A small RNA unit without a protein coat is called a ________
a. prion
b. vector
c. pathogen
d. viroid
e. virus
d
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An individual that is homozygous for an allele will produce two bands on an electrophoresis gel. (A homozygous individual only produces one kind of protein for a trait so will only produce one band on a gel electrophoresis.)
A. true B. false
Blood pressure depends on:
a. total blood volume only b. cardiac output only c. degree of arteriole dilation only d. total blood volume and cardiac output only e. total blood volume, cardiac output, and degree of arteriole dilation
A divergence from _____ gave rise to tetrapods
a. ray-finned fishes c. cartilaginous fishes b. lizards d. lobe-finned fishes
Which of the following is NOT a characteristic of all living things?
A) metabolism B) motility C) growth D) reproduction E) responsiveness