Photo_Resp

Photo_Resp - Energy in Cells Cells run on available energy...

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1 Energy- the ability to do work Kinetic energy - energy of movement Potential energy – energy that is stored Chemical energy – energy stored in molecules Energy in Cells Cells run on available energy in the form of: 1. Chemical Fuels - lipids, carbohydrates, proteins - hydrogen-carbon bonds 2. Electrochemical gradients - spatial variation of both electrical potential and chemical Concentration across a membrane 3. ATP - an energy currency Carbon dioxide Sunlight Water Oxygen Glucose What happens in Photosynthesis? Light + CO 2 + H 2 0 -> Glucose + O 2 Photosynthesis Photo-reactions (plants capture energy) Plants use light to make ATP/NADPH All green parts of plants have chloroplasts with chlorophyll (pigment) Photosynthesis occurs in chloroplasts Oxygen is produced from water
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2 Plant Organs Reproductive Transport and support Water intake Support Storage Photosynthesis Leaves are thin with maximal surface area Light Absorbance, evaporative cooling Chlorophyll - main light capturing pigment of photosynthesis Chlorophyll LE 10-6 10 –5 nm 10 –3 nm 1 nm 10 3 nm 10 6 nm 1 m (10 9 nm) 10 3 m 380 450 500 550 600 650 700 750 nm Longer wavelength Lower energy Shorter wavelength Higher energy
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Photo_Resp - Energy in Cells Cells run on available energy...

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