CELLULAR RESPIRATION

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CELLULARRESPIRATION
2
INTRODUCTION

• All cells must have energy to function.
• Glucose is a cells source of energy. In other
  words, glucose is cell food.
• Glucose is often stored in organisms as a
  carbohydrate called starch.

3
INTRODUCTION

• Many glucose molecules link together in order to
  from one starch molecule.
• In order to use starch, cells must break it down
  into the smaller glucose molecules.

4
INTRODUCTION

• Usable chemical energy is stored in the bonds of
  glucose molecules.
• Cells can release energy in 2 basic processes
  Cellular respiration and Fermentation.

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CELLULAR RESPIRATION

• In cellular respiration, cells use oxygen to
  release energy stored in the bonds of glucose
  molecules.
• Most of the energy used by the cells in your body
  is provided by cellular respiration.

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LOCATION

• Cellular respiration takes place in organelles
  called mitochondria.
• Both plant cells and animal cells contain
  mitochondria, so both plant and animal cells
  release energy through cellular respiration.

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A CHEMICAL CHANGE

• Reactants
• Glucose (C6H12O6) from food
• Oxygen (O2) from the air

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A CHEMICAL CHANGE

• Chemical Reaction
• Glucose molecules in the cytoplasm are broken
  down into smaller molecules.
• These smaller molecules enter the mitochondria
  along with oxygen, where they recombine to form
  new substances

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A CHEMICAL CHANGE

• Products
• Energy some transferred to other molecules and
  sent to areas of the cell that need it some
  released as heat.
• Carbon Dioxide (CO2) released into the air
• Water (H2O) used by the organism

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THE EQUATION

• Glucose Oxygen
• Energy Water Carbon Dioxide

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PUTTING IT ALL TOGETHER
CARBON DIOXIDE
GLUCOSE
MITOCHONDRION
ENERGY
OXYGEN
WATER
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Cellular Respiration Review
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What type of cell performs cellular respiration?

1. Plant cells
2. Animal cells
3. Both plant and animal cells

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Why do plant and animal cells perform cellular
respiration?

1. To release energy stored in glucose molecules
2. To release energy stored in water molecules
3. To release oxygen and glucose

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What part of plant and animal cells does cellular
respiration occur in?

1. Chloroplasts
2. Mitochondria
3. Nucleus

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What does a cell need for cellular respiration?

1. Carbon dioxide and water
2. Oxygen and water
3. Glucose and oxygen

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What is produced during cellular respiration?

1. Usable energy, carbon dioxide and water
2. Usable energy and water
3. Usable energy, carbon dioxide and glucose

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