In the tetrapeptide Ala-Cys-Val-Leu, the N-terminal amino acid is ________.
A) Ala
B) Cys
C) Val
D) Leu
E) none of the above
Question 2
In the following reaction, energy is given off. Where does the energy go?
C(s) +O2 (g) = CO2(g)
A) to the reactants
B) to the products
C) to the system
D) to the surroundings
Question 3
Which statement is correct for pure water?
A) Pure water contains equal amounts of hydroxide, OH-, and hydronium, H3O+, ions.
B) Pure water contains larger amounts of hydroxide, OH-, ions than hydronium, H3O+, ions.
C) Pure water contains larger amounts of hydronium, H3O+, ions than hydroxide,
OH-, ions.
D) Pure water is an electrolyte.
E) Pure water contains no ions.
Question 4
The C-terminal amino acid in the peptide Ala-Leu-Gly-His-Pro is
A) Alanine.
B) Leucine.
C) Glycine.
D) Histidine.
E) Proline.
Diagram of the Twenty Essential Amino Acids
Stereoisomerism in α-amino acids
Stereochemistry of the a-Amino Acids
Structure of a Fatty Acid Fatty acids are the building blocks of some lipids
Acid–Base Balance
From DNA to RNA to Amino Acids