Midterm_Practice_TA_Diana_ (1)

Midterm_Practice_TA_Diana_ (1) - Practice questions on...

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Practice questions on Amino Acids: (1) The structure of the amino acid is shown below. Indicate which part of this structure represents the amino acid's side chain . (2) A segment of a protein is analyzed and found to contain the amino-acid sequence Glu-Leu-Asp. The structures of these three amino acids are shown below. Draw an arrow (or arrows) to the peptide bond(s). (3) For each amino acid, tell whether it is polar or non-polar? Hydrophobic or hydrophilic? (4) The tertiary structure of a protein refers to the: Non-polar, hydrophobic Non-polar, hydrophobic Polar, hydrophilic
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A. Sequence of amino acids B. Presence of alpha-helices or beta-sheets C. Unique three-dimensional folding of the molecule D. Interaction of a protein with other subunits of enzymes E. Interaction of a protein with a nucleic acid (5) Which statement is true concerning the structure of proteins? A. The primary structure is the sequence of amino acids B. Alpha helixes and beta sheets are examples of secondary structure.
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This note was uploaded on 12/06/2011 for the course LS 3 taught by Professor Lin during the Spring '06 term at UCLA.

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Midterm_Practice_TA_Diana_ (1) - Practice questions on...

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