AP BIO UNIT 3 TEST QUESTIONS WITH
COMPLETE ANSWERS
Obligate Anaerobes - Answer-Organisms that cannot live where molecular oxygen is present.facultative Anaerobes - Answer-can live with or without oxygen Autotrophs - Answer-organisms that make their own food Photosynthesis - Answer-process by which plants use the sun's energy to convert water and carbon dioxide into sugars Heterotrophs - Answer-an organism that depends on complex organic substances for nutrition Stomata - Answer-the small openings on the undersides of most leaves through which oxygen and carbon dioxide can move Stroma - Answer-thick fluid contained in the inner membrane of a chloroplast Thylakoids - Answer-A flattened membrane sac inside the chloroplast, used to convert light energy to chemical energy.grana - Answer-stacks of thylakoids Light Reactions - Answer-reactions of photosynthesis that use energy from light to produce ATP and NADPH Calvin Cycle - Answer-cycle in photosynthesis that reduces fixed carbon to carbohydrates through the addition of electrons ("dark cycle") Carbon Fixation - Answer-The incorporation of carbon from carbon dioxide into an organic compound by an autotrophic organism.Electromagnetic Spectrum - Answer-All of the frequencies or wavelengths of electromagnetic radiation Wavelength - Answer-The distance between crests of waves, such as those of the electromagnetic spectrum.Photon - Answer-a quantum of electromagnetic radiation
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