PhotosynthesisStandard 7.1d

Students know… that chloroplasts capture sunlight energy for photosynthesis

ObjectivesAt the end of this lesson students will:

• Be able to identify organisms that can carry out photosynthesis and those that cannot.

• Be able to explain the process of photosynthesis.

• Be able to name the reactants and products of photosynthesis.

You all know plants use

carbon dioxideand give us oxygen but

there is moreto the story…

Definition Photosynthesis is a series of

chemical reactions carried out by plants where energy from the sun is used to make glucose and oxygen.

CFU: What is photosynthesis?CFU: What is made during photosynthesis?

Inside the Plant Cells

Plant cells contain special organelles called chloroplasts. This is where photosynthesis takes place.

Chloroplasts contain the green substance chlorophyll which is responsible for collecting energy from the sun and making plants appear green.

CFU: Where does photosynthesis occur?CFU: Are chloroplasts found in animal cells?CFU: What is the substance in the chloroplastthat collects energy from the sun?

Which organisms can carry out

photosynthesis??

CFU: How do you know?

Now you try….

On your whiteboard write down which organismyou think can carry out photosynthesis…

A. B.CFU: How do you know??

Lets do one more…

On your whiteboard write down which organism you think can carry out photosynthesis…

A. B.

CFU: How do you know?

Carbon Dioxide

Sunlight

Water

Together theyreact in the chloroplast

GLUCOSEOXYGEN

CFU: Where does the water come from?CFU: Where does the carbon dioxide come from?

Photosynthesis

sunlight + CarbonDioxide

+ water Glucose + Oxygen

CFU: What are the substances that react (reactants)?CFU: What are the products of the reaction?CFU: How does photosynthesis benefit humans?

Reactants Products

Cellular RespirationStandard 7.1d

Students know that mitochondria liberate energy for the work that cells do…

ObjectivesAt the end of this lesson students will:

• Be able to explain the process of cellular respiration.

• Be able to name the reactants and products of cellular respiration.

• Be able to explain how photosynthesis and cellular respiration are related.

Remember In the last lesson we learned that

photosynthesis is a series of chemical reactions carried out by plants where energy from the sun is used to make glucose and oxygen.

Photosynthesis

sunlight + CarbonDioxide

+ water Glucose + Oxygen

CFU: What are the substances that react (reactants)?CFU: What are the products of the reaction?CFU: How does photosynthesis benefit humans?

Reactants Products

Definition• Animal cells make usable energy

through cellular respiration.

• Cellular respiration is a series of chemical reactions that transforms the energy in food molecules into usable cellular energy.

CFU: How do animal cells make energy?CFU: Where does the energy come from?

• Cell energy is called adenosine triphosphate or ATP.

• ATP is the only form of energy a cell can use.

What is Cell Energy?

CFU: What is the name for cell energy?

In the Animal Cell Cellular respiration occurs in the mitochondria.

In the mitochondria glucose and oxygen are combined to create water, carbon dioxide, and ATP (energy).

CFU: Where does cellular respiration occur?CFU: What is ATP?

The Process of CellularRespiration

+Glucose Oxygen Water +CarbonDioxide + ATP

Source of energy

Gas used torelease energy

Wasteproduct

Cell energyProduct for othercell activities

CFU: What are the two substances that react (reactants)?CFU: What are the products of the reaction?CFU: What product is useful to plants? How?CFU: Where does this reaction occur?