Photosynthesis Flashcards
What type of energy is light?
Electromagnetic
Pigment
Organic molecule that reflects light of certain wavelength
Where does photosynthesis occur
Membrane of thylakoids
Stats of thylakoids are granum used to maximum surface area for allowing Max number of pigments to be present
Chlorophyll a vs chlorophyll b
A is considered to be the reaction center of photosynthetic unit
B is an antenna pigment
Accessory pigment
Pigments in addition to chlorophyll which are not green
What are the accessory pigments
B- carotene
Xanthophyll
Phycocyanin
Phycoerythein
What is the chemical characteristic common in all pigments?
Double bonds
Reaction center
Chlorophylla is at the middle of photosystem
The pigment surrounding chlorophyll a is chlorophyll b
Which structural proteins make up the lightharvesting complex
Chlorophyll b
B-carotene
Xanthophyll
Phycoayanin
Phycoerythrin
Protein
What fluid is surrounding?
Stroma
Photo oxidation
The energy absorbed by e must match the difference between ground state and higher energy level
If this met the e is excited and promoted to higher energy level
What happens when more electronegative atom is hear by during photo oxidation?
The excited e is lost to more electronegative atom
So the original pigment has been oxidized
What happens when not enough energy is absorbed
Photon is not absorbed but reflected
Light that is emitted is called fluorescence
Absorption spectrum
Graph plotting the relative absorption of various pigments of each wavelength of visible light
Action section
Graph plotting relative effectiveness of photosynthesis at each wavelength of visible light
