Question

Protein molecules that form huge pores in the membranes of the plastids, mitochondria and some bacteria are called as

• A. Stomata
• B. Porins
• C. Coherin
• D. Subarins

Answer 1

The correct option is B Porins

Proteins molecules that form huge pores in the membranes of the plastids, mitochondria and some bacteria are called porins.

A. Stomata are the openings surrounded by guard cells present in the epidermis of the leaves.

B. Porins are pore-proteins that allow the diffusion of macromolecules across the plasma membrane.

C. Coherin is considered to be a hormone of posterior pituitary.

D. Suberin is a resistant and tough substance that is deposited in plants to provide protection.

Hence, the correct answer is 'Porins'.