GS2022 | PHOTOSYNTHESIS [PS] NOTES ACTIVITY
LABEL THE PARTS OF THE CHLOROPLAST ORGANELLE – location location location
Where in this organelle do the LIGHT DEPENDENT REACTIONS occur?
Where in this organelle do the LIGHT INDEPENDENT REACTIONS occur?
WRITE THE GENERAL EQUATION FOR PHOTOSYNTHESIS (it does not need to be balanced)
What items in the above are the REACTANTS?
What items in the above are the PRODUCTS?
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TWO TYPES OF PS REACTION PATHWAYS compare and contrast these
linear
cyclical
ENZYMES are workshops
DEFINE ENZYMES what is their job and how do they do it?
NAME TWO CRITICAL ENZYMES IN PHOTOSYNTHESIS (we will come back to these)
Hint: one is found in the Calvin Cycle, the other is found in C4 and CAM photosynthesis
LIGHT AND PIGMENTS are essential
ABSORPTION | REFLECTION | TRANSMISSION
DRAW TO COMPARE AND CONTRAST THESE TERMS
WHAT COLORS IN THE LIGHT SPECTRUM ARE ENERGETICALLY ACTIVE IN PHOTOSYNTHESIS?
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WHAT IS IT ABOUT THIS MOLECULULAR STRUCTURE
THAT ALLOWS IT TO INTERACT WITH LIGHT?
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WHAT IS THE PRIMARY REACTION CENTER PIGMENT
IN PHOTOSYNTHESIS?
LIGHT DEPENDENT REACTIONS aka, the Z scheme or Hill reactions
TWO PHOTOSYSTEMS
Sketch and label the Z scheme
Is this a linear or cyclical reaction set? Explain.
There a ‘cyclical’ version of this cycle. When and how is this important?
What are the PRODUCTS of the LIGHT DEPEPENDENT reaction set?
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WHERE EXACTLY does this reaction set take place?
CHEMIOSMOSIS
DEFINE AND EXPLAIN CHEMIOSMOSIS location!
PHOSPHORYLATION
EXPLAIN PHOSPHORYLATION – USE A SKETCH OF ATP SYNTHESIS TO AID IN YOUR EXPLANATION
WHAT ARE TWO (2) TYPES OF PHOSPHORYLATION? WHERE SPECIFICALLY DO THEY OCCUR
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WHAT ENZYME COMPLEX IS INVOLVED IN PHOSPHORYLATION IN PS? HOW DOES IT WORK?
LIGHT INDEPENDENT REACTIONS aka, the CALVIN CYCLE
WHAT MAKES THIS REACTION SET CYCLICAL?
SPECIFICALLY, WHERE DOES THIS REACTION SET OCCUR? location location location
OXIDATION / REDUCTION aka, REDOX REACTIONS
Follow the bouncing electron… explain redox reactions as it relates to PS
WHAT IS THE INITIAL REACTANT IN THE CALVIN CYCLE?
WHAT ARE THE PRODUCTS OF THE CALVIN CYCLE?
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WHAT IS THE CRITICAL ENZYME INVOLVED IN THIS REACTION SET? There’s something interesting about this
enzyme… what is it?
PHOTORESPIRATION AND PHOTOSYNTHESIS
DEFINE PHOTORESPIRATION Also discuss the following:
Why does it occur? Under what circumstances does it become a problem for the efficiency of photosynthesis?
NATURE’S ANSWER TO PHOTORESPIRATION adaptations
SHOW TWO ADAPTATIONS TO PHOTOSYNTHESIS THAT REDUCE THE EFFECTS OF PHOTORESPIRATION
Explain as you COMPARE / CONTRAST
Hint: grasses, for example
Hint: cactus, for example
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WHAT IS THE CRITICAL ENZYME INVOLVED IN THESE TWO ADAPTIVE RESPONSES TO PHOTORESPIRATION?
HOW DOES THIS ENZYME WORK?
Hint: PEP shuttle