________ are chemicals secreted into the space between two nerve cells to transmit a message.
A. Synapses
B. Neurotransmitters
C. Hormones
D. Glia
Answer: B
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The troph of the motile T. vaginalis organism measures 7 to 23 m long and 5 to 15 m wide. The recommended treatment of choice for this urogenital infection is:
a. tetracycline. b. metronidazole. c. penicillin. d. ketoconazole.
Which of the following statements is(are)
generally TRUE of pigments? a. They absorb some photons. b. They reflect all photons. c. They absorb photons of all colors. d. They absorb photons of all wavelengths. e. They do all of these
Consider the pedigree below. The trait seen in the black-shaded individuals most likely is a _______ trait.
A: Dominant, autosomal B: Dominant, X-linked C: Dominant, Y-linked D: Recessive, X-linked
The number of protons in a given atom is equal to its
A. atomic number. B. molecular number. C. neutron number. D. mass.