[BIOL 1000] - Final Exam Guide - Comprehensive Notes for the exam (39 pages long!)

• School: York University
• Department: Biology
• Course: BIOL 1000
• Professor: Nicole Nivillac

Document Summary

Visible region of the electromagnetic spectrum that is visible to the human eye. 3. absorbed by object: absorption occurs when photon is transferred to electron within molecule (ground to excited state, only absorbed if energy of photon matches amount of energy to move the photon to another state a. i. If not, then its transmitted instead of absorbed. Through pigments: stream of energy particles called photons o. Resonant structure, accessory pigments transfer energy to chlorophyll a. Conjugative system - one thing that all pigments have in common: alternating single/double bonds of carbon atoms o o. Results in delocalized electrons (not tightly bound to carbon; easily excited) Electrons capture photons/energy which can be used to do work i. e. chlorophyll. Does not use light energy to convert co2 into carbs. Contains bacteriorhodopsin (light driven proton pump) o. Pigments capture sunlight to drive the pump ; creating a chemical gradient (potential energy for atp synthase) Many organisms use light as source of energy.