2.2.1 Photosynthesis : A kodak moment

Question 1

What is photosynthesis ?

Answer 1

A biochemical pathway

Question 2

What is the purpose of photosynthesis ?

Answer 2

For plants to get glucose from light energy

Question 3

What cells does photosynthesis occur in?

Answer 3

Plants, bacteria and protozoal cells

Question 4

What organelle does photosynthesis occur in?

Answer 4

chloroplasts

Question 5

What are the parts of the chloroplast and their functions?

Answer 5

Stroma - space outside the granum

Outer membrane

Inner membrane

Thylakoid - discs

Lamella

Granum - stacks of discs

Question 6

What is glucose and it’s function?

Answer 6

Glucose is a sugar, it can be broken down to form ATP . It makes glucose which is easy to store ( compared to ATP )

Glucose is used by plants for energy and to create their structure

Question 7

How is glucose created?

Answer 7

Chloroplasts harness energy from the sun to convert CO2 and water into glucose.

A byproduct is oxygen , which is released into the atmosphere.

By doing photosynthesis , they convert the CO2 in the atmosphere into oxygen

Question 8

Photosynthesis equation

Answer 8

12H2O + 6CO2 -> C6H12O6 + 6H2O+6O2

Question 9

What does the equation tell us for photosynthesis?

Answer 9

If we combine water molecules with carbon dioxide molecules we can make glucose and oxygen.

There is H2O on each side of the equation . Allowing the waters to cancel each other out . the new formula is

6H2O + 6CO2 -> C6H12O6 + 6O2