In the tetrapeptide Ala-Cys-Val-Leu, the N-terminal amino acid is ...

[Kikoku]

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.

[choc0chan]

Answer to Question 1

A

Answer to Question 2

D

Answer to Question 3

A

Answer to Question 4

E

[Kikoku]

Wow, this really help

[yeungji]

Gracias!