Biology

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1.There are three basic types of amino acids: 1) those with electrically charged side chains; 2) those with polar side chains; and 3) those with nonpolar side chains. A) True B) False2.All amino acids share a common “backbone”. Which chemical component (or components) is part of the backbone of an amino acid? A) An amino group (NH2) B) A carboxyl group (COOH)

C) A hydrogen atom
D) A central carbon atom that is commonly called an α-carbon atom E) All of the above3.Suppose that we link 100 amino acids together. The resulting molecule can be referred to as... A) A polymer B) A polypeptide

C) A polysaccharide
D) a and b
E) a and c4.Which statement accurately describes the primary structure of a polypeptide? A) The primary structure of a polypeptide is the number and sequence of nucleotides read from the N-terminus to the C-terminus B) The primary structure of a polypeptide is the number and sequence of amino acids read from the N-terminus to the C-terminus C) The primary structure of a polypeptide is the number and sequence of monosaccharides read from the N-terminus to the C-terminus D) The primary structure of a polypeptide is the number and sequence of fatty acids read from the N-terminus to the C-terminus E) None of the above5.For a given set of chemical conditions (e.g., for a given temperature and pH), the primary structure of a polypeptide determines secondary and tertiary structure. A) True B) FalseAssuming that chemical conditions in the surrounding environment remain constant, THEN the sequence of amino acids will determine how components of the amino acid backbones form hydrogen bonds, and how the side chains/R-groups interact chemically. THUS, the statement is true.6.Which kind (or kinds) of chemical interactions produces the tertiary structure of a polypeptide? A) Hydrogen bonds among the side chains (R-groups) of amino acids B) Hydrophobic interactions among the side chains (R-groups) of amino acids C) Ionic bonds among the side...
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