Chapter 6 Photosynthesis. autotroph  An organism that can make its own food  Includes plants, algae, some protists, and some bacteria.

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Presentation transcript:

Chapter 6 Photosynthesis

autotroph  An organism that can make its own food  Includes plants, algae, some protists, and some bacteria

photosynthesis  The process of converting sunlight to chemical energy

Equation for photosynthesis Carbon dioxide + water yields glucose + oxygen

heterotroph  An organism that obtains its nutrition by eating other organisms

ATP  An energy storing molecule; stores chemical energy produced from photosynthesis Energy is released from ATP when a phosphate group is broken off.

chloroplast  A structure found in plants; where photosynthesis occurs

thylakoid  Membrane of grana where first stage of photosynthesis takes place; light energy is absorbed

grana  Structures in the chloroplast that are the site of photosynthesis; (a stack of thylakoids)

chlorophyll  A green pigment that absorbs certain wavelengths of light

pigment  Compounds that absorb light

carotenoid  Compounds that are accessory pigments (they help chlorophyll)  Absorb wavelengths of light that chlorophyll can’t  Produce yellow, orange and brown colors

stomata  Holes in plant leaves that take in CO2 and give off O2 and water

stroma  Solution in the space around the grana (pl.)  Granum (s.)

photosystem  Cluster of pigment molecules in thylakoid membrane