Humans excrete their excess nitrogenous wastes as
A. relatively nontoxic urea.
B. uric acid crystals.
C. very toxic ammonia.
D. compounds containing protein.
Answer: A
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A neuron innervating your bicep muscle would be considered part of the
A. central nervous system. B. peripheral nervous system. C. autonomic nervous system. D. sympathetic nervous system. E. parasympathetic nervous system.
While a locus refers to a unit of heredity, a gene refers to a specific position on a chromosome.
Answer the following statement true (T) or false (F)
Which of the following occurs first during an action
potential? a. Many sodium ions flow into the neuron. b. Voltage-gated sodium channels open. c. A local disturbance triggers the resting voltage to reach the threshold level. d. The interior of the neuron becomes positive. e. The interior of the neuron becomes negative.
The use of mRNA as a template in the synthesis of protein is
A) Translation B) Transcription C) Replication D) Conjugation