A typical systolic pressure for a normal adult is ____
a. 60 mm Hg
b. 80 mm Hg
c. 100 mm Hg
d. 120 mm Hg
e. 140 mm Hg
ANSWER: d
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A mutation that is characterized by a change in the DNA sequence, but no change in the resulting protein sequence, is a
A) frameshift mutation. B) missense mutation. C) silent mutation. D) nonsense mutation.
The enzyme responsible for converting pyruvate to acetyl CoA is called
A. ATP synthase. B. peptidase. C. pyruvate dehydrogenase. D. pyruvate oxidase E. hexokinase
Two species of birds that are kept from interbreeding by the differences in their mating songs are experiencing ________ isolation
Fill in the blank(s) with correct word
The rough ER and the smooth ER are distinguished from each other by
A) the presence or absence of membrane-bound ribosomes. B) the presence or absence of membrane-bound ribosomes and the synthesis of lipids by the rough ER and the synthesis of proteins by the smooth ER. C) synthesis of lipids by the rough ER and synthesis of proteins by the smooth ER. D) the presence or absence of both DNA and membrane-bound ribosomes. E) the presence of absence of DNA.