High temperatures can alter the three-dimensional shape of a protein. This process is called denaturing. How might this affect the activity of an enzyme?
What will be an ideal response?
If the three-dimensional shape of the enzyme is changed, then the enzyme may no longer be able to effectively bind with its substrate. It would no longer be able to speed the particular chemical reaction with which it is associated.
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Which of the following term(s) likely apply to the pesticide?
a. macromolecule b. nucleic acid c. inorganic molecule d. nucleic acid and inorganic molecule
In the evolutionary history of the earth, Homo sapiens probably first appeared approximately ________ years ago.
A) 2,000 B) 20,000 C) 200,000 D) 2,000,000
Males more commonly are affected by Xlinked
recessive genetic disorders than are females because
a. females have two X chromosomes and thus less of a chance to be recessive. b. males have only one X and thus more of a chance to be recessive. c. males have only one X, they have multiple alleles for each gene. d. Y chromosomes cause X gene mutations. e. males are weaker genetically than females
The name sac fungi is appropriate for the ascomycetes because
A) they produce spores in saclike structures. B) they grow well in closed bags. C) it is best to carry them in a sack. D) they produce seeds in saclike structures. E) the body of the fungus is a saclike shape.