Photosynthesis and Respiration. What you will learn: Photosynthesis and Cellular Respiration are complementary processes that depend on each other

PhotosynthesisPhotosynthesisandand

RespirationRespiration

What you will learn:• Photosynthesis and Cellular Respiration

are complementary processes that depend on each other.

Photosynthesis Reaction

What is the equation for photosynthesis?

carbon dioxide + water + energy glucose + oxygen

6CO2 + 6H2O + energy C6H12O6 + 6O2

Photosynthesis Reaction

This is why plants produce oxygen.

6CO2 + 6H2O + energy C6H12O6 + 6O2

This is why plants breathe in carbon dioxide.

This is why plants need water.

This is why plants need sunlight.

This is why we can eat plants to get energy.

Where Does it Occur?

Photosynthesis

• Occurs in the Chloroplast

• Chloroplasts contain chlorophyll. the green pigment that can trap sunlight.

• Plants, algae, and certain bacteria contain these chloroplasts.

Visual Summary 6.3

Glucose Oxygen Water Energy

Equation for Cellular Respiration

Glucose Oxygen Water Energy

Equation for Cellular RespirationThis is why we eat. Plants don’t eat; they make this with sunlight.

This is why we breathe oxygen.

This is why we breathe out carbon dioxide.

The water we can use.

The energy released from the glucose is stored in molecules of ATP for later use.

Carbon Dioxide

Where Does it Occur?

Cellular Respiration

• Occurs in the mitochondria

• Here the energy released from glucose is stored in ATP molecules.

• Most organisms have these.

Respiration vs. PhotosynthesisRespiration vs. Photosynthesis

Photosynthesis and respiration are complementary processes in the living world. They are opposite processes, and neither can exist without the other.


Photosynthesis uses carbon dioxide, water, and the energy of sunlight to produce glucose (sugar) and oxygen.


Respiration is a process that uses oxygen and glucose to

form Carbon dioxide, water and energy.


In respiration, organisms obtain the energy that they need to survive from the food that plants produced.

Cellular Respiration -vs- Cellular Respiration -vs- PhotosynthesisPhotosynthesis

Photosynthesis Respiration

Organisms Plants, algae, some bacteria

Most organisms (Including plants)

Needed CO2, H2O, chlorophyll, sun

Glucose, O2

Produced Glucose, O2 CO2, H2O, ATP

When occurs daylight night and day

Where occurs Chloroplast in cell Mitochondria of cell

SUMMARY OF KEY CONCEPTS

Sunlight

Heat

PhotosynthesisCellular

respiration

Review Question # 1

1. What of these is not needed for photosynthesis?

A. carbon dioxide

B. oxygen

C. water

D. energy

Review Question # 1

1. What of these is not needed for photosynthesis?

A. carbon dioxide

B. oxygen

C. water

D. energy

Review Question # 2

2. Respiration happens inA. animals

B. plants

C. neither plants nor animals

D. both plants and animals

Review Question # 2

2. Respiration happens in

A. animals

B. plants

C. neither plants nor animals

D. both plants and animals

Review Question # 3

3. In respiration the released energy is stored in molecules of

A. glucose

B. DNA

C. carbon dioxide

D. ATP

Review Question # 3

3. In respiration the released energy is stored in molecules of

A. glucose

B. DNA

C. carbon dioxide

D. ATP

Review Question # 4

4. Which statement about photosynthesis is most correct?A. The reaction is exothermic.B. Energy is required to construct the glucose molecules.C. Energy is released in the reaction.D. ATP molecules are used to start the reaction.

Review Question # 4

4. Which statement about photosynthesis is most correct?A. The reaction is exothermic.B. Energy is required to construct the glucose molecules.C. Energy is released in the reaction.D. ATP molecules are used to start the reaction.

Review Question # 5

5. Which statement about respiration is not correct?A. The reaction is exothermic.B. Energy is required to construct the glucose molecules.C. Energy is released in the reaction.D. Energy released is used to create ATP molecules.

Review Question # 5

5. Which statement about respiration is not correct?A. The reaction is exothermic.B. Energy is required to construct the glucose molecules.C. Energy is released in the reaction.D. Energy released is used to create ATP molecules.

Review Question # 6

6. Which chemical is not a product of respiration?

A. carbon dioxide

B. ATP

C. oxygen

D. water

Review Question # 6

6. Which chemical is not a product of respiration?

A. carbon dioxide

B. ATP

C. oxygen

D. water

Review Question # 7

7. Chlorophyll

A. makes glucose

B. traps sunlight energy

C. produces oxygen

D. produces carbon dioxide

Review Question # 7

7. Chlorophyll

A. makes glucose

B. traps sunlight energy

C. produces oxygen

D. produces carbon dioxide

Review Question # 8

8. Where does respiration happen?

A. in the mitochondria

B. in ATP

C. in the chloroplast

D. in glucose molecules

Review Question # 8

8. Where does respiration happen?

A. in the mitochondria

B. in ATP

C. in the chloroplast

D. in glucose molecules

Review Question # 9

9. We breathe oxygen because

A. it is needed to make glucose molecules.

B. it is needed to make ATP molecules.

C. it is needed to break apart ATP molecules.

D. it is needed to break apart glucose molecules.

Review Question # 9

9. We breathe oxygen because

A. it is needed to make glucose molecules.

B. it is needed to make ATP molecules.

C. it is needed to break apart ATP molecules.

D. it is needed to break apart glucose molecules.

Review Question # 10

10. Which is the correct formula for photosynthesis?A) C6H12O6 + 6O2 + energy 6CO2 + 6H2O

B) 6CO2 + 6H2O C6H12O6 + 6O2 + energy

C) 6CO2 + 6H2O + energy C6H12O6 + 6O2

D) C6H12O6 + 6O2 6CO2 + 6H2O + energy


10. Which is the correct formula for photosynthesis?A) C6H12O6 + 6O2 + energy 6CO2 + 6H2O





11. Which is the correct formula for cellular respiration?A) C6H12O6 + 6O2 + energy 6CO2 + 6H2O





11. Which is the correct formula for cellular respiration?A) C6H12O6 + 6O2 + energy 6CO2 + 6H2O





12. Which statement best shows the relationship between photosynthesis and cellular respiration?A) They both need the same reacting chemicals.

B) They both produce the same products.

C) They are opposite processes, each needing the other’s products.

D) They are opposite processes, each needing oxygen to occur.


12. Which statement best shows the relationship between photosynthesis and cellular respiration?A) They both involve oxygen as a part of the chemical reaction.

B) They both are processes involving energy.

C) They are opposite processes, each needing the other’s products.

D) They are opposite processes, each needing oxygen to occur.

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Photosynthesis and Respiration. What you will learn: Photosynthesis and Cellular Respiration are complementary processes that depend on each other