Deck 10: Biological Macromolecules: The Infrastructure of Life

Question 1

Which one of the following amino acids forms disulfide bonds?

A) Cysteine
B) Threonine
C) Glycine
D) Glutamic acid
E) Valine

Answer 1

A

Question 2

Which of the following amino acid residues act as helix disrupters? Select all that apply.

A) Serine
B) Threonine
C) Glycine
D) Proline
E) Phenylalanine

Answer 2

C,D

Question 3

Which of the following is the name of the type of bond linking monosaccharide units in a sugar?

A) Peptide bond
B) Glycosidic bond
C) Phosphodiester bond
D) Disulfide bond
E) Hydrogen bond

Answer 3

B

Question 4

Which one of the following polymers of glucose is the form in which glucose is stored in the human body?

A) Amylose
B) Amylopectin
C) Cellulose
D) Glycogen
E) Fat

Question 5

Which of the following nitrogenous bases occur in RNA? Select all that apply.

A) Adenine
B) Cytosine
C) Guanine
D) Uracil
E) Thymine

Question 6

Polypeptides are polymers of which group of compounds?

A) Nucleotides
B) Monosaccharides
C) Amino acids
D) Sterols
E) Alcohols

Question 7

A nucleotide has the following general structure. What are the names of the components labeled 1-3 in this structure?

Question 8

Sugars possess which two of the following functional groups?

A) Carbonyl group
B) Amino group
C) Thiol group
D) Alkoxyl group
E) Hydroxy group

Question 9

Fats and oils are types of which organic compound?

A) Triacylglycerols
B) Glycerophospholipids
C) Fatty acids
D) Polysaccharides
E) Polypeptides

Question 10

What makes fatty acids unique as compared to other carboxylic acids?

A) They have unusually highly-saturated alkyl groups
B) They have unusually long alkyl groups
C) Their alkyl groups are cyclic in structure
D) Their alkyl groups are unusually highly branched
E) They lack an alkyl group

Question 11

An amino acid possesses which two of the following functional groups?

A) Amino group
B) Thiol group
C) Amide group
D) Carboxyl group
E) Alkoxy group

Question 12

Which of the following is the correct general structure for an amino acid?

A)
B)
C)
D)
E)

Question 13

Which of the following is the correct description of a saturated fat?

A) A fat comprising fatty acids that contain one double carbon-carbon bond
B) A fat comprising fatty acids that contain only single carbon-carbon bond
C) A fat comprising fatty acids that contain more than one double carbon-carbon bond
D) A fat comprising fatty acids that contain alternating single and double carbon-carbon bonds

Question 14

Which of the following statements about triacylglycerols is true?

A) Triacylglycerols with high saturated fatty acid content exist as solids at room temperature
B) Triacylglycerols with high unsaturated fatty acid content are known as fats
C) Triacylglycerols are also called fatty acids
D) Triacylglycerols contain only single carbon-carbon bonds

Question 15

Which of the following statements about nucleotides and nucleic acids are false? Select all that apply.

A) deoxyribose
B) The nitrogenous base of a nucleotide is hydrophobic
C) Nucleotides join to form nucleic acids via peptide bonds
D) The sugar and phosphate groups of a nucleotide lie on the inside of the DNA helix
E) The two base pairs in DNA are adenine : thymine and cytosine : guanine

Question 16

Match the following structural formulae of amino acid side chains with the correct names of the amino acids that possess them.
-Valine

A)
B)
C)
D)
E)
F)

Question 17

Match the following structural formulae of amino acid side chains with the correct names of the amino acids that possess them.
-Phenylalanine

A)
B)
C)
D)
E)
F)

Question 18

Match the following structural formulae of amino acid side chains with the correct names of the amino acids that possess them.
-Methionine

A)
B)
C)
D)
E)
F)

Question 19

Match the following structural formulae of amino acid side chains with the correct names of the amino acids that possess them.
-Serine

A)
B)
C)
D)
E)
F)

Question 20

Match the following structural formulae of amino acid side chains with the correct names of the amino acids that possess them.
-Asparagine

A)
B)
C)
D)
E)
F)

Question 21

Match the following structural formulae of amino acid side chains with the correct names of the amino acids that possess them.
-Aspartic acid

A)
B)
C)
D)
E)
F)

Question 22

Match the following types of bond with the organic compounds that they are found within.
-Phosphodiester bond

A) Polypeptides
B) Nucleic acids
C) Carbohydrates

Question 23

Match the following types of bond with the organic compounds that they are found within.
-Glycosidic bond

A) Polypeptides
B) Nucleic acids
C) Carbohydrates

Question 24

Nucleotides have which one of the following functions, in addition to being components of the nucleic acids DNA and RNA?

A) They transport cholesterol in the bloodstream
B) They act as a hormone, triggering the breakdown of glycogen to release glucose
C) They form a component of the cell membrane, and help to maintain its fluidity
D) They act as a store of energy to help power biochemical reactions

Question 25

Which two of the following are the names of the two groups of compounds to which the nucleotide bases belong?

A) Porphyrins
B) Purines
C) Pyrimidines
D) Pyrones
E) Phosphates

Question 26

Which of the following statements about cellulose are false? Select all that apply.

A) Cellulose is a polymer of glucose.
B) Cellulose has a branched-chain structure.
C) Cellulose cannot be digested by humans.
D) Cellulose is the form in which glucose is stored in plants.
E) Cellulose is toxic to humans.

Question 27

Which of the following molecules do not exhibit quaternary structure? Select any that apply.

A) Haemoglobin
B) Glycine
C) The ribosome
D) tRNA
E) Cholesterol