Ethyl alcohol
a. is a depressant.
b. produces an initial euphoria due to its effect on
inhibitory synapses.
c. crosses the blood-brain barrier.
d. binds to many types of neurotransmitter
receptors.
e. includes all of these.
Answer: e
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Which choice is FALSE about Addison's
disease?
a. It could be caused by low cortisol levels. b. It could be caused by tuberculosis. c. It could be caused by an autoimmune condition. d. Blood pressure and blood sugar levels can fall into life-threatening range. e. The condition is treated with synthetic aldosterone.
Variations in rates of growth for different parts of the body are referred to as:
a. allometric growth patterns. b. adaptive growth patterns. c. allopatric growth patterns. d. allopolyploidy. e. preadaptations
With regard to RNA polymerase proofreading ability, which of the following is true?
A) RNA backtracking can remove noncomplementary nucleotides. B) RNA and DNA polymerase proofreading are essentially identical. C) There are specialized mRNA repair pathways that remove noncomplementary nucleotides. D) No proofreading occurs. E) A 3' ? 5' exonuclease fixes all errors in mRNA.
The advantage of the pentose phosphate pathway is that it produces all of the following EXCEPT
A) precursors for nucleic acids. B) precursors for the synthesis of glucose. C) three ATPs. D) NADPH. E) precursors for the synthesis of amino acids.