Where are the somas of spinal motor neurons located?
a. ventral root ganglions
b. dorsal white matter
c. ventral gray matter
d. dorsal root ganglions
c. ventral gray matter
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A diet that does not contain any dark green vegetables, whole grains, yeast, or lean meats may result in
a deficiency of which vitamin?
a. B1 b. B2 c. B6 d. folic acid e. niacin
In meiosis chromosomes go through _________ consecutive cell divisions that end with the formation of _________ haploid nuclei
A) two, four B) two, two C) two, eight D) two, six
Retroviruses are characterized by ____
a. RNA that is used as a template to produce DNA in a host cell b. integrating RNA into the host’s chromosome c. the enzyme alkaline phosphatase d. having one strain that causes H1N1 e. the lack of a protein coat
One characteristic of the class Holothuroidea is:
a. that most are predators that consume partially digested prey. b. that most of the species are extinct. c. that they have a reduced endoskeleton consisting of microscopic plates embedded in the body wall. d. that moveable spines are used to facilitate locomotion. e. that they have a distinct central disk with very long, slender arms