Biology 212

• Specialized plastid.
• -A cell like organelle present in algae and plants that contains chlorophyll and carries out photosynthesis

Semi-liquid substance that surrounds the thylakoid membrane

• A stacked membranous structure within a chloroplast that contains the chlorophyll.
• -Is site of The Light Reaction in photosynthesis

Connections between Grana

In chloroplasts, a complex, organized, internal membrane composed of flattened disks which contain the photosystems involved in the light dependent reactions of photosynthesis

Consists of 1 or more Chlorophyll a molecules in the matrix of protein, that passes electrons out of the photosystem

Light energy to make NADPH and ATP.

• 78% Nitrogen
• 21% Oxygen
• 1% Others

• Function = Captures photons of light
• Structure = Hydrophobic Tail + Ring of excitation

• -Main photosynthetic pigment in plants and cyanobacteria.
• -The only pigment that can act directly to convert light energy into chemical energy
• -Absorbs the 1st pigment (shortest wavelength) in the visible light spectrum

• -Acts as an accessory pigment (secondary light absorbing pigment)
• -Complements and adds to the light absorption of chlorophyll a
• - Increases range of wavelengths
• -Cannont directly convert light energy into chemical energy