Although Americans make up less than 5% of the total human population, what percentage of the world's resources do Americans generally use?
A) 51%
B) 24%
C) 73%
D) 82%
B
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A rare genetic disorder called Gaucher disease may strike as many as one in 450 people of ____ descent
a. Middle Eastern
b. Western European c. African American d. British e. Eastern European
Which of the following statements best describes ribozymes?
a. Ribozymes are proteins that aid in the production of ribosomes. b. Ribozymes are nucleic acids that produce ribose sugars. c. Ribozymes store enzymes in ribosomes. d. Ribozymes process RNA molecules in eukaryotes.
What happens after a subthreshold depolarization?
a) a reversal of the direction of the neural impulse b) a full action potential c) a partial action potential d) no action potential e) a proportional action potential
Proteins that block the passage of RNA polymerase are called:
a. promoters b. activators c. operons d. enhancers e. repressors