Question

: Which of the following statements are true about (X) and (Y)?
X) Globular Protein
Y) Fibrous Protein
a. These are linear condensation polymers.
b. Insoluble in water.
c. These proteins have three dimensional folded structure.
d. These are cross linked proteins.
e. Soluble in water
f. These are held together by intermolecular hydrogen bonds.
A. X = a,b,c:Y=d,e,f
B. X = c,d,e:Y=a,b,f
C.X = b, c,a:Y = c.b.f
D.X =a,e,f:Y=b,c,f

Answer 1

Hint: Our hair strand is made up of protein which on coming in contact with water does not dissolve in it whereas we can see that the human blood dissolves in water which also consists of the protein molecule.

Complete step by step answer:
Protein is the polymers with three-dimensional arrangement of atoms in the chain of the amino acid molecule.
Fibrous protein is composed of long and narrow strands where the amino acid molecule is arranged in a repetitive manner. They are linear condensation polymers. The fibrous protein is less sensitive towards change in pH and temperature and shows solubility in water. Fibrous protein is held together by an intermolecular hydrogen bond.
Example: fibrin, keratin.
Globular protein is round and spherical in shape in which the amino acid molecules are irregularly arranged. These have three dimensional folded structure. These are cross linked proteins. They are more sensitive than fibrous protein with a change in pH and temperature. Globular proteins show solubility in water.
Example: Haemoglobin, insulin.

Therefore, the correct option is B

Note:
Fibrous protein and globular protein are characterized by the tertiary structure of the protein. Globular protein helps in the biological function of the body whereas fibrous protein helps to maintain the shape of cells by giving a framework.