Chloroplast membrane
Both inner and outer membrane
Key Terms
Chloroplast membrane
Both inner and outer membrane
Integranal lamellae
Extension of thylakoid membrane
Acts as skeleton
Intermembrane space
Space between membranes (10-20nm)
Granum
Stack of thylakoids
Plural grana
Stroma
Contains enzymes needed for photosynthesis, DNA and ribosomes
Thylakoids
Where the green pigment is found
| Site of light absorption and ATP synthesis
Related Flashcard Decks
Study Tips
- Press F to enter focus mode for distraction-free studying
- Review cards regularly to improve retention
- Try to recall the answer before flipping the card
- Share this deck with friends to study together
| Term | Definition |
|---|---|
Chloroplast membrane | Both inner and outer membrane |
Integranal lamellae | Extension of thylakoid membrane Acts as skeleton |
Intermembrane space | Space between membranes (10-20nm) |
Granum | Stack of thylakoids Plural grana |
Stroma | Contains enzymes needed for photosynthesis, DNA and ribosomes |
Thylakoids | Where the green pigment is found | Site of light absorption and ATP synthesis |
Chromatogrophy table | Pigment Distance travelled by compound Distance travelled by solvent Rf value |
Paper chromatogrophy to seperate pigments | Dissolve pigments in solvent (propan-2-ol) Using chromatography paper Allow the solvent to move up the paper and seperate the pigments Diff pigments would move at diff speeds up the paper Calculate Rf values |
Why do plants contain a mixture of diff pigments | Light is made up of many diff wavelengths | To allow plants to absorb maximum light for photosynthesis |
Photophosrylation | Production of ATP in the presence of light from ADP and Pi |
ATP | Adenosine tri-phosphate | Formed from inorganic phosphate and ADP during photophosphorylation |
NADP | Co.enzyme reduced to NADPH by the addn. of protons and electrons at the end of the light dependent stage |
Photolysis | 2H2O ---> 4 H+ and 4 e- and O2 H+ and e- used in photophosphorylation O2 used in respiration and/or released |
Non cyclic photophosphorylation | Involves PSII and PSI | Produces ATP, oxygen and reduced NADP |
Cyclic photophosphophorylation | Involves PSI | Produces ATP in smaller amounts. No photolysis involved so no protons or oxygen produced |
Process of cyclic photophosphorylation | Light hits a chlorophyll molecule in PSI and e- in primary pigment is raised to a higher energy level until it leaves Passed along electron transport chain and energy is released in small amounts to pump H^+ into the thylakoids disc Builds up conc. gradient Diffuse back out through specialised channels attached to ATP synthase Movement provides energy to combine ADP and Pi (chemiosmosis) |
Non-cyclic vs cyclic photophsophophorylation | The electrons from the chlorophyll a aren't passed onto NADP but are passed back to PSI via electron carriers |
Role of chlorophyll in photolysis | It is the lost electrons from photolysis that go to the chlorophyll after absorbing light Causes more water to dissociate |
How is energy of light converted into chemical energy in the LDR | Electrons excited Use of electrons carriers Production of ATP |
Calvin cycle | 6 CO2 (+ RuBisCO) ---> 12 GP (+ 12 ATP) ---> 1,3 biphosphate (+12 NADPH) ---> 12 TP ---> 10 TP (5 ATP) ---> 6 RuBP |