Functionally important gene sequences such as those encoding ribosomal RNA are
A. highly mutated sequences.
B. transposable sequences.
C. moderately repetitive sequences.
D. highly repetitive sequences.
Answer: C
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What maintains the resting membrane potential?
a. Na+-K+ pumps b. leaky sodium channels c. gated sodium channels d. leaky potassium channels e. gated potassium channels
The percentage of different colored water boatmen eaten by fish were graphed relative to the frequency of that color in the population. Based on the graph, a population of water boatmen would ________
A. lose rare genotypes. B. increase in size. C. increase in rare genotypes. D. have no variation in genotype frequencies. E. decrease in genetic variability.
Persea americana is the binomial for Avocado that is included in Lauraceae. Pick the species name only for this plant.
Persea americana Avocado Lauraceae
Which of the following is a property of water?
A) it has a high capacity for heat. B) it is not a common reactant in metabolic reactions. C) It is not a good solvent. D) it is liquid in a very narrow temperature range. E) it is a nonpolar molecule.