Requirements

For aerobic respiration to occur, the cell needs glucose as the energy source and oxygen as the final electron acceptor.

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Aerobic vs Anaerobic: ATP Production

Aerobic respiration produces a much larger amount of ATP than anaerobic respiration, making it a more efficient energy production process.

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Aerobic Respiration Location

Aerobic respiration primarily occurs in the mitochondria, specifically in the matrix and the inner membrane.

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Electron Transport Chain Role

The electron transport chain in aerobic respiration is the final stage where a proton gradient is established. The energy from the gradient is then used to produce ATP.

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Aerobic Respiration Byproducts

Aerobic respiration produces carbon dioxide and water as byproducts. These are released as waste products from the cell.

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Study Notes

Photosynthesis and Cellular Respiration

  • Photosynthesis is the process by which plants convert light energy into chemical energy (glucose).
  • The main product of photosynthesis is glucose.
  • The main input for photosynthesis is carbon dioxide.
  • The light-dependent reactions occur in the thylakoid membrane of the chloroplast.
  • The Calvin cycle occurs in the stroma of the chloroplast.
  • The main purpose of the Calvin cycle is to produce glucose.
  • The source of energy for photosynthesis is sunlight.
  • Chlorophyll is the primary pigment responsible for capturing light energy in photosynthesis.
  • Chlorophyll is found in the thylakoid membrane of the chloroplast.
  • Plants are the primary organisms that perform photosynthesis.
  • Cellular respiration is the process by which cells break down glucose to release energy in the form of ATP.
  • The main reactant in cellular respiration is glucose.
  • The main products of cellular respiration are ATP, carbon dioxide, and water.
  • Glycolysis is the first stage of cellular respiration and occurs in the cytoplasm.
  • The Krebs cycle occurs in the mitochondrial matrix.
  • The electron transport chain occurs in the inner mitochondrial membrane.
  • The electron transport chain produces the most ATP.
  • The Krebs cycle produces ATP, NADH, and FADH2
  • The final electron acceptor in cellular respiration is oxygen.
  • ATP is the main energy carrier in cells.
  • Mitochondria are the organelles responsible for cellular respiration.
  • Stomata in plants are responsible for gas exchange.

Additional Questions and Answers

  • Question 1: What is the main product of photosynthesis?
    • Answer: Glucose.
  • Question 2: In which part of the chloroplast does the light-dependent reaction occur?
    • Answer: Thylakoid membrane.
  • Question 3: What molecule is broken down during glycolysis?
    • Answer: Glucose.
  • Question 4: What is the main purpose of the Calvin cycle?
    • Answer: To make glucose.
  • Question 5: Which stage of cellular respiration produces the most ATP?
    • Answer: Electron transport chain.
  • Question 6: What is the source of energy for photosynthesis?
    • Answer: Sunlight.
  • Question 7: Where does the Krebs cycle occur?
    • Answer: Mitochondrial matrix.
  • Question 8: What gas is taken in by plants during photosynthesis?
    • Answer: Carbon dioxide.
  • Question 9: What is the name of the enzyme that helps produce ATP during the electron transport chain?
    • Answer: ATP synthase.
  • Question 10: What is the main energy carrier in cells?
    • Answer: ATP.
  • Question 11: Which pigment is primarily responsible for capturing light in photosynthesis?
    • Answer: Chlorophyll.
  • Question 12: Which organism performs photosynthesis?
    • Answer: Plants.
  • Question 13: What are the reactants in cellular respiration?
    • Answer: Oxygen and glucose.
  • Question 14: What gas is a byproduct of photosynthesis?
    • Answer: Oxygen.
  • Question 15: What is the name of the cycle that occurs during photosynthesis to produce sugar?
    • Answer: Calvin cycle.
  • Question 16: Which step occurs first in cellular respiration?
    • Answer: Glycolysis.
  • Question 17: What molecule acts as the final electron acceptor in cellular respiration?
    • Answer: Oxygen.
  • Question 18: What powers the light-dependent reactions?
    • Answer: Sunlight.
  • Question 19: Which organelle is responsible for photosynthesis?
    • Answer: Chloroplast.
  • Question 20: What happens to water molecules in the light-dependent reactions?
    • Answer: They are split into oxygen, protons, and electrons.
  • Question 21: What is the role of NADPH in photosynthesis?
    • Answer: To carry high-energy electrons.
  • Question 22: Where does glycolysis take place?
    • Answer: Cytoplasm.
  • Question 23: Which molecule is both a reactant in photosynthesis and a product of cellular respiration?
    • Answer: Carbon dioxide.
  • Question 24: What happens to glucose during cellular respiration?
    • Answer: It is broken down to release energy.
  • Question 25: What is the function of stomata in plants?
    • Answer: Gas exchange.
  • Question 26: Which part of the cell is responsible for most ATP production?
    • Answer: Mitochondria.
  • Question 27: What is the main energy source for cellular respiration?
    • Answer: Glucose.

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Photosynthesis and Cellular Respiration Past Paper PDF

Description

Test your knowledge on the processes of photosynthesis and cellular respiration. This quiz covers key concepts such as the light-dependent reactions, the Calvin cycle, and the role of glucose and ATP. Understand how plants convert light energy into chemical energy and how cells utilize that energy.

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