BIOL 111 Lecture Notes - Lecture 4: Twine, Silica Gel, Photosystem Ii
Document Summary
Formula: 6co2 + 6h2o + light energy c6h12o6 + 6o2. : w/chloroplasts: tubes kept cold, don"t add dpip until right before putting into spectrophotometer. 24 cm tube had largest drop in absorbance values: low absorbance values=more photosynthetic activity=more light absorbed floating disks exp. : aspirated spinach leaves: measuring rate of photosynthesis to find which wavelength of light works best for photosynthesis, 25 spinach leafs cut into disks and aspirated with a syringe, aspiration: spinach disks put into syringe. Coleus leaves: green: rounded edges, maroon: serrated edges, variegated: green rounded edges, lugol"s: turns blue/black in presence of starch. Shows where exactly in the leaf photosynthesis is occurring summary: photosynthesis=solar-powered, 100% efficient process removes atmospheric co2 and transforms it into o2 and carbs. Calvin cycle (light ind. rxn=in stroma of chloroplast) don"t require light products: glucose (sugar: action and absorption spectra. Absorption: shows photosynthetic pigments responsible for photosynthesis @ specific wavelengths. Which pigment has max. absorption for that wavelength on action spectra.
