Unit 1: Topic Six
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
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Photosynthesis is the _______ redox reaction of aenerobic respiration, the ______ covalent bonds are ______ and the _______ covalent bonds are formed.
Reverse Polar Broken Non-polar Formed
CO2 is being ________ to glucose, and the electrons are moving _______.
Reduced Closer to the carbon atoms in glucose
H2O is being _______ into oxygen, and the electrons are moving ______.
Oxidized Farther away from the oxygen atoms in O2
List the structures of the chlorophlast:
3 membranes: Outer, Inner Thylakoid Two Spaces: Stroma, Thylakoid lumen
What are the two main divisions of the process of photosynthesis?
1) Light reaction(light dependent)solar light into chemical energy(ATP, NADH) 2) Clavin cycle (light independent)chemical energy to build carbohydrates.
How is light absorbed in a molecule?
Photons are absorbed by a specific pigment molceule, which allows the electron to move fro it’s ground to excited state.
If a pigment is not an _____ ______ to it’s photon, then the electron will ______ get excited.
Exact match not
Blue(450) raises e _ energy level(s) Green(550) will ____ raise an e Red(700) raises e _ energy level(s)
2 not 1
What are the main pigments in most photouautotrophs?
Cholorophyls, which are embedded in the thylakoid membrane.
What are cartenoids?
Accesorry pigments that extend the range of wavelength energy absorption.
Pigments are organized into _____ with proteins called ____.
Complexes Photosystems(light harvesting complexes)
Antenna pigments:
Groups of pigments around the reaction centre that when excited channel energy to the reaction centre.
Energy moves from _______ ________ until it reaches the _______ ________ after being excited by solar light.
Antenna Pigments Reaction Centre
Step of PS2:
P680 reduces its primary electron accepto which passes the electron to photoquinone(PQ)
Energy moves through _____ _________.
Inductive resonance
The reaction centre donates a _______ to the _______.
Electron Primary electron acceptor
What is the reaction centre in photosystem 2?
P680, where energy from light first travels.
Step 2 of PS2:
PQ(hydrophobic) grabs H+ from the strum when reduced.
Step 3 of PS2:
PA reduces the cytochrome complex and release the H+ in the lumen.
Step 4 of PS2:
Cytochrome reduces plastocyanin(Hydrophilic), that passes the elctron to p700+ at PS1. P680+ replaces its electron by splitting h2o at the oxygen evolving complex.
Step 3 of PS1:
NADP+ reductase will reduce NADP+ to NADPH, P700 replaces its electron by accepting one from plastogylcyanin.
What is the reaction centre in photosystem 1?
P700, solar energy from antenna pigments.
Step 1 of PS1:
P700 reduces the primary electron acceptor whcih passes the elctron to feredoxin
Step 2 of PS1
Feredoxin(Hydrophilic) reducea NADP+ reductase in the stroma.