BIOL 102 Lecture 10: Chapter 10 Biology Lecture notes
Document Summary
Heterotroph must consume organic molecules for their environment to sustain life. Autotroph make organic molecules from inorganic sources: photoautotroph use light as a source of energy, green plants, algae, cyanobacteria. Energy within light i captured and used to synthesize carbohydrate. H2o is oxidized (provides h+ and electrons) Energy from light drives this endergonic reaction. Zooming in on the location of photosynthesis in a plant. Leaves are the major organs of photosynthesis in plants. These pictures take you into a leaf, then into a cell, and finally into a chloroplast, the organelle where photosynthesis occurs (middle, lm; bottom, tem) White light is a mixture of all wavelengths of visible light. A prism can sort white light into its component colors by bending light of different wavelengths at different angles. (droplets of water in the atmosphere can act as prisms, causing a rainbow to form). Photosynthetic pigments absorb some light energy and reflect others. Leaves are green because they reflect green wavelengths.
