When an electron returns to its ground state, energy will be released as heat or an emission of light of a longer

wavelength known as:
a. fluorescence.
b. UV radiation.
c. action spectrum.
d. photoelectron hydrolysis.
e. photoelectron degradation


a

Biology & Microbiology

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Dynein motor proteins use ATP energy to:

A. carry vesicles along a microtubule within a cell in a minus-to-plus direction. B. carry vesicles along a microfilament within a cell in a minus-to-plus direction. C. carry vesicles along a microtubule within a cell in a plus-to-minus direction. D. carry vesicles along a microfilament within a cell in a plus-to-minus direction. E. slide along microfilaments to contract muscle cells.

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Highly active antiretroviral therapy (HAART) is the most effective prophylaxis and treatment in patients with acquired immunodeficiency syndrome (AIDS) with which type of infection?

a. Cyclospora b. Sarcocystis c. Cryptosporidium d. Toxoplasma

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The principal driving force for guttation is

a. passive transport. b. sunlight. c. root pressure. d. upward pressure as sugar is forced into the roots. e. pumping by the xylem cells.

Biology & Microbiology

Who was the first to reveal how certain bacteria can obtain energy from inorganic compounds (such as nitrogen- and sulfur-containing compounds) rather than organic substrates?

a. Antoni van Leeuwenhoek b. Frederick Griffith c. Martinus Beijerinck d. Sergei Winogradsky

Biology & Microbiology