An exergonic reaction results in a net gain of free energy
__________________ Indicate whether the statement is true or false.
F, endergonic
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Cellular crawling motion is accomplished by:
A. the polymerization of microfilaments along the leading edge in response to an activated cell surface receptor. B. the depolymerization of microfilaments along the leading edge in response to an activated cell surface receptor. C. the contraction of microfilaments along the leading edge in response to an activated cell surface receptor. D. the polymerization of microfilaments along the trailing edge in response to an activated cell surface receptor. E. All of these choices can contribute to rapid shifting of direction of crawling motion.
Which of the following is a true statement? a. Polar bears are no longer hibernating
b. Polar bear tissues contain high amounts of mercury and organic pesticides. c. Polar bears are always found within 50 miles of the North Pole. d. Human beings are the only influence that alters the course of evolution for an organism.
Normal human body cells contain how many chromosomes?
a. 22 b. 23 c. 46 d. 44 e. 42
Bacteriorhodopsin is a light-sensitive pigment found
in _________ archaeans and used to supply energy for __________. production. a. halophilic; ATP b. thermophilic; carbohydrate c. methanogenic; methane d. halophilic; carbohydrate e. thermophilic; ATP