Biology 1002B Lecture Notes - Ribose, Retina, Phosphodiesterase
1 May 2013
School
Department
Course
Professor
Document Summary
Chlamydomonas: a sexually active, light harvesting, carbon-reducing hydrogen-belching planimal. Has 2 basal bodies: flagella /cilia develop from this organelle. Pyrenoid: the site of carbon fixation within the chloroplast. Major enzyme involved in carbon fixation resides here. Found within the outer membrane of the chloroplast. Has nothing to do with photosynthesis directly. It harvests light, but the light is used for it to orient itself in its environment. 1000 times bigger than a bacterium in terms of volume. Required for phototaxis: movement towards or away from light. Photons of light: lots of energy in a photon. Hard to trap the bright light; doesn"t want to absorb too much light. The eye and the eyespot probably both came from a common ancestor with something that was. It can destroy the photosynthetic mechanism even less complex (hypothesis; are they actually homologous?) Two types of photoreceptor cells: rods and cones. Photoreceptors are located within the discs in the photoreceptor cells.
