Photosynthesis at Aston University | Flashcards & Summaries

Lernmaterialien für photosynthesis an der Aston University

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What happens in the light dependent reaction
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Photons hit chlorophyll and absorbs light energy by photoionisation
The photoexcited electron rise in energy levels meaning the chlorophyll is oxidised
The electrons pass through the electron transport chain releasing energy in redox reactions in the thylakoid membrane
The energy released forms a proton gradient as the proton pump pumps hydrogen ions from the stroma to the thylakoid space
Hydrogen ions diffuse through ATP synthase by photophosphorylation from ADP and Pi
Photolysis of water produces 2 protons, 2 electrons and half oxygen
NADP is reduced by electrons 
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What are 2 uses of ATP 
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-Provides energy. Active transport, protein synthesis 
- Phosphorylation. Lowers the activation energy, alters the tertiary structure, makes the molecules more reactive
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Photophosphorylation 
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ATP production in LDR
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thylakoid 
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Flattened membrane bound sacs found in the chloroplast
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Granum
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Stack of thylakoids

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What’s NADP
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Nicotinamide adenine dinucleotide phosphate 
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Limiting factors of photosynthesis 
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Temperature, carbon dioxide concentration and light intensity/ wavelength
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How is chlorophyll reduced
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The electrons from photolysis replace those lost by the chlorophyll
The hydrogen ion and electron reduces NADP to make NADPH
The evolved oxygen is released as a useful waste product
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TESTE DEIN WISSEN

Adding a phosphate to ADP is known as?

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Phosphorylation

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What does ATP provide cells with

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Small packets of energy

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why is ATP useful

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1. Releases energy in small / 
manageable amounts; 
2. (Broken down) in a one- 
step / single bond broken;

3. Immediate energy 
compound / makes energy available rapidly;

4. Phosphorylates / adds phosphate;

5. Makes (phosphorylated 
substances) more reactive / 
lower activation energy;

6. Quickly reformed / made
again;

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What is NADP in the LIR

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NADPH provides reducing power within reactions as it loses this hydrogen, becoming re oxidised to NADP.in the light independent stage

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  • 3 Lernmaterialien

Beispielhafte Karteikarten für deinen photosynthesis Kurs an der Aston University - von Kommilitonen auf StudySmarter erstellt!

Q:
What happens in the light dependent reaction
A:
Photons hit chlorophyll and absorbs light energy by photoionisation
The photoexcited electron rise in energy levels meaning the chlorophyll is oxidised
The electrons pass through the electron transport chain releasing energy in redox reactions in the thylakoid membrane
The energy released forms a proton gradient as the proton pump pumps hydrogen ions from the stroma to the thylakoid space
Hydrogen ions diffuse through ATP synthase by photophosphorylation from ADP and Pi
Photolysis of water produces 2 protons, 2 electrons and half oxygen
NADP is reduced by electrons 
Q:
What are 2 uses of ATP 
A:
-Provides energy. Active transport, protein synthesis 
- Phosphorylation. Lowers the activation energy, alters the tertiary structure, makes the molecules more reactive
Q:
Photophosphorylation 
A:
ATP production in LDR
Q:
thylakoid 
A:
Flattened membrane bound sacs found in the chloroplast
Q:
Granum
A:
Stack of thylakoids

Mehr Karteikarten anzeigen
Q:
What’s NADP
A:
Nicotinamide adenine dinucleotide phosphate 
Q:
Limiting factors of photosynthesis 
A:
Temperature, carbon dioxide concentration and light intensity/ wavelength
Q:
How is chlorophyll reduced
A:
The electrons from photolysis replace those lost by the chlorophyll
The hydrogen ion and electron reduces NADP to make NADPH
The evolved oxygen is released as a useful waste product
Q:

Adding a phosphate to ADP is known as?

A:

Phosphorylation

Q:

What does ATP provide cells with

A:

Small packets of energy

Q:

why is ATP useful

A:

1. Releases energy in small / 
manageable amounts; 
2. (Broken down) in a one- 
step / single bond broken;

3. Immediate energy 
compound / makes energy available rapidly;

4. Phosphorylates / adds phosphate;

5. Makes (phosphorylated 
substances) more reactive / 
lower activation energy;

6. Quickly reformed / made
again;

Q:

What is NADP in the LIR

A:

NADPH provides reducing power within reactions as it loses this hydrogen, becoming re oxidised to NADP.in the light independent stage

photosynthesis

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