Chapter 14 Flashcards
Do plant cells have cellular respiration
yuh
What type of pathway is photosynthesis?
Anabolic
Reduction reaction in photosynthesis
6CO2 -> C6H12O6 (glucose)
Oxidation reaction in photosynthesis
6H2O -> 6O2
High energy molecules in Photosynthesis
Glucose and Water
Site of light reactions
Thylakoids
site of the Calvin cycle
Stroma
What is the reducing agent used to synthesize carbohydrates from CO2
NADPH
Why is an input of ATP Required for regeneration?
to regenerate RuBP during the Calvin Cycle
What is Chlorophyll used for?
Harness E from the sun (breaks H2O molecules to use their electrons)
The function of a photosystem
convert absorbed light energy into the movement of electrons
Which photosystem comes first and why
Photosystem 2 because photosystem 1 was discovered first but photosystem 2 occurs first in the cycle
What does photosystem 1 do
splits water to retrieve electrons for ATP synthesis
What does photosystem 2 do
excited electrons to reduce NADP+
What does Photosystem 2 do
reduces NADPH to NADP+
What goes into producing 1 glucose
18 ATPs and 12 NADPH
what is chemiosmosis
movement of protons down channel to generate ATP via ATP synthase
Calvin’s cycle consists of
15 chemical reactions that synthesize carbohydrates from CO2
first step of Calvin cycle
carboxylation (CO2 is added to RuBP)
second step of Calvin cycle
reduction (energy and electrons from NADPH are transferred)
third step of Calvin cycle
regeneration of RuBP
What happens to excess carbohydrates
They are stored in the form of starch for energy when sunlight is absent
What is the percentage of yield of photosynthesis?
4% of sunlight is transformed into carbohydrates
