Question

A molecule that needs a transport protein to travel through water liquids?

Hydrophobic

Anabolic

Catabolic

Answer 1

The answer is hydrophobic molecules.

As, the anabolic and catabolic molecules are the one which can due to metabolic activities either can break down complex molecules to small molecules (catabolism) or constitute complex molecules using small molecules (anabolism). They can pass through the water liquids easily. These molecular changes takes place with the use and release of energy.

But, in case of hydrophobic molecules as they repel water; they cannot pass directly through water. They can directly pass through the cell membrane as they are hydrophobic and cell membrane is composed of lipids (majority). But in water liquids, they will need another medium to pass through it. So, the transport protein can be used in which using facilitated diffusion the receptors at protein will bind to the molecules and will transport molecules across the water liquids.

Hence, Hydrophobic is the correct answer.