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CELLULAR RESPIRATION

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CELLULAR RESPIRATION INTRODUCTION All cells must have energy to function. Glucose is a cell s source of energy. In other words, glucose is cell food. – PowerPoint PPT presentation

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Title: CELLULAR RESPIRATION


1
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.

5
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.

6
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.

7
A CHEMICAL CHANGE
  • Reactants
  • Glucose (C6H12O6) from food
  • Oxygen (O2) from the air

8
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

9
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

10
THE EQUATION
  • Glucose Oxygen
  • Energy Water Carbon Dioxide

11
PUTTING IT ALL TOGETHER
CARBON DIOXIDE
GLUCOSE
MITOCHONDRION
ENERGY
OXYGEN
WATER
12
Cellular Respiration Review
13
What type of cell performs cellular respiration?
  1. Plant cells
  2. Animal cells
  3. Both plant and animal cells

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14
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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15
What part of plant and animal cells does cellular
respiration occur in?
  1. Chloroplasts
  2. Mitochondria
  3. Nucleus

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16
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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17
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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