Erosion of the gastrointestinal tract that results in a sore is called a ________
A) pore B) chancre C) peptic ulcer D) diverticulum
Answer: C
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A ribonucleoprotein is:
A. an enzyme that degrades RNA. B. an RNase that functions in the nucleus. C. a nucleotide-transport protein. D. a noncoding RNA complexed with protein.
Why are most energy pyramids limited to three to five levels
Solid worms that lack a body cavity are known as
A. acoelomates. B. triploblastic. C. diploblastic. D. pseudocoelomates. E. coelomates.
To determine the isoelectric point of a protein, first establish that a gel:
A) contains a denaturing detergent that can distribute uniform negative charges over the protein's surface. B) exhibits a stable pH gradient when ampholytes become distributed in an electric field. C) is washed with an antibody specific to the protein of interest. D) neutralizes all ionic groups on a protein by titrating them with strong bases. E) relates the unknown protein to a series of protein markers with known molecular weights