Which of the following is not part of the upper respiratory tract?

A. Trachea
B. Mouth
C. Pharynx
D. Nasal cavity
E. Larynx


Answer: A

Biology & Microbiology

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A cotyledon is?

A. a fragment of tissue used for reproduction in bryophytes. B. the fruit produced by flowers of angiosperms. C. the first leaf structure to arise in the embryo of an angiosperm. D. a spore-like structure used for reproduction in plants. F. the zygote formed in ferns from the union of two gametes

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Ribose differs from deoxyribose by having:a

two attached bases. b. one less oxygen. c. an extra hydroxyl group. d. an extra carbon in the ring. e. one less carbon in the ring.

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Nucleic acids are polymers of ________ monomers

A) monosaccharide B) fatty acid C) DNA D) nucleotide

Biology & Microbiology