Proteins: Question Preview (ID: 31675)

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Which compound results from the joining of two amino acids?
a) dipeptide
b) disaccharide
c) polypeptide
d) peptide

Which portion of an amino acids differs?
a) carboxyl group
b) central carbon
c) R-group
d) amino group

In the presence of proteins, Biuret's reagent will turn
a) purple-violet
b) red
c) bluish-black
d) reddish-orange

Enzymes are proteins that act as biological catalysts to
a) provide insulation
b) create energy
c) release energy
d) speed up the rate of chemical reactions

A polypeptide is formed by the
a) joining of 2 amino acids
b) joining of many amino acids
c) joining of nucleotides
d) joining of monosaccharides

Which of the following is an example of a protein?
a) butter
b) beef fat
c) hemoglobin
d) DNA

Which of the following correctly identifies the function of proteins?
a) energy storage and release for metabolism
b) structure and cell metabolism
c) storage of genetic information
d) long term energy storage, insulation, and protective coatings

The bonds that join amino acids are
a) hydrogen bonds
b) covalent bonds
c) amino bonds
d) peptide bonds

To test for the presence of proteins
a) Biuret's reagent is used
b) Benedict's solution is used
c) Lugol's iodine is used
d) Sudan IV is used

Which of the following accurately represents the monomers of proteins?
a) monosaccharide
b) nucleotide
c) amino acid
d) triglyeride

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