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Amino Acids and Fatty Acids

See attachments for full descriptions of the problems

37. The most basic amino acid is ________
38. The most acidic amino acid is ________
39. The reaction below (see attached) is an example of:
a. nucleophilic addition
b. electrophilic addition
c. nucleophilic acyl substitution
d. electrophilic substitution

Use the following terms for the next few questions:
a. Ligases
b. Fibrous proteins
c. Conjugated protein
d. Hydrolases
e. Simple protein
f. Globular proteins
g. Lyases
h. Transferases

40. _________ Proteins which yield other compounds in addition to amino acids on hydrolysis
41. _________ Proteins which are tough and insoluble in water
42. _________ Enzymes which catalyze the breaking away of a small molecule such as H2O from a substrate.
43. _________ Enzymes which catalyze the bonding together of two substrates.

Match the diagrams in the attachment to:

44. starting material for fatty acid biosynthesis
45. a phosophoglyceride
46. a prostaglandin
47. monoterpene precursor
48. a triglyceride
49. a sphingolipid
50. a soap
51. a cephalin
52. a steroid
53. a sesquiterpene

54. Abietic acid is an example of:
a. a monoterpene
b. a sesquiterpene
c. a diterpene
d. a sesterpene
55. Draw the most stable chair conformation of terpin hydrate.
56. Mixtures of esters of long-chain carboxylic acids with long-chain alcohols are called:
a. waxes
b. fats and oils
c. fatty acids
d. soaps
57. Chemically, these are triacylglycerols, triesters of glycerol with three long-chain carboxylic acids.
a. waxes
b. fats and oils
c. fatty acids
d. soaps
58. The major lipid components of cell membranes are:
a. sphingolipids
b. prostaglandins
c. phosphoglycerides
d. terpenoids
59. A group of C20 lipids that contain a five-membered ring with two long side chains
a. sphingolipids
b. prostaglandins
c. phosophoglycerides
d. terpenoids
60. Cell membranes, which form an effective barrier to the passage of ions and other components into and out of the cell, are:
a. fatty acid esters
b. tricacylglycerols
c. lipid bilayers
d. micelles

Attachments

Solution Preview

Twenty Three Biochemistry Test Review Questions with Structures
Proteins and Lipid Structures!!!

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37. Arginine is the most basic amino acid because it has the highest isoelectric point. That's the pH at which the molecule is neutral.

38. The most acidic is, therefore, glutamic acid.

39. The reaction is a nucleophilic addition ...

Solution Summary

A selection of organic chemistry problems involving amino acids, fill in the blanks, matching and fatty acids.

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