Lecture 7 Flashcards
Where does glucose come from
Photosynthesis
Where is the site of photosynthesis
The chloroplasts
Name the parts that make up the structure of the chloroplasts
Outer membrane
Inner membrane
Stroma
Thylakoid
Thylakoid space
Inner membrane space
Where do light reactions take place?
On the thylakoid membrane
What are photosystems?
Protein complexes on the thylakoid membrane that contain chlorophyll.
This chlorophyll is what absorbs light energy
What happens to light energy when it is absorbed in the thylakoid membrane.
The energy is passed to electrons and thus, high energy electrons leave the photosystem.
These high energy electrons then move through the Photosynthetic Electron Transport Chain
What does the Photosynthetic electron transport chain produce
NADPH, Oxygen and a H+ gradient
What is the purpose of creating an H+ gradient
The H+ gradient is used to produce ATP
What are the outputs of the light reaction
In the light reactions, light energy is converted into chemical energy
Outputs: ATP, NADPH, O2
What is the overall reaction equation for photosynthesis
6CO2 + 6H2O —> C6 H12 O6 + 6O2
What is the first step in the calvin cycle
Fixation of CO2 onto a 5 carbon molecule (RuBP - Ribulose Biphosphate).
This creates Six 3-carbon molecules (3-phosphoglycerate)
What happens after RuBP is converted into 6 low energy 3-Phosphoglycerate?
They are turned into G3P (Glceraldehyde-3-phosphate). This is a high energy molecule.
G3P is fixed with another G3P which then creates
What are the three stages of the Calvin cycle?
Fixation, Reduction, Regeneration
What is the endosymbiotic theory?
This theory explains the origins of Eukaryotes. It explains that chloroplasts and mitochondria were bacteria’s that were engulfed by procaryotes which then allowed for symbiosis and the evolution of plant and animal cells as we know them.
