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BMB 401 exam 1 material- Questions & Answers
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BMB 401 exam 1 material- Questions & Answers
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BMB 401 exam 1 material- Questions &Answers
The secondary structure of myoglobin is primarily beta sheet loops and coils. TRUE AND
FALSE Correct Ans-false
human myoglobin and the human hemoglobin are paralogs. TRUE OR FALSE Correct Ans-true
myoglobin functions as a tetramer and shows allosteric binding kinetics. TRUE OR
FALSE Correct Ans-false
buffers are weak acids that buffer most effectively at the pKa of the acid, but generally have
buffering capacity within one pH unit above and one pH unit below the acid's pKa. TRUE OR
FALSE Correct Ans-true
at a pH greater than the pKa of an acid, the acid is present at higher concentration than its
conjugate base. TRUE OR FALSE Correct Ans-false
the bicarbonate buffer system is the primary cellular buffering system. TRUE OR
FALSE Correct Ans-false
although they have ionizable groups, free amino acids cannot function as buffers. TRUE OF
FALSE Correct Ans-false
the normal 3-dimensional structure of a single protein chain is called its tertiary structure. TRUE
OR FALSE Correct Ans-true
primary structure of proteins Correct Ans-chain of amino acids
, secondary structure of proteins Correct Ans-alpha helices and beta pleated sheets
tertiary structure of proteins Correct Ans-3D folding pattern on proteins
Quaternary structure of proteins Correct Ans-protein consisting of more than one amino acid
chain
in the lipid bilayer, lipids are held together by covalent bonds to form the lipid membrane. TRUE
OR FALSE Correct Ans-false
the proximal histidine of hemoglobin acts to limit access to the central iron ion, and prevent
superoxide release. TRUE OR FALSE Correct Ans-false
when oxygen leaves the hemoglobin oxygen-binding site as superoxide, the resultant oxidation
state of that iron ion in the heme molecule is 3+. TRUE OR FALSE Correct Ans-true
the primary function of myoglobin is to carry oxygen in the blood. TRUE OR FALSE Correct
Ans-false
The iron in methemoglobin is at the 2+ oxidation state. TRUE OR FALSE Correct Ans-false
In aqueous solution, polar amino acids are most commonly on the outside of a protein, while
non-polar amino acids are generally buries inside the protein, away from the aqueous solution.
TRUE OR FALSE Correct Ans-true
the four elements at he highest mole percent in humans are H,C,N,O. TRUE OR FALSE Correct
Ans-true
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