Question

Choose the correct matching pair.

• A. Antibody - Enzyme
• B. GLUT-4 - Enables glucose transport into cells
• C. Keratin - Conjugated helical protein
• D. Elastin - Globular protein

Answer 1

The correct option is B GLUT-4 - Enables glucose transport into cells

GLUT-4 acts as a passageway for glucose molecules into the cell. GLUT-4 receptors are highly expressed in adipose cells and striated muscle cells.

Antibodies are immunoglobulins that are produced in the body in response to an antigen (foreign substance) or disease-causing microbes and help to prevent infections. They function to inactivate and act against the disease-causing microbes.

Keratins are simple fibrous proteins present in eukaryotes. They can occur as helical $\alpha$-keratin or $\beta$-keratin. In vertebrates, almost the entire dry weight of hair, wool, feathers, nails, horns, hooves and the majority of the outer skin layer occur as $\beta$-keratin.

Elastin is a fibrous protein present mainly in the skin, alveoli of lungs, walls of blood vessels, etc. It provides elastic nature to the tissues.