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BCH 369 Exam 2 (Final Review Grabner) questions well answered to pass
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BCH 369 Exam 2 (Final Review Grabner) questions well answered to pass
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BCH 369 Exam 2 (Final Review Grabner)Which of the following amino acids could bind to the specificity pocket of Trypsin?
A) Gly B) Lys C) Asp D) Gln E) Val - correct answer ✔✔B) Lys
The chymotrypsin/trypsin family of proteases has which combination of amino acids in the active site
A) threonine, histidine, aspartic acid
B) serine, arginine, glutamic acid
C) serine, histidine, glutamic acid
D) serine, histidine, aspartic acid
E) threonine, histidine, aspartic acid - correct answer ✔✔D) serine, histidine, aspartic acid
Which of the following would be a proper representation of enzyme velocity?
A) v = (-) d[P]/dt
B) v = (+) d[P]/dt
C) v = (-) d[S]/dt
D) v = (+) d[S]/dt
E) Either B or C - correct answer ✔✔E) Either B or C
The rate constant associated with the reaction below would be
2A --> B
A) Zero order B) First order C) Second order D) Third order - correct answer ✔✔C) Second order
Which type of secondary structure present in integral membrane proteins is readily detectable in the
primary structure?
A) membrane-spanning α helix B) membrane-spanning β sheet - correct answer ✔✔A) membrane-
spanning α helix
, Which of the following lipid types are not found in animal membranes?
A) phosphoglycerides
B) cholesterol
C) triacylglycerols
D) glycolipids
E) sphingolipids - correct answer ✔✔C) triacylglycerols
A molecule moves across a membrane from a lower to a higher concentration with the aid of a
membrane
protein. This process is known as:
A) chemiosmotic coupling
C) active transport
B) diffusion
D) facilitated transport - correct answer ✔✔C) active transport
Which of the following will cause the opening or closing of a gated ion channel?
A) pH change
B) phosphorylation
C) voltage change
D) ligand binding
E) all of the above - correct answer ✔✔E) all of the above
Which amino acid in the aquaporin channel hydrogen bonds with water to prevent the movement of
protons?
A) Asn B) Leu C) Phe D) Val E) Ile - correct answer ✔✔A) Asn
Which of the following second messengers would NOT be found free floating in the cytosol?
A) DAG B) Ca2+ ions C) cAMP D) IP3 - correct answer ✔✔A) DAG
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