represents amine functional group and 
represents carboxylic acid functional group. When these both functional groups are substituted onto a single carbon atom, then amino acid is formed.
The organic compound consists of functional group and functional group with a side chain is said to be an amino acid.
A: amine group is .
C: carboxylic acid group is
B: amino acid represents functional group and functional group which are substituted onto a single carbon atom.
D: carbohydrate: the general formula of carbohydrate is 
.
Hence, amino acid is the correct answer.
Answer:
By bonding due to the attractive forces
The correct answer is uneven
Answer: Aluminum is the metal that does not corrode in the air.
Explanation:
Corosion is a natural process in which pure metals converted into oxides and reduce the life of metals.
Aluminum atom is a metal that belongs to react with the oxygen present in the air making aluminum oxides. These oxides attaches to the surface and does not allow another oxygen molecule entering it which prevent the process of corrosion.
Answer:
protons and the nucleus
Explanation:
the atomic number represents the number of protons in the atoms nucleus
