TOPIC 8: Photosynthesis Flashcards
All energy initially comes from ____
Photoasynthesis
What is an autotroph
An organism that can feed itselfs without relying on another organism
Examples of autotrophs
Producers
All chemotrophs are plants or prokaryotes
Prokaryotes
Where specifically does the light reaction happen?
On the thylakoid membrane
Thylakoids are stacked in structures called???
Grana
What does the light reaction do?
Split water,
release oxygen
Reduce NaDP+ H to NADPH
Generate atp from adp (by phosphophorylation)
What does the dark reaction do?
Fixation of carbon (or syntheses sugar)
Does photosynthesis reverse or revert the direction of electron flow?
Reverses
What are the two stages of photosynthesis
Light and dark rxn/calvin cycle
Where does the dark reaction tage place?
In the stroma (space inside chloroplast)
What two energy sources made by the light reaction is needed to drive the calvin cycle
ATP and NADPH
What is the thylakoid space called
Thylakoid lumen
A high transmittance (low absorption) indicates that chlorophyl will absorb lots of green light. Is this true
No, low absorption rate means that chlorophyll absorbs LITTLE GREEN LIGHT
What wavelengths of light are the most effective for photosynthesis?
Violet-blue and red wavelengths of light
