What is albumin and what is gelatin? how can one differentiate between the two?

Albumin can be described as a family of proteins consisting of globular proteins where as Gelatin can be describes as a substance which is derived from a protein called collagen.

Explanation:

Albumin are a class of proteins mainly monomeric proteins.

The properties of albumin are:

1.  They are soluble in water.

2. They can be coagulated by heat.

3. They are present in milk, egg white etc.

The functions of albumin include:

1. They are carrier molecules for substances for thyroid hormones, fatty acids as well as steroids.

2. They stabilize the volume of extracellular fluid.

Gelatin is a protein that is made by partially hydrolyzing collagen. Gelatin is used for making edibles like jelly. Gelatin also serves as the translucent membrane which is used for filtration  in photography.

the correct option is option d