Enzymes:
A) sometimes increase the amount of energy necessary to initiate a reaction.
B) catalyze reactions that release energy, but not those that consume energy.
C) are always consumed by catalyzing a reaction.
D) increase the rate at which a reaction occurs.
E) reduce the energy released by a reaction by one of four different mechanisms.
D) increase the rate at which a reaction occurs.
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In the fall of 2012, Hurricane Sandy caused more than 110 deaths and an estimated $65.5 billion of damage along the Atlantic coast of the United States. Who needs to be involved in preparing for the next "Sandy"?
A. politicians, who we elect to take care of us B. engineers, who design our buildings and transportation systems C. scientists, who are responsible for innovation and new ideas D. Every individual is responsible for his or her future. E. We are all, together, collectively responsible for preparing for our future.
In what other areas of biological study is systematics important?
a. ecology b. physiology c. anatomy d. genetics e. all of the these
Incisors are used to
a. grind food. b. bite off chunks of food. c. tear food. d. mince food. e. pulverize food.
The genotypes of two F1 plants are SsYy, with S and Y alleles dominant to s and y. If fertilization occurs at random
____________________ (number) genotypes and ____________________ (number) phenotypes will result in the F2 generation. Fill in the blank(s) with the appropriate word(s).