BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Therefore the correct answer is D) controlling movement into the nucleus since the cell membrane is not responsible for this function.

Detailed explanation-2: -A) It provides energy for chemical reaction – Water does not provide energy for chemical reactions so it is not the function of water. It cannot provide energy so it is the correct answer.

Detailed explanation-3: -Water molecules play an important role in providing unique environments for biological reactions on cell membranes. It is widely believed that water molecules form bridges that connect lipid molecules and stabilize cell membranes.

Detailed explanation-4: -The four main functions of the plasma membrane include identification, communication, regulation of solute exchange through the membrane, and isolation of the cytoplasm from the external environment.