The pancreas secretes digestive enzymes into the ____

a. blood
b. gallbladder
c. liver
d. duodenum
e. stomach


ANSWER: d

Biology & Microbiology

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Which one of the following statements about the incorporation of selenocysteine into proteins is true?

A. Selenocysteine is an example of a posttranslational modification. B. The tRNA used to translate selenocysteine at a stop codon is first charged with serine. C. The tRNA used to translate selenocysteine at a stop codon has an anticodon sequence of UGA. D. The serine bound to the tRNA used to translate selenocysteine at a stop codon is converted to selenocysteine by the enzyme SelB.

Biology & Microbiology

In animals, the evolutionary development of cephalization is most associated with ____

a. bilateral symmetry b. radial symmetry c. ganglia d. nerve nets e. nerves

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Conscious thought is associated with which one of the following?

A) cerebellum B) cerebral cortex C) medulla oblongata D) hypothalamus E) thalamus

Biology & Microbiology

A hydroxide ion has an oxygen atom 

A. only. B. and an extra electron. C. and a hydrogen atom, and an extra electron. D. and a hydrogen atom, and an extra proton.

Biology & Microbiology