3.3 Photosynthesis

The "photo" of photosynthesis means "light". What does "synthesis" mean?

• to use in a chemical reaction

• to break apart

• to make or put something together

What is the end result of photosynthesis?

• The creation of water

• The creation of glucose (sugar)

• The creation of carbon dioxide

Which of these below are the reactants ("ingredients") of photosynthesis? Choose all that apply.

• glucose

• water

• carbon dioxide

• oxygen

Which of these below are the products ("results") of photosynthesis? Choose all that apply.

• glucose

• water

• carbon dioxide

• oxygen

In which organelle does photosynthesis take place?

What happens when a plant is exposed to sunlight? Choose the best answer.

• sunlight is absorbed by chlorophyll

• sunlight is repelled

• water leaves the plant

• carbon dioxide is absorbed by chlorophyll

Which of these statements describe what happens to water once it is absorbed by a plant during photosynthesis?

• water is used for growth

• water is consumed

• water is split (broken apart)

During the light reactions of photosynthesis ATP and NADPH are created. What is the purpose of these two molecules?

• absorbed into the plant

• convert into glucose (sugar)

• restart the light dependent reactions

• carry energy needed in the dark reactions

The light-independent reactions require a lot of energy to create glucose from carbon dioxide. Where does this energy come from?

• energy comes from the products of the light reactions

• energy comes from the absorbed sunlight

• energy comes from carbon dioxide

During the light independent reactions, glucose (sugar) is created by changing the chemical structure of:

• a water molecule

• the energy carrying molecules

• carbon dioxide absorbed by the plant