What role do pigments play in the process of photosynthesis?
Photosynthetic organisms capture energy from sunlight with pigments.
Photon a packet of light energy.
White light is composed of ROYGBIV.
Green light is not absorbed by pigments but Violet and red are the most absorbed.
Pigment –light absorbing molecule
Chlorophyll- principle pigment found in chloroplast to make ATP
The two types of chlorophyll found in plants, chlorophyll a and chlorophyll b, absorb light very well in the blue-violet and red regions of the visible spectrum, but not in the green region, as shown in the graph. Leaves reflect green light, which is why plants look green.
Granum- several thylakoids
Thylakoid- a single disc where photosynthesis takes place (Light reaction)
Stroma- the space (cellular fluid) within the chloroplast (dark reaction)
ATP
The ATP is adenosine Triphosphate
Aden-(adenine base) Osine-(ribose sugar) Tri-( three) Phosphate- (the compound phosphate)
The energy is in the bond
How is ATP used in body?
Stores energy Releases energy Biochemical reactions
a) Movementb) Digestionc) Nervous systemd) Transportatione) Enzymatic Reactions
Bigger BatteryNADPH is equal to 3 ATP
NADP+ (nicotinamide adenine dinucleotide phosphate) is a carrier molecule.a. NADP+ accepts and holds two high-energy electrons, along with a hydrogen ion (H+). In this way, it is converted into
NADPH.b. The NADPH can then carry the high-energy electrons to chemical reactions elsewhere in the cell.
Photosynthesis
Carbon dioxide enters the cycle
Sugar is made and oxygen released
Uses light energy to recharge batteries