Normally, a certain enzyme has maximum activity at 37°C, but once it has been heated to 100°C and then cooled back down to 37°C, the enzyme is no longer active. Why?
What will be an ideal response?
The enzyme's three-dimensional shape has been distorted, and the active site is no longer able to bind the appropriate substrates in the reaction.
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This is defined as the capacity to do work.
a. metabolism b. electrolytes c. chemical reaction d. concentration e. energy
Mycobacterium fortuitum, Mycobacterium chelonae, and Mycobacterium abscessus are:
a. responsible for approximately 90% of clinical mycobacterial disease. b. unable to grow on routine bacteriologic media. c. gram-negative rods resembling Escheri-chia coli on Gram stain. d. slow growers requiring a minimum of 14 days to grow.
DDT was used in the U.S. in the ____ industry
a. plastics b. agricultural c. paint d. manufacturing e. weapons.
What results in populations that change due to genetic drift?
A) They haven't really undergone evolutionary change. B) They will then be subject to strong sexual selection. C) They have evolved. D) They will soon change back to the original form as a result of natural selection.