Each amino acid also has an alkyl group R called the………
a) side chain
b) open chain
c) closed chain
d) all of these
………different amino acids are commonly found in proteins.
a) 16
b) 17
c) 19
d) 20
Our body can prepare………amino acids.
a) 10
b) 20
c) 15
d) 25
The protein
polymer is built by condensation reactions b/w amino acid, along with removal
of………molecules.
a) CO2
b) SO2
c) H2O
d) NO2
In proteins………types of bonding may occur.
a) 2
b) 3
c) 4
d) 5
In proteins three types of bonding may occurs are………
a) peptide bonding
b) hydrogen bonding
c) disulphide bonding
d) all of these
Explanation:-
(1) peptide linkage:-
The bonding b/w carbonyl group (—c—) and NH group are called peptide linkage.
(2) Hydrogen bonding: -
An electrostatic attraction b/w a hydrogen atom in one polar molecule ( as of water) and a small electronegative atom (as of O, N, Fl) is usually another molecule of the same or a different polar substance.
(3) Disulphide bridges:-
Disulphide bridges are a common mechanism used in nature to stabilize many proteins. Such disulphide bridges are often found among extracellular proteins that are secreted from cells.
