UNE Biochemistry Week 1 UPDATED
Questions with CORRECT Answers
primary structure - CORRECT ANSWER - linear sequence of amino acids in polypeptide
chain
amino terminus (N-terminus) to the carboxyl terminus (C-terminus) - CORRECT
ANSWER - primary structures are written from the _______________ to the
______________
alpha helices, beta pleated sheets, and bends/turns/or loops - CORRECT ANSWER - what
are the types of secondary structures
alpha helix (secondary structure) - CORRECT ANSWER - formed when the carbonyl
group of peptide bond forms a hydrogen bond with the amide nitrogen of another peptide bond
four amino acids down the polypeptide chain (what kind of structure is this?)
the peptide backbone is formed by hydrogen bonds (alpha helix structure) - CORRECT
ANSWER - the ________ _______ is formed by __________ ___________ between each
carbonyl oxygen atom and the amide hydrogen located 4 residues down the chain. This unique
bonding sequence results in a structure that is highly compact and rigid.
alpha helices - CORRECT ANSWER - comprises about a third of all secondary structures
proline and "kink" - CORRECT ANSWER - ____ is not typically found in these structures
as it forms a non-traditional peptide bond and adds a "___" in the helix
beta sheets are formed when beta strands are connected laterally (etc.) - CORRECT
ANSWER - are formed when _______ strands are connected laterally by at least two or
three backbone hydrogen bonds
, hydrogen bonds and NH groups - CORRECT ANSWER - the beta strands are connected
horizontally by ___________ bonds formed between C=O groups of either strand and _____
groups of either strand
R groups - CORRECT ANSWER - the _____ ________ always protrude to the top or
bottom
hydrophilic and a hydrophobic side - CORRECT ANSWER - depending on the R groups
on the sides of the beta, the sheet may have a ________ and a _________ side.
exposed on the surface of the protein to the polar H2O solvent - CORRECT ANSWER -
for beta pleated sheets that have two sides, the hydrophilic side will be exposed where and to
what?
will be buried in the protein and only RARELY exposed to the polar H2O solvent - CORRECT
ANSWER - for beta pleated sheets that have two sides, the hydrophobic side will be
where? is it ever exposed to the H2O solvent?
supersecondary structures - CORRECT ANSWER - tertiary structures can also be called
what?
tertiary structure - CORRECT ANSWER - the total 3D conformation of an entire
polypeptide chain including interactions between alpha-helices, beta-sheets, and any other loops,
turns, or bends
bends, turns, or loops - CORRECT ANSWER - short stretches/areas of the polypeptide
chain form these structures that are stabilized by hydrogen bonds (these are not random)
rossman fold - CORRECT ANSWER - give an example of a tertiary structure
structural domains - CORRECT ANSWER - defined as a section of protein sufficient to
perform a particular chemical or physical task
Questions with CORRECT Answers
primary structure - CORRECT ANSWER - linear sequence of amino acids in polypeptide
chain
amino terminus (N-terminus) to the carboxyl terminus (C-terminus) - CORRECT
ANSWER - primary structures are written from the _______________ to the
______________
alpha helices, beta pleated sheets, and bends/turns/or loops - CORRECT ANSWER - what
are the types of secondary structures
alpha helix (secondary structure) - CORRECT ANSWER - formed when the carbonyl
group of peptide bond forms a hydrogen bond with the amide nitrogen of another peptide bond
four amino acids down the polypeptide chain (what kind of structure is this?)
the peptide backbone is formed by hydrogen bonds (alpha helix structure) - CORRECT
ANSWER - the ________ _______ is formed by __________ ___________ between each
carbonyl oxygen atom and the amide hydrogen located 4 residues down the chain. This unique
bonding sequence results in a structure that is highly compact and rigid.
alpha helices - CORRECT ANSWER - comprises about a third of all secondary structures
proline and "kink" - CORRECT ANSWER - ____ is not typically found in these structures
as it forms a non-traditional peptide bond and adds a "___" in the helix
beta sheets are formed when beta strands are connected laterally (etc.) - CORRECT
ANSWER - are formed when _______ strands are connected laterally by at least two or
three backbone hydrogen bonds
, hydrogen bonds and NH groups - CORRECT ANSWER - the beta strands are connected
horizontally by ___________ bonds formed between C=O groups of either strand and _____
groups of either strand
R groups - CORRECT ANSWER - the _____ ________ always protrude to the top or
bottom
hydrophilic and a hydrophobic side - CORRECT ANSWER - depending on the R groups
on the sides of the beta, the sheet may have a ________ and a _________ side.
exposed on the surface of the protein to the polar H2O solvent - CORRECT ANSWER -
for beta pleated sheets that have two sides, the hydrophilic side will be exposed where and to
what?
will be buried in the protein and only RARELY exposed to the polar H2O solvent - CORRECT
ANSWER - for beta pleated sheets that have two sides, the hydrophobic side will be
where? is it ever exposed to the H2O solvent?
supersecondary structures - CORRECT ANSWER - tertiary structures can also be called
what?
tertiary structure - CORRECT ANSWER - the total 3D conformation of an entire
polypeptide chain including interactions between alpha-helices, beta-sheets, and any other loops,
turns, or bends
bends, turns, or loops - CORRECT ANSWER - short stretches/areas of the polypeptide
chain form these structures that are stabilized by hydrogen bonds (these are not random)
rossman fold - CORRECT ANSWER - give an example of a tertiary structure
structural domains - CORRECT ANSWER - defined as a section of protein sufficient to
perform a particular chemical or physical task
