Lehninger Principles of Biochemistry
Ch 1-6
A 36 residue peptide bureaucracy an α-helix, approximately how lengthy is that this helix?
A. 5.4 Å
B. Five.4 nm
C. 2.Four Å
D. 2.4 nm
E. 36 Å - ANS-B. 5.Four nm
A new protein akin to myosin turned into stated. Unlike myosin, it binds calcium. Its isoelectric
point and molecular weight are very much like those of myosin. Which strategies could pleasant
separate the new protein from myosin if those proteins have been within the equal buffer
solution?
A. Gel exclusion chromatography
B. Ion alternate chromatography
C. Hydrophobic interaction chromatography
D. Affinity chromatography
E. Tandem mass spectroscopy - ANS-D. Affinity chromatography
Amino acids are the fundamental constructing blocks of proteins and nucleosides are the
monomeric devices of nucleic acids. Do you settle?
A. Yes
B. N - ANS-A. Yes
An enzyme accepts H+ from hydronium and transfers it to an amine group of the substrate. The
end result is an growth inside the fee of release of the product. This is an example of which of
the following?
A. Induced fit
B. General acid catalysis
C. Covalent catalysis
D. Entropy reduction
E. Specific acid catalysis - ANS-B. General acid catalysis
At what pH could an amino acid now not migrate in an electric subject?
A. PK1
B. PK2
C. PI
D. PKR - ANS-C. PI
, Based on our discussion, which of the following peptides would be most probably to form an
α-helix?
A. AA
B. ALA
C. AAL
D. AALALA
E. AAGGAA - ANS-D. AALALA
Certain amino acids destabilize or save you formation of alpha-helices. Which amino acid is
much more likely to be discovered in those structures primarily based on its fee and
R-organization size?
A. Glycine
B. Proline
C. A series of numerous Glutamate
D. A collection of numerous Lysine
E. Alanine - ANS-E. Alanine
Consider the helical wheel diagram. If residues 2,three,6,9,10 correspond to hydrophobic amino
acids and the others are polar or charged, which of the subsequent terms satisfactory describes
the helix?
A.Non-polar
B.Amphipathic
C.Hydrophilic
D.Hydrophobic
E. Unstable - ANS-B.Amphipathic
Detergent molecules regularly are made of a polar head organization and a unmarried lengthy
acyl chain. They form micelles in water. Glycerophospholipids generally have two long acyl
chains certain to a glycerol spine. When located in water might a glycerophospholipid be
maximum probably to ...
A. Be unfastened in answer as single molecules
B. Form micelles
C. Form bilayers/vesicles
D. Form unorganized aggregates
E. None of these is probably - ANS-C. Form bilayers/vesicles
For the response below A + B <-> C If you upload a catalyst to this response you will have more
C at equilibrium True or False? - ANS-False
Glutamate has three ionizable agencies, the carboxy organization with pK1 of 2.19, the amino
organization with a pK2 of 9.Sixty seven, and the facet chain carboxy institution with pKR of
Ch 1-6
A 36 residue peptide bureaucracy an α-helix, approximately how lengthy is that this helix?
A. 5.4 Å
B. Five.4 nm
C. 2.Four Å
D. 2.4 nm
E. 36 Å - ANS-B. 5.Four nm
A new protein akin to myosin turned into stated. Unlike myosin, it binds calcium. Its isoelectric
point and molecular weight are very much like those of myosin. Which strategies could pleasant
separate the new protein from myosin if those proteins have been within the equal buffer
solution?
A. Gel exclusion chromatography
B. Ion alternate chromatography
C. Hydrophobic interaction chromatography
D. Affinity chromatography
E. Tandem mass spectroscopy - ANS-D. Affinity chromatography
Amino acids are the fundamental constructing blocks of proteins and nucleosides are the
monomeric devices of nucleic acids. Do you settle?
A. Yes
B. N - ANS-A. Yes
An enzyme accepts H+ from hydronium and transfers it to an amine group of the substrate. The
end result is an growth inside the fee of release of the product. This is an example of which of
the following?
A. Induced fit
B. General acid catalysis
C. Covalent catalysis
D. Entropy reduction
E. Specific acid catalysis - ANS-B. General acid catalysis
At what pH could an amino acid now not migrate in an electric subject?
A. PK1
B. PK2
C. PI
D. PKR - ANS-C. PI
, Based on our discussion, which of the following peptides would be most probably to form an
α-helix?
A. AA
B. ALA
C. AAL
D. AALALA
E. AAGGAA - ANS-D. AALALA
Certain amino acids destabilize or save you formation of alpha-helices. Which amino acid is
much more likely to be discovered in those structures primarily based on its fee and
R-organization size?
A. Glycine
B. Proline
C. A series of numerous Glutamate
D. A collection of numerous Lysine
E. Alanine - ANS-E. Alanine
Consider the helical wheel diagram. If residues 2,three,6,9,10 correspond to hydrophobic amino
acids and the others are polar or charged, which of the subsequent terms satisfactory describes
the helix?
A.Non-polar
B.Amphipathic
C.Hydrophilic
D.Hydrophobic
E. Unstable - ANS-B.Amphipathic
Detergent molecules regularly are made of a polar head organization and a unmarried lengthy
acyl chain. They form micelles in water. Glycerophospholipids generally have two long acyl
chains certain to a glycerol spine. When located in water might a glycerophospholipid be
maximum probably to ...
A. Be unfastened in answer as single molecules
B. Form micelles
C. Form bilayers/vesicles
D. Form unorganized aggregates
E. None of these is probably - ANS-C. Form bilayers/vesicles
For the response below A + B <-> C If you upload a catalyst to this response you will have more
C at equilibrium True or False? - ANS-False
Glutamate has three ionizable agencies, the carboxy organization with pK1 of 2.19, the amino
organization with a pK2 of 9.Sixty seven, and the facet chain carboxy institution with pKR of
