a) the backbone of rna contains ribose.
b) rna contains pyrimidines but not purines.
c) rna contains purines but not pyrimidines.
d) dna contains pyrimidines but not purines.
e) dna contains purines but not pyrimidines.
8) which of the following lumen diameters would be typical of a muscular artery?
a) 0.2 mm
b) 1.0 cm
c) 0.4 mm
d) 0.4 cm
e) 1.5 cm
9) during amphimixis,
a) sperm become capacitated.
b) the ovum finishes meiosis ii.
c) the male and female pronuclei fuse.
d) meiosis occurs.
e) gametes are formed.
10) which of the following statements concerning the parasympathetic division of the
autonomic nervous system is false?
a) preganglionic neurons are located in the brain stem and sacral region of the spinal
cord.
b) ganglionic neurons are located in ganglia within or near to effectors.
c) preganglionic fibers are relatively short and postganglionic fibers are relatively long.
d) the actions of the parasympathetic division are more localized than those of the
sympathetic division.
e) the ganglionic neurons always release acetylcholine.
11) which group of hormones cause an anti-inflammatory action?
a) thyroglobulins
b) mineralocorticoids