BIOC 3021 Midterm Exam Questions And Verified
Answers (100% correct verified solutions) Graded
A+
Alanine, Ala, A - non-polar, aliphatic
Valine, Val, V - non-polar, aliphatic
Leucine - Leu, L
Isoleucine, Ile, I - non-polar, aliphatic
,Glycine, Gly, G - non-polar, aliphatic
Proline, Pro, P - nonpolar, aliphatic, Imino acid
Cysteine, Cys, C - sulfur containing pk=8.3
Methionine, Met, M - sulfur containing
Histidine, His, H - positively charged, Basic, pk=6.0
Phenylalanine, Phe, F - aromatic, non-polar
Tyrosine, Tyr, Y - aromatic, polar, pk=10.1
Tryptophan, Try, W - aromatic, polar
Asparagine, Asn, N - polar, uncharged
Glutamine, Gln, Q - polar, uncharged
Serine, Ser, S - polar, uncharged
Threonine, Thr, T - polar, uncharged
, Lysine, Lys, K - positively charged, basic, pk=10.5
Arginine, Arg, R - positively charged, basic, pk=12.5
Aspartic acid, Asp, D - negatively charged, acidic, pk=3.9
Glutamic acid, Glu, E - negatively charged, acidic, pk=4.3
major elements in organisms (bonding and abundance) - H, O, C, N
99%
Covalent
minor elements in living organisms (bonding and abundance) - P, Na, K, Ca, Mg, S,
Cl
0.7%
Ionic
trace elements (abundance) - Zn, Cu, Fe
0.3%
# essential minerals (bonding) - 17 ionic
types of chemical bonds - 1. covelent bonds: shared e-
2. ionic bonds: e- donated (cations and anions)
3. Hydrogen bonds: partial charge attraction
Answers (100% correct verified solutions) Graded
A+
Alanine, Ala, A - non-polar, aliphatic
Valine, Val, V - non-polar, aliphatic
Leucine - Leu, L
Isoleucine, Ile, I - non-polar, aliphatic
,Glycine, Gly, G - non-polar, aliphatic
Proline, Pro, P - nonpolar, aliphatic, Imino acid
Cysteine, Cys, C - sulfur containing pk=8.3
Methionine, Met, M - sulfur containing
Histidine, His, H - positively charged, Basic, pk=6.0
Phenylalanine, Phe, F - aromatic, non-polar
Tyrosine, Tyr, Y - aromatic, polar, pk=10.1
Tryptophan, Try, W - aromatic, polar
Asparagine, Asn, N - polar, uncharged
Glutamine, Gln, Q - polar, uncharged
Serine, Ser, S - polar, uncharged
Threonine, Thr, T - polar, uncharged
, Lysine, Lys, K - positively charged, basic, pk=10.5
Arginine, Arg, R - positively charged, basic, pk=12.5
Aspartic acid, Asp, D - negatively charged, acidic, pk=3.9
Glutamic acid, Glu, E - negatively charged, acidic, pk=4.3
major elements in organisms (bonding and abundance) - H, O, C, N
99%
Covalent
minor elements in living organisms (bonding and abundance) - P, Na, K, Ca, Mg, S,
Cl
0.7%
Ionic
trace elements (abundance) - Zn, Cu, Fe
0.3%
# essential minerals (bonding) - 17 ionic
types of chemical bonds - 1. covelent bonds: shared e-
2. ionic bonds: e- donated (cations and anions)
3. Hydrogen bonds: partial charge attraction
