BCH 361 FINAL REVIEW QUESTIONS WITH VERIFIED
ANSWERS
Which of the following is not a component of biomolecules? - Answers - Chlorine
The functional group present in the following molecule is called - Answers - amide
The following is an example of which reaction class - Answers - Nucleophilic
substitution
Which of the following is the fundamental structural unit of living organisms - Answers -
Cell
Which of the of the following small molecules do not form biopolymers - Answers - Fatty
Acids
The redox cofactor ubiquinone is necessary for converting energy from electron
transport to the form of chemical bond energy in ATP. IN which organelle - Answers -
Mitochondria
Ribosomes, the protein synthesis complex, are often bound to - Answers - Rough
endoplasmic reticulum
During exocytosis membrane-bound vesicles migrate from the Golgi apparatus to the -
Answers - Plasma membrane
The property of water that is most responsible for its unique thermal properties and
utility as a biological solvent is - Answers - hydrogen bonding
Osmosis occurs to relieve concentration graidents. If water rushes into the cell they
swell and burst. This process is known as - Answers - hemolysis
Which of the following is true of weak acids dissolved in water - Answers - They are
partially ionized in water
Which of the following would not form a suitable buffer - Answers - Hydrochloric
acid/chloride
Buffering capacity is directly proportional to which of the following factors - Answers -
Concentration of both components of the buffer
, Which of the following thermodynamic properties is the most useful criterion of
spontaneity - Answers - Gibb's Free energy
For an endothermic reaction to be spontaneous, which of the following must be true?
a. heat must be given off by the reaction
b. energy must be added to the reaction
c. the temperature must be very low
d. the entropy must increase substantially
e. none of the above are true - Answers - The entropy must increase substantially
Which of the following is described by the first law of thermodynamics - Answers -
Enthalpy
What type of bond is being cleaved during the conversion of ATP to ADP - Answers -
Phosphoanhydride
An organism at equilbrium is said to be __________. - Answers - dead
Which of the following amino acids does not exhibit chirality - Answers - Glycine
Name the following amino acid - Answers - Tryptophan
An amino acid has a low pI value. Which of the following amino acids is it likely to be -
Answers - Aspartic acid
Using the following figure of the titration of glutamate, determine the charge on the
molecule between a pH of 2.2 and 4.3 - Answers - 0
The R-groups of which of the following pairs of amino acids could participate in the
formation of salt bridge electrostatic interaction - Answers - Lysine and Glutamate
Beat-pleated sheets are associated with what level of protein structure - Answers -
Secondary
The overall three-dimensional structure of a polypeptide is referred to as - Answers -
tertiary structure
Invariant amino acids in a protein are presumed: - Answers - To be essential to the
structure and function of the protein
Reducing agent contribute to denaturing proteins by disrupting which of the following -
Answers - Disulfide bonds
The geometric character of the peptide bond could best be described as - Answers -
rigid and planar
ANSWERS
Which of the following is not a component of biomolecules? - Answers - Chlorine
The functional group present in the following molecule is called - Answers - amide
The following is an example of which reaction class - Answers - Nucleophilic
substitution
Which of the following is the fundamental structural unit of living organisms - Answers -
Cell
Which of the of the following small molecules do not form biopolymers - Answers - Fatty
Acids
The redox cofactor ubiquinone is necessary for converting energy from electron
transport to the form of chemical bond energy in ATP. IN which organelle - Answers -
Mitochondria
Ribosomes, the protein synthesis complex, are often bound to - Answers - Rough
endoplasmic reticulum
During exocytosis membrane-bound vesicles migrate from the Golgi apparatus to the -
Answers - Plasma membrane
The property of water that is most responsible for its unique thermal properties and
utility as a biological solvent is - Answers - hydrogen bonding
Osmosis occurs to relieve concentration graidents. If water rushes into the cell they
swell and burst. This process is known as - Answers - hemolysis
Which of the following is true of weak acids dissolved in water - Answers - They are
partially ionized in water
Which of the following would not form a suitable buffer - Answers - Hydrochloric
acid/chloride
Buffering capacity is directly proportional to which of the following factors - Answers -
Concentration of both components of the buffer
, Which of the following thermodynamic properties is the most useful criterion of
spontaneity - Answers - Gibb's Free energy
For an endothermic reaction to be spontaneous, which of the following must be true?
a. heat must be given off by the reaction
b. energy must be added to the reaction
c. the temperature must be very low
d. the entropy must increase substantially
e. none of the above are true - Answers - The entropy must increase substantially
Which of the following is described by the first law of thermodynamics - Answers -
Enthalpy
What type of bond is being cleaved during the conversion of ATP to ADP - Answers -
Phosphoanhydride
An organism at equilbrium is said to be __________. - Answers - dead
Which of the following amino acids does not exhibit chirality - Answers - Glycine
Name the following amino acid - Answers - Tryptophan
An amino acid has a low pI value. Which of the following amino acids is it likely to be -
Answers - Aspartic acid
Using the following figure of the titration of glutamate, determine the charge on the
molecule between a pH of 2.2 and 4.3 - Answers - 0
The R-groups of which of the following pairs of amino acids could participate in the
formation of salt bridge electrostatic interaction - Answers - Lysine and Glutamate
Beat-pleated sheets are associated with what level of protein structure - Answers -
Secondary
The overall three-dimensional structure of a polypeptide is referred to as - Answers -
tertiary structure
Invariant amino acids in a protein are presumed: - Answers - To be essential to the
structure and function of the protein
Reducing agent contribute to denaturing proteins by disrupting which of the following -
Answers - Disulfide bonds
The geometric character of the peptide bond could best be described as - Answers -
rigid and planar
