WorksheetsL3 Protein and Activity Quiz
Total questions: 8
Worksheet time: 4mins
Evelyn comes across alanine, and wonders, which of the following is the L-isomer of alanine?
NH₂ on the right
NH₂ on the left
Both are L-isomers
Neither is correct
Isla learned that a specific type of reaction is responsible for forming peptide bonds between amino acids. What type of reaction is she studying?
Hydrolysis
Condensation
Oxidation
Reduction
What functional group is involved in forming a peptide bond?
Hydroxyl and amine
Amine and carboxyl
Carbonyl and hydroxyl
Methyl and carbonyl
Name the dipeptide.
Gly-Val
Phe-Gly
Phe-Phe
Val-Phe
How many peptide bonds are present in the tetrapeptide Gly-His-Ser-Ala?
4
1
3
2
Which statement about peptide bond resonance is true?
Peptide bonds rotate freely
Peptide bonds have partial double bond character
Only primary amines can form peptide bonds
The peptide bond is always positively charged
What is the main consequence of the partial double-bond character of a peptide bond?
It increases the bond's flexibility
It makes the bond more reactive to hydrolysis
It restricts free rotation around the bond
It allows the bond to rotate freely
Which atoms are primarily involved in the resonance of a peptide bond?
Alpha carbon, amine nitrogen, and R-group
Carbonyl carbon, oxygen, and amide nitrogen
Sulfur, amine nitrogen, and hydrogen
Hydrogen, carboxyl oxygen, and peptide nitrogen
