BIOL 1000 Chapter Notes - Chapter 1-5: Opsin, Horizontal Gene Transfer, Nuclear Membrane
17 Oct 2016
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Provides information eg eyespot can tell intensity and location of a light. Q: how does light reach earth: sun converts hydrogen (h) into helium (he, converted energy given off as electromagnetic waves. A wave of photons; since both a wave and a stream of photons. Light is made up of electric and magnetic eaves, which are perpendicular to each other. Q; red light has ______ energy, blue light has _______ energy within their photons. A: a photon(cid:495)s energy is transferred onto the electron in a molecule so it can go from ground state to an excited state. Note, the photon will only be absorbed if its energy is the same as the energy required to move the electron from ground state. Photons not absorbed are what give the pigments their colour, since they are either reflected or transmitted. A: depends on the number and type of excited states it consists of. E. g. , one high energy excited state absorbs blue light.
