BIOL 1000 Lecture Notes - Lecture 1: Shap, Suprachiasmatic Nucleus, Bioluminescence
Document Summary
Attracting pollinators, mating attractions, warning: two major functions of light: energy and information, light: electromagnetic radiation. Wavelength and energy inversely related: range of electromagnetic spectrum. Visible light from 400nm (indigo color) to 700 nm (red color: light as a particle. Absorbed by electrons: light can either be absorbed, reflected, or transmitted, absorbing is the most important way of gathering light energy for living humans, pigments: light absorbers. Molecules that can absorb photons of light. A blue pigment will only absorb the color blue and reflect every other color: pigments: shape matters. Electrons capture photons/energy which can be used to do work: light as energy. Photosynthesis converts carbon dioxide into carbohydrates; cellular respiration breaks down carbohydrates and releases atp: light as a source of info, light sensing. Photoreceptors molecule that absorbs light generates a response. Pigment and protein form rhodopsin: how it works: shape matters. When it absorbs light it changes shape and triggers and chain of reactions: how it works.
