TOPIC/OBJECTIVE: Photosynthesis
NAME: Paris Harris
CLASS/PERIOD: Biology 3rd Period
DATE: 09/15/21
ESSENTIAL QUESTION: What is photosynthesis and how does it happen?
QUESTIONS:
NOTES:
Where do we get our
energy from?
Vocabulary:
Synthesize = to make something
Photo = light
Chemical Energy = ATP and ADP
Adenosine Triphosphate or ATP (currency of living organisms) = the molecule that transfers
energy
Adenosine Diphosphate or ADP = lower energy molecule converted to ADP with the addition
of phosphate
Photosynthetic Organisms
Photosynthesis = the process that captures light from the sun and converts it to sugars
(glucose) for the plant to use
- Oxygen is like the remainder
Photosynthesis in Chloroplast
Leaves = collect light
Chloroplast = organelle in leaves that takes the light energy in
Thylakoids (where the chlorophyll actually is) = pancake stacks collect the light energy
Stroma = space in chloroplast outside thylakoids where Calvin Cycle happens
(light-independent)
Photosynthesis = Light Dependent Reaction
Inside the thylakoids this photosynthetic reaction takes place, can you explain the products and
reactants?
Calvin Cycle = light independent reaction
● The Calvin cycle can occur at night
● Occurs in stroma
● Inputs : ATP + NADPH (products of light reactions) + 𝐶𝑂
● Outputs: ADP + NADP + G3P
2
Key Terms:
- Carbon fixation
- Glyceraldehyde -3- phosphate (G3P)
SUMMARY: Photosynthesis is the process through which a plant, which is an example of an autotroph, transforms sunlight
into sugar. Sugar is the plant's primary source of nutrition. The light reaction occurs in the chloroplast's thylakoid membrane.
Light independence is explained by the Calvin Cycle, which utilizes glucose to create ATP without the presence of light.
2
2
6
12 6
2
Photosynthesis is a process that happens solely in plants, and it has the formula 6𝐶𝑂 + 6𝐻 𝑂 → 𝐶 𝐻 𝑂 + 6𝑂 .