Photosynthesis Flashcards
Is the process by which green plants and autotrophic organisms synthesize food.
Photosynthesis
PHTSYNTHSS Is the combination of ___ with water to form carbohydrates
carbon dioxide
___ is the Source of building materials for photoautotrophs
Carbon dioxide
shows which wavelengths are most strongly absorbed by a pigment.
Absorption spectrum
Shows which wavelengths are most effective at powering a photochemical process.
Action Spectrum
300 molecules of ch a & b and carotenoids
Photosynthetic units
With little chl b P700
Photosystem I
With ch b almost equal to ch a
P680
Photosystem II
photosystem consists of the ff:
- Antenna chlorophyll molecules
- Reaction center (Ch a)
- Series of electrons carriers
reducing agent is ___
NADPH
3 things Light-dependent reaction (Photochemical Reaction) does
1.Produce the reducing agent NADPH
2.Synthesis of ATP
(chemiosmotic phosphorylation)
3. Breakdown of water into H+, O2
- One of the largest and most complex enzymes known
- A giant complex of two protein subunits
- Low substrate specificity
Rubisco - RuBP Carboxylase
RuBP Carboxylase has _ copies of large protein;
each with a molecular wt of ___
Total molecular weight og ___
8
14 K to 15 K daltons
480,000 daltons
Anabolic Metabolism
- Short-term storage:
- Intermediate-term storage:
- Long-term storage
ATP and NADPH
glucose and sucrose
starch and lipids
the anablic synthesis of
glucose
Gluconeogensis
Glucose is polymerized into __
polysaccharides
polysaccharides are __, __, __
- amylose
- amylopectin
- cellulose
CAM Photosynthesis
Crassulacean Acid Metabolism
Carbon Fixation in C4 plants:
PEP - phosphoenol pyruvate will be added with Co2 then a Oxaloacetate will be produced. Oxaloacetate will be a malat , malate will go down and Co2 will be produced to use in Calvin cycle. The unused particles will be converted into Pyruvate and then it will go up and that will use ATP to produce PEP (phosphoenol pyruvate). THE used ATP will then become AMP
