Uracil can pair with
a. ribose.
b. adenine.
c. cytosine.
d. thymine.
e. guanine.
B
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All of the following are functions of the mammalian kidney EXCEPT
A. water retention. B. filtration of blood. C. excretion of nitrogenous waste. D. regulation of salt balance in the blood. E. production of urea.
What category(s) of organic macromolecule allow(s) myelinated sheaths to act as electrical insulators?
a. proteins b. carbohydrates c. lipids d. nucleic acids e. proteins and nucleic acids
How can we identify a particular element?
a. By its number of protons b. By its number of electrons c. By its number of neutrons d. By its shape of valence shells e. By its amount of energy levels
The allele for albinism (c) is recessive to the allele for normal pigmentation (C). A normally pigmented woman whose father is an albino marries an albino man whose parents are normal. They have three children, two normal and one albino. What would be the genotype for the two normal children?
A. Cc B. cc C. CC D. either CC or Cc E. either Cc or cc