Blood pressure is highest in
A) arteries.
B) capillaries.
C) arterioles.
D) venules.
E) veins.
A
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You want to determine the function of a vertebrate gene by creating a mutant strain. What model organism would be most suitable?
A. C. elegans B. Arabidopsis C. sea urchin D. Brachydanio rerio E. Drosophila melanogaster
Members of the ____ subphylum, including shrimp, lobsters, and crabs, generally have five pairs of appendages on
their heads: two pairs of antennae and three pairs of mouthparts, including mandibles.
a. Myriapoda b. Trilobita c. Chelicerata d. Hexapoda e. Crustacea
Archaeopteryx is considered a transitional fossil between birds and reptiles due to the presence of which feature?
a. Feathers b. Long bony tail c. Jaw with teeth d. Fingers on the forelimbs with claws e. All of these choices.
The ? chain of adult hemoglobin is composed of 146 amino acids of a known sequence. In comparing the normal ? chain with the ? chain in sickle-cell hemoglobin, what alteration is one likely to find?
A) trinucleotide repeats B) extensive amino acid substitutions C) glutamic acid replacing valine in the first position D) frameshift substitutions E) valine instead of glutamic acid in the sixth position