Photosynthesis

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Where does the light dependent stage occur and what does it produce?
Thylakoid membrane and it produces ATP and reduced NADP
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Where does the independent stage occur and what does it produce?
Stroma and produces glucose and other products of photosynthesis
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Which is the main photosynthestic tissue in a leaf?
The pallisade mesophyll layer
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What is the role of the photosynthetic pigments?
To absorb light energ and convert it to chemical energy
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Give an example of a primary pigment and accessory pigments?
Primary- chlorophyll a Acessorry - chlorophyll b, carotenoids (carotene + xenophyll)
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How do you calculate the Rf value?
Distance moved by pigment divided by distance moved by solvent
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What is the absorption spectrum?
Shows how much light is absorbed by a particular pigment at each wavelength of light
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What is the action spectrum?
Shows the rate of photosynthesis at different wavelengths of light
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Why can plants green?
None of the plant pigments are able to absorb green light
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What is the relationship between the absorption and action spectrum?
They have a similar trend, as the wavelength of light absorbed by the pigment is used in the biochemical reaction to produce the products of photosynthesis
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What is the antenna complex and what happens there?
The light harvesting unit - where accessory pigments funnel light to the reaction centre - so when light strikes the reaction centre an electron is raised up to a higher level - setting up a flow of electrons
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What are the two types of antenna complexes?
Photosystem 1/ photosynthetic unit P700 and Photosystem 2/ photosynthetic unit P680
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Where are the antenna complexes in the cell?
Thylakoid membranes of the chloroplast
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Where do the light dependent reactions take place and what are they called?
Thylakoid membranes, non-cyclic and cyclic photo-phosphorylation
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What are the products of light dependent reactions?
ATP and reduced NADP
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What are 3 ways in which the electrochemical gradientis produced in non-cyclic photophosphorylation?
Photolysis, proton pumps, NADP being reduced
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Where does the light independent reaction take place?
The stroma
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What does the light dependent reaction produce?
Hexose sugars (glucose) and other products of photosynthesis
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What are the products of photosynthesis?
Cellulose/starch, lipids and amino acids (proteins)
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Why does the increase in temperature have a greater effect on respiration than photosynthesis?
Because respiration contains more enzymes during the process
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What is the function of Nitrogen and what is the symptom of deficiency of it?
Used to form amino acid, to be used in photosynthesis and nucleotides (DNA, RNA,ATP). Symptom of deficiency include reduce growth and yellowing of leaves - chlorosis
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What is the function of Magnesium and what is the symptom of deficiency?
Used to form chlorophyll a and symptom of deficiency is the yellowing of the leaves - chlorosis
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Card 2

Front

Where does the independent stage occur and what does it produce?

Back

Stroma and produces glucose and other products of photosynthesis

Card 3

Front

Which is the main photosynthestic tissue in a leaf?

Back

Preview of the front of card 3

Card 4

Front

What is the role of the photosynthetic pigments?

Back

Preview of the front of card 4

Card 5

Front

Give an example of a primary pigment and accessory pigments?

Back

Preview of the front of card 5
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