BIOCHEM 501 EXAM 1 UW MADISON QUESTIONS AND ANSWERS
Glycine (Gly/G) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Alanine (Ala/A) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Proline (Pro/P) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Valine (Val/V) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Leucine (Leu/L) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Isoleucine (Ile/I) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Methionine (Met/M) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Phenylalanine (Phe/F) - CORRECT ANSWER✅✅Aromatic R groups
Tyrosine (Tyr/Y) - CORRECT ANSWER✅✅Aromatic R groups
Tryptophan (Trp/W) - CORRECT ANSWER✅✅Aromatic R groups
Serine (Ser/S) - CORRECT ANSWER✅✅Polar, uncharged R groups
Threonine (Thr/T) - CORRECT ANSWER✅✅Polar, uncharged R groups
Cysteine (Cys/C) - CORRECT ANSWER✅✅Polar, uncharged R groups
, Asparagine (Asn/N) - CORRECT ANSWER✅✅Polar, uncharged R groups
Glutamine (Gln/Q) - CORRECT ANSWER✅✅Polar, uncharged R groups
Lysine (Lys/K) - CORRECT ANSWER✅✅Positively charged R groups
Arginine (Arg/R) - CORRECT ANSWER✅✅Positively charged R groups
Histidine (His/H) - CORRECT ANSWER✅✅Positively charged R groups
Aspartate (Asp/D) - CORRECT ANSWER✅✅Negatively charged R groups
Glutamate (Glu/E) - CORRECT ANSWER✅✅Negatively charged R groups
What is the maximum number of hydrogen bonds that water can form? - CORRECT ANSWER✅✅4
The strongest hydrogen bonds have angles of ________. - CORRECT ANSWER✅✅180 degrees
The spontaneous clustering of lipids is driven by an energetically favorable increase in the _______ of
water. - CORRECT ANSWER✅✅Entropy
Phosphoric acid has a pKa of 2.1. At what pH will 75% of phosphoric acid be in the conjugate base form?
math hints: log 3 = 0.5 and log 0.33 = -0.5 - CORRECT ANSWER✅✅2.6
All of the amino acids are chiral except: - CORRECT ANSWER✅✅Glycine
Which amino acids are negatively charged at a neutral pH? - CORRECT ANSWER✅✅Glutamate,
aspartate
Glycine (Gly/G) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Alanine (Ala/A) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Proline (Pro/P) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Valine (Val/V) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Leucine (Leu/L) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Isoleucine (Ile/I) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Methionine (Met/M) - CORRECT ANSWER✅✅Nonpolar, aliphatic R Groups
Phenylalanine (Phe/F) - CORRECT ANSWER✅✅Aromatic R groups
Tyrosine (Tyr/Y) - CORRECT ANSWER✅✅Aromatic R groups
Tryptophan (Trp/W) - CORRECT ANSWER✅✅Aromatic R groups
Serine (Ser/S) - CORRECT ANSWER✅✅Polar, uncharged R groups
Threonine (Thr/T) - CORRECT ANSWER✅✅Polar, uncharged R groups
Cysteine (Cys/C) - CORRECT ANSWER✅✅Polar, uncharged R groups
, Asparagine (Asn/N) - CORRECT ANSWER✅✅Polar, uncharged R groups
Glutamine (Gln/Q) - CORRECT ANSWER✅✅Polar, uncharged R groups
Lysine (Lys/K) - CORRECT ANSWER✅✅Positively charged R groups
Arginine (Arg/R) - CORRECT ANSWER✅✅Positively charged R groups
Histidine (His/H) - CORRECT ANSWER✅✅Positively charged R groups
Aspartate (Asp/D) - CORRECT ANSWER✅✅Negatively charged R groups
Glutamate (Glu/E) - CORRECT ANSWER✅✅Negatively charged R groups
What is the maximum number of hydrogen bonds that water can form? - CORRECT ANSWER✅✅4
The strongest hydrogen bonds have angles of ________. - CORRECT ANSWER✅✅180 degrees
The spontaneous clustering of lipids is driven by an energetically favorable increase in the _______ of
water. - CORRECT ANSWER✅✅Entropy
Phosphoric acid has a pKa of 2.1. At what pH will 75% of phosphoric acid be in the conjugate base form?
math hints: log 3 = 0.5 and log 0.33 = -0.5 - CORRECT ANSWER✅✅2.6
All of the amino acids are chiral except: - CORRECT ANSWER✅✅Glycine
Which amino acids are negatively charged at a neutral pH? - CORRECT ANSWER✅✅Glutamate,
aspartate
