Which of the following is a structural protein?
question 4 options:
hemoglobin and antibodies
collagen and keratin
actin and myosin
receptor proteins

The correct answer is Collagen and Keratin

Explanation:

Structural proteins are responsible for making structural components like bones, nails, cartilage, skin, etc. Some structural proteins are protective in function.

One of the most abundant structural protein present in vertebrates is collagen protein. It is the major structural protein which makes bone, cartilage, tendons, ligaments, muscles, skin.

Keratin is a fibrous protein found in eukaryotes. It usually forms hair, nail, feathers, horns, hooves and outer layer of skin in vertebrates and play important function in protection because it provides protective covering.

So, the correct answer is Collagen and Keratin .

explanation: grsaa

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.