Photosisnthesis

Question 1

What are the ‘reactants’ (the ingredients) in photosynthesis?

Answer 1

During the process of photosynthesis plants break apart the reactants of carbon dioxide and water and recombine them to produce oxyge

Question 2

What are the ‘products’ of photosynthesis?

Answer 2

They use it to react carbon dioxide with water to make a sugar called glucose. The glucose is used in respiration, or converted into starch and stored. Oxygen is produced as a by-product. This process is called photosynthesis.

Question 3

What is the green chemical that makes the reaction happen?

Answer 3

Light energy is absorbed by the green chemical chlorophyll. This energy allows the production of glucose by the reaction between carbon dioxide and water

Question 4

Where is chlorophyll found?

Answer 4

Chlorophyll is found in the thylakoid sacs of the chloroplast . The chloroplast is a specialized part of the cell that functions as an organelle.

Question 5

How do you describe a reaction which requires an input of energy to get started?

Answer 5

This energy is called the activation energy. Activation energy is the minimum amount of energy that is needed to start a chemical reaction.

Question 6

What is the glucose made during photosynthesis used for?

Answer 6

Glucose made by the process of photosynthesis may be used in three ways: It can be converted into chemicals required for growth of plant cells such as cellulose.

Question 7

What is used for

Answer 7

• Some used un respiration
• Some stored as starch (which is soluble)
• Some used to produce fat or oil
• Some used to produce cellulose for cell walls
• Some used to produce amino acids for proteins

Question 8

Ways to increase the rate of photosynthesis:

Answer 8

• increase concentration of carbon dioxide
• increase the density of light
• increase the temperature