Mizzou Bio 1500 Final Exam (Schulz)
Questions and Graded Answers.
What are the major functions of a protein? - Structural molecule to help define cell shape,
transporting molecules within cells, acting as an enzyme to speed up chemical reactions, and
acting as a signal between cells
What are the major functions of a carbohydrate? - Energy storage molecule, acting as
signal between cells, acting as a structural molecule to help define cell shape, and acting as a
component of a cell membrane
What are the major functions of lipids? - Acting as signals between cells, acting as an
energy storage molecule, excludes large or highly charged molecules from entering or exiting
cells, component of cell membrane (phospholipid bi-layer)
What is the major function of a nucleic acid? - Information storage molecule
Which of the following is not a polymer made up of individual monomers?
A) Carbs
B) Proteins
C) Fatty Acids
D) Nucleic Acids - C
Which of these statements is true?
A) Almost all organisms have a phospholipid bilayer that makes up a major component of their
cell membrane
B) Almost all organisms use the same 4 nucleotides to encode their genetic information
C) Almost all organisms use the same 20 amino acids to create proteins
, D) Almost all organisms use carbs as an energy source
E) All of the above - E
Peptide Bond - forms between the carboxyl group of one amino acid and the amino group
of another amino acid
What type of interaction stabilizes the a-helix and the B-pleated sheet of proteins? -
Hydrogen bonds
What type of interaction is directly responsible for the formation of secondary structure? -
Hydrogen bonds between sections of the polypeptide backbone
The tertiary structure of a protein is - unique 3 dimensional shape of the fully folded
polypeptide
All covalent bonds in a protein are disrupted, what level of structure is preserved? - No
protein structure
Sodium channels are proteins that control the passage of sodium ions across the cell membrane.
The protein forms a pore, or opening, in the membrane. You isolate what you think are two
different molecules of sodium channel, and determine that one of the proteins has a smaller pore
diameter than the second therefore allows fewer sodium ions to cross the membrane than the
other. which of the following do you conclude?
A) These two sodium channels likely have different primary structures
B) These two sodium channels likely have different secondary structures
C) These two sodium channels likely have different tertiary structures
D) All of the above - D
Nucleic Acids are made up of what - Nucleotides
Questions and Graded Answers.
What are the major functions of a protein? - Structural molecule to help define cell shape,
transporting molecules within cells, acting as an enzyme to speed up chemical reactions, and
acting as a signal between cells
What are the major functions of a carbohydrate? - Energy storage molecule, acting as
signal between cells, acting as a structural molecule to help define cell shape, and acting as a
component of a cell membrane
What are the major functions of lipids? - Acting as signals between cells, acting as an
energy storage molecule, excludes large or highly charged molecules from entering or exiting
cells, component of cell membrane (phospholipid bi-layer)
What is the major function of a nucleic acid? - Information storage molecule
Which of the following is not a polymer made up of individual monomers?
A) Carbs
B) Proteins
C) Fatty Acids
D) Nucleic Acids - C
Which of these statements is true?
A) Almost all organisms have a phospholipid bilayer that makes up a major component of their
cell membrane
B) Almost all organisms use the same 4 nucleotides to encode their genetic information
C) Almost all organisms use the same 20 amino acids to create proteins
, D) Almost all organisms use carbs as an energy source
E) All of the above - E
Peptide Bond - forms between the carboxyl group of one amino acid and the amino group
of another amino acid
What type of interaction stabilizes the a-helix and the B-pleated sheet of proteins? -
Hydrogen bonds
What type of interaction is directly responsible for the formation of secondary structure? -
Hydrogen bonds between sections of the polypeptide backbone
The tertiary structure of a protein is - unique 3 dimensional shape of the fully folded
polypeptide
All covalent bonds in a protein are disrupted, what level of structure is preserved? - No
protein structure
Sodium channels are proteins that control the passage of sodium ions across the cell membrane.
The protein forms a pore, or opening, in the membrane. You isolate what you think are two
different molecules of sodium channel, and determine that one of the proteins has a smaller pore
diameter than the second therefore allows fewer sodium ions to cross the membrane than the
other. which of the following do you conclude?
A) These two sodium channels likely have different primary structures
B) These two sodium channels likely have different secondary structures
C) These two sodium channels likely have different tertiary structures
D) All of the above - D
Nucleic Acids are made up of what - Nucleotides
