Which of the following would NOT include humans?
a. vertebrates
b. animals
c. protistans
d. primates
e. mammals
C
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The most threatening infectious disease of the upper respiratory tract is
a) epiglottitis. b) pharyngitis. c) laryngitis. d) sinusitis.
What is one of the advantages of producing human growth hormone (HGH) from a cloned gene in a bacterial cell?
A) As the protein is introduced therapeutically, it transfers the HGH gene as well. B) Larger quantities are available. C) The bacterial protein has a different amino acid sequence that is more effective. D) The product can be administered by infecting a person with the recombinant bacteria. E) A gene cloned from mice, rather than from humans, can be used.
Which of the following statements about the
pine cone is correct?
a. Cones are exclusively a female structure. b. Cones are the result of pollination. c. One type of cone produces both microspores and megaspores. d. Seeds are formed inside of fruits. e. One type of cone produces microspores; the other type produces megaspores.
Birds excrete their nitrogenous wastes in the form of
A) uric acid. B) ammonia. C) amine groups. D) urea. E) amino acids.