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Energy Metabolism: Photosynthesis - Coggle Diagram
Energy Metabolism: Photosynthesis
uses light energy to synthesize carbohydrate with carbondioxide and oxygen.
6CO2+6H2O=C6H12O6
Reducing Power
Electrons gained=Reduction
Electrons lost= Oxidation
Stroma Reactions
Also known as dark reactions.
ATP and NADPH rects with carbon dioxide to produce carbohydrate.
Calvin Cycle take place here
Pigments
Chlorophyll a
most important photosynthesis pigment.
Peak absorbence at 430nm and 660 nm
contains hydrogen and methyl functional group
Important to all plants, algae and cyanobacteria.
Chlorophyll b
Second most numerous.
Peak absorbenc at 450nm and 650nm
similar to chlorophyll a
Carotenoids
absorbs excessive the light
protection of other chlorophyll pigments
mostly present in leaves.
Anabolic Metabolism
Constructive metabolism.
Intermediate storage
Simple sugar glucose and disaccharide sucrose
Long term storage
starch and glycogen
Short term storage
ATP and NADPH
Light Dependent Reactions
water is electron source and light is energy source which makes ATP and NADPH as intermediates for this reaction.
Also known as Thylakoid reactions.
Occurs in thylakoid region of chloroplast.
Alternatives
Cyanobacteria Photosynthesis
has phycobilins and open-chain tetrapyrrole rings.
Bacterias
has bacterichlorophyll for photosynthesis.
Other Electron Carriers
Cytochromes: protein that holds iron atom.
Plastocyanin: Protein that carries electrons on metal atom.
Plastoquinones: helps to transport electrons within the membrane but in short distance.
Factors Affecting the photosynthesis
Environmental
Leaf Structures
LIght
Water
Internal
C4 Metabolism
Crassulacean Acid Metabolism