Biology 1002B Study Guide - Midterm Guide: Cystic Fibrosis, Enzyme Kinetics, Photochemistry

• School: Western University
• Department: Biology
• Course: Biology 1002B
• Professor: Tom Haffie

Document Summary

Lecture 1: roles of light as used by life. Source of energy and source of information about the environment: characteristics of chlamydomonas that make it a useful model system. Based on the genome sequence, it has attributes of both an animal and plant: function of basic components of chlamydomonas cells. Nucleus, basal body, er, ribosomes, golgi, mitochondrion, chloroplast pyrenoid (where carbon fixation occurs) Eyespot (within outer membrane of chloroplast): enables cell to orientate itself in relation to light to harvest for photosynthesis: relative usefulness of various biological characteristics as measures of complexity. Evolution of multicellularity: advantages to chlamydomonas being phototactic. Want to move towards light to harvest photons for photosynthesis, eyespots maximize this with phototaxis: reasons why chlamydomonas might move away from a light source. Too much light is damaging protein will denature, might damage the photosynthetic apparatus, free radicals (ros: basic structure of rods and cones as photoreceptor cells.