The ENCODE project has shown that much of human genomic DNA:
A. encodes protein.
B. forms telomere and centromeres.
C. regulates the expression of protein coding genes.
D. is simple-sequence repeats.
E. is not transcribed.
C
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Reticular fibers are the most numerous type of fiber comprising connective tissue
____________________ Indicate whether the statement is true or false.
The part of the brain you use for thinking is the _______.
a. autonomic nervous system b. cerebrum c. cerebellum d. medulla oblongata
What do evolutionary models suggest about the effect of epistatic deleterious muta-tions (i.e., they act synergistically to produce greater damage than the sum of each mu-tation's individual effect)?
a. Recombination is favored as it disrupts epistatic interactions of deleterious alleles. b. There is no effect when epistasis is strong. c. Recombination is detrimental as it helps to spread deleterious alleles. d. Recombination has no effect on epistatic interactions. e. B and D.
What governs the opening of the potassium channels, which establish the resting membrane potential in the plasma membrane of a neuron?
A) The potassium channels open in response to an influx of sodium ions (Na+) into the neuron. B) The potassium channels open in response to an increase in the membrane potential. C) The potassium channels open after binding a neurotransmitter. D) The potassium channels are always open. E) The potassium channels open in response to a decrease in the membrane potential.