The chemical fusion of monomers into polymer chains is accomplished by: A) addit

Question

The chemical fusion of monomers into polymer chains is accomplished by:

A) addition of water and formation of ionic bonds between monomers B)addition of water and breaking of covalent bonds between monomers C)removal of water and formation of covalent bonds between monomers D)ionization of monomers in a nonpolar solvent E)hydrogen bonding of monomers with molecules in a polar solvent

The covalent bonds linking amino acids to each other are called: A) cationic bonds B)anionic bonds C)peptide bonds D)nucleotide bonds E)glycosidic bonds F)hydrogen bonds

Which determines the secondary structure of proteins(alpha-helix and beta-pleating) A)sequence of amino acids making up polypeptides B)interactions between different R-groups C)hydrogen bonding at regular intervals between non specific portions of amino acids making up a polypeptide D)intermingling between two or more polypeptides

Which of the following is not made up of protein or does not contain protein?   A)sequence of amino acids making up polypeptides B)interactions between different R-groups C)hydrogen bonding at regular intervals between non specific portions of amino acids making up a polypeptide D)intermingling between two or more polypeptides

Which two of the following are not true about saturated fats? A)found in animals B)usually solid at room temperature C)more soluble in water than unsaturated fats D)ratio of hydrogen to carbon is somewhat greater than in unsaturated fats E)composed of glycerol and fatty acids F)saturated with double bonds

Explanation / Answer

(1) chemical fusion of monomer into a polymer chain is accomaplished by removal of water and formation of covalent bond between monomer subunits this type of polymerisation is called condensation polymerisation.Answer (C)

(2) covalent bond linking amino acids to each other is called a peptide bond. it is formed when carboxylic(-COOH) group of one amino acid attachs to amino (-NH3) group of other amino acid. Answer (C)

(3) secondary structure is determined by hydrogen bonding at regular intervals between non specific portions of amino acids making up a polypeptide. Answer (C)

(4) interaction with different R- groups doesn't make a polypeptide and is not made up of a protein answer(b)

(5) saturated fats contains single bonds not double bonds(F) and fats are not sluble in water (c) both F and C are wrong about saturated fats

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