BMB 401 Exam 1 Practice exam Questions With Complete Solutions
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Course
BMB 401
Institution
BMB 401
Why is the distal histidine important for proper red blood cell function? - ️️Steric
hinderance to large molecules attempting to enter iron binding pocket. Help stabilize O2
leaving pocket to make sure it's not superoxide
What limits the rotation about a peptide bond? - ️️Peptide bonds h...
BMB 401 Exam 1 Practice exam
questions
Why is the distal histidine important for proper red blood cell function? - ✔️✔️Steric
hinderance to large molecules attempting to enter iron binding pocket. Help stabilize O2
leaving pocket to make sure it's not superoxide
What limits the rotation about a peptide bond? - ✔️✔️Peptide bonds have partial
double bond characteristics
What is the primary intracellular buffering system? - ✔️✔️Phosphate buffering system
The primary blood buffering system is what? - ✔️✔️Carbonic acid/carbonate system
For ∆G > 0 and ∆G < 0, which is endothermic/exothermic? - ✔️✔️∆G > 0 =
endothermic
∆G < 0 = exothermic
Leghemoglobin and human myoglobin are orthologs, paralogs, or homologs? -
✔️✔️Orthologs
Which histidine is a coordination site for iron in the heme prosthetic group in myoglobin
and hemoglobin? - ✔️✔️The proximal histidine
What does 2,3-BPG bind to? - ✔️✔️Histidine residues in hemoglobin
Which protein structure is a beta turn part of? (primary, secondary, tertiary) -
✔️✔️Secondary
During transcription, is RNA read in the 5' to 3' direction, or the 3' to 5' direction? -
✔️✔️3' to 5'
Why might mutations leading to differences in DNA sequence not lead to differences in
the eventual amino acid sequence? - ✔️✔️Because the genetic code may be
degenerate
The primary and tertiary structures of myoglobin and what other molecule show high
degrees homology? - ✔️✔️beta-globin
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