The signalling molecules that travel the farthest are
a. intracellular
b. paracrine
c. Hormones
d. neurotransmitter
Answer: c. Hormones
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If the resting potential was changed to ?66 mV, the next time the channel opened for 8 msec, how many monovalent ions would pass through the channel?
A) 144,000 ions B) 130,000. C) 158,000 D) 18,000 E) There is insufficient information to calculate the number of ions.
The type of tissue illustrated in the accompanying figure is:
a. elastic connective tissue.
b. simple squamous epithelium.
c. pseudostratified epithelium.
d. cartilage.
e. adipose tissue
The bulbourethral glands secrete a fluid containing fructose and prostaglandins. Indicate whether the statement is true or false
The host range of a virus is determined by _____
A) the enzymes carried by the virus B) whether its nucleic acid is DNA or RNA C) the proteins in the host's cytoplasm D) the proteins on its surface and that of the host