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Lecture 14

BIOL107 Lecture Notes - Lecture 14: Photosynthesis, P680, Light-Dependent Reactions


Department
Biology (Biological Sciences)
Course Code
BIOL107
Professor
Damián Cirelli
Lecture
14

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Biol 107 Lecture 14 & 15
Notes
Written by Ramesh Mahdavifar
Lecture 14: Photosynthesis Introduction
Photosynthesis is the most important set of reactions on the planet
Q: Why does photosynthesis make the creation of cities possible?
A: A. It provides the chemical energy to fuel our bodies
B. It releases the oxygen we need to breath
C. It provides the chemical energy to fuel our cars
D. A, B, & C
The generalized photosynthetic equation

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The green-plant photosynthetic equation
This is the monosaccharide formula
What is Light?
Like are packets of energy (quanta) called photons that move through space at the speed of light
© while oscillating at some frequency (f).
Wavelength= c/f
Visible light is a tiny portion of the electromagnetic spectrum of radiation (ENERGY)
This wavelength is what characterizes different types of light, like visible, infrared or microwaves

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Pigments selectively absorb light
Light (white light) can be transmitted or absorbed
Pigments can transmit and absorb different portions of the spectrum
The color you see on opaque objects is whatever did not get absorbed
For example, blueberries are reflecting BLUE light and absorbing all other colours
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