BIOC1430 Midterm || with 100% Verified Solutions.

Which of the following amino acids would most likely be soluble in a non polar solvent such as benzene? A) Valine B) Histidine C) Glutamine D) Glycine E) All of the above correct answers Valine What would the overall charge of the following peptide sequence at pH 1 be (Aps-Gly-Arg-His)? A)-1 B) 0 C) 1 D) 2 E) 3 correct answers 3 What charged group(s) are present in glycine at a pH of 7? A)-NH3+ B)-COO- C) -NH2+ D) A and B E) A, B, and C correct answers A and B Which amino acids contain reactive aliphatic hydroxyl groups? A) Serine and threonine B) Cysteine and threonine C) Cysteine and methionine D) Serine and methionine E) Methionine and threonine correct answers Serine and threonine In what pH range is zwitterionic alanine the predominant structure? A) 2-9 B) 8-10 C) 9-14 D) 2-3 E) 0-2 correct answers 2-9 Which amino acid has a side chain with a hydroxyl group? A) Tryptophan B) Alanine C) Serine D) Histidine E) Glutamine correct answers Serine Where are Trp and The found in globular protein and why? A) Exterior forming polar H-bonds with water B) Exterior due to the hydrophilic effect C) Interior forming ionic bonds with other amino acids