Question

question 15
____ are the primary, water - insoluble components of cell membranes.
nucleic acids
proteins
phospholipids
acids
carbohydrates

Explanation:

Cell membranes are composed mainly of phospholipids which are amphipathic (having both hydrophilic and hydrophobic regions) and water - insoluble due to their hydrophobic tails. Nucleic acids are for genetic information storage, proteins have various functions like transport and catalysis but aren't the main water - insoluble component, acids are not primary membrane components, and carbohydrates are often on the membrane surface for recognition but not the main water - insoluble part.

Answer:

C. Phospholipids