CH_8MCAT

CH_8MCAT - CH 8 Multiple Choice 1 How do red and blue light differ from one another a They differ in intensity b They have a different number of

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CH 8 Multiple Choice 1. How do red and blue light differ from one another? a. They differ in intensity. b. They have a different number of photons in each quantum. c. Their wavelengths are different. d. They differ in duration. e. Red is radiant, whereas blue is electromagnetic. Answer: c 2. The wavelength of X rays is shorter than the wavelength of infrared rays. Which of the following is true? a. X rays have more energy per photon than infrared rays have. b. X rays have a smaller value for Planck’s constant than do infrared waves. c. X rays have a different absorption spectrum than do infrared waves. d. X rays and infrared waves have the same frequency. e. Infrared waves are in the ground state, whereas X rays are in the excited state. Answer: a 4. When white light strikes a blue pigment, blue light is a. reduced. b. absorbed. c. converted to chemical energy. d. scattered or transmitted. e. used to synthesize ATP. Answer: d 6. The photosynthetic pigment chlorophyll a absorbs a. infrared light. b. orange-red and blue light. c. X rays. d. gamma rays. e. white light. Answer: b 7. Accessory pigments a. play no role in photosynthesis. b. transfer energy from chlorophyll to the electron transport chain. c. absorb only in the red wavelengths. d. allow plants to absorb visible light of intermediate wavelengths. e. transfer electrons to NADP. Answer: d 10. The energy difference between an electron excited by a photon and its ground state is
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a. less than the energy of the photon. b. greater than the energy of the photon.
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This note was uploaded on 04/02/2008 for the course BIO 188 taught by Professor Capco during the Fall '08 term at ASU.

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CH_8MCAT - CH 8 Multiple Choice 1 How do red and blue light differ from one another a They differ in intensity b They have a different number of

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