BCHM 307 - Exam 1 ~Purdue
*The lower the pKa the lower the pH. Thus, the lower the pKa the stronger the acid - ANS-True
A base found exclusively in DNA is thymine, while uracil is found only in RNA - ANS-True
A genomic library contains all of an organisms DNA - ANS-True
A plot of the binding of oxygen to myoglobin as a function of pO2 gives a _____ shape; a similar
plot for hemoglobin gives a _____ shape. - ANS-hyperbolic; sigmoidal
A spontaneous process has a delta G that is... - ANS-Negative
An A-T base pair contains______ H bonds, an C-G base pair contains _______ H bonds. -
ANS-2
3
At physiological pH, all amino acids have at least ___ charged groups. - ANS-2
Bacteria and archaea typically have fewer than ________ genes while plants and animals
typically have greater than ___________ genes. - ANS-5,000; 10,000
Chargaff's Rule - ANS-A+G=C+T
Disulfide bonds form between two residues of which amino acid? - ANS-Cys
During the formation of microfilaments, which of the following occurs? - ANS-ATP hydrolysis is
catalyzed by F-actin
Fatty acid anions most commonly assemble into micelles in aqueous solution - ANS-True
If a phosphate buffer (pK=6.82) was formulated such that its pH was 7.3, it would be best suited
to buffer against _____. If instead, it was formulated such that its pH was 6.3, it would be best
suited to buffer against _____. - ANS-acid; base
In an aqueous solution, if the [OH-] is 3.0x10^-5 M. What is the [H+]? - ANS-3.3x10^-10
In DNA, the ribose derivative lacks an __________ on carbon __________. - ANS-alcohol; 2
In humans how much of the genome encodes for proteins? - ANS-1.5%
*The lower the pKa the lower the pH. Thus, the lower the pKa the stronger the acid - ANS-True
A base found exclusively in DNA is thymine, while uracil is found only in RNA - ANS-True
A genomic library contains all of an organisms DNA - ANS-True
A plot of the binding of oxygen to myoglobin as a function of pO2 gives a _____ shape; a similar
plot for hemoglobin gives a _____ shape. - ANS-hyperbolic; sigmoidal
A spontaneous process has a delta G that is... - ANS-Negative
An A-T base pair contains______ H bonds, an C-G base pair contains _______ H bonds. -
ANS-2
3
At physiological pH, all amino acids have at least ___ charged groups. - ANS-2
Bacteria and archaea typically have fewer than ________ genes while plants and animals
typically have greater than ___________ genes. - ANS-5,000; 10,000
Chargaff's Rule - ANS-A+G=C+T
Disulfide bonds form between two residues of which amino acid? - ANS-Cys
During the formation of microfilaments, which of the following occurs? - ANS-ATP hydrolysis is
catalyzed by F-actin
Fatty acid anions most commonly assemble into micelles in aqueous solution - ANS-True
If a phosphate buffer (pK=6.82) was formulated such that its pH was 7.3, it would be best suited
to buffer against _____. If instead, it was formulated such that its pH was 6.3, it would be best
suited to buffer against _____. - ANS-acid; base
In an aqueous solution, if the [OH-] is 3.0x10^-5 M. What is the [H+]? - ANS-3.3x10^-10
In DNA, the ribose derivative lacks an __________ on carbon __________. - ANS-alcohol; 2
In humans how much of the genome encodes for proteins? - ANS-1.5%
