Symptoms of phenylketonuria (PKU) may be

minimized or suppressed by a diet low in
a. serine.
b. glycine.
c. phenylalanine.
d. proline.
e. glutamic acid.


Answer: c

Biology & Microbiology

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The protists are a diverse group of organisms that have traditionally been grouped together because they all ____

a. have the same type of nutrition b. live in the same environments c. have very similar DNA sequences d. have very similar shapes e. are not prokaryotes, fungi, plants, or animals

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If you eliminated all sources of calcium (dairy

products, some vegetables) from your diet, the level of which of the following would rise in an attempt to supply calcium stored in your body to the tissues that need it?

a. aldosterone b. calcitonin c. mineralocorticoids d. parathyroid hormone e. GH

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Intermediate filaments function in

a. cell motility. b. providing mechanical strength for cells. c. nuclear pore structure. d. All of the above e. None of the above

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If you were working with a protein that needed a certain pH to work, what would you need in the solution containing the protein?

a) salt b) acid c) buffer d) carbon dioxide

Biology & Microbiology