Question

Phospholipids are important components of _______. a. the plasma membrane of cells b. the ring structure of steroids c. the waxy covering on leaves d. the double bond in hy drocarbon chains

Short answer

a. the plasma membrane of cells b. the ring structure of steroids c. the waxy covering on leaves d. the double bond in hydrocarbon chains Answer: a. the plasma membrane of cells

Step-by-step solution

Recall the properties of phospholipids

To better understand the context of the question, it is important to remember that phospholipids are a type of lipid molecule with a hydrophilic (water-loving) phosphate head and two hydrophobic (water-repelling) fatty acid tails, which have various important functions in cells and biological systems.

Understand and evaluate each option

In this step, carefully evaluate each choice given to understand whether it correctly describes the main function of phospholipids. a. the plasma membrane of cells: Phospholipids are a major component of the plasma membrane, creating a lipid bilayer that separates the inside of the cell from its external environment. b. the ring structure of steroids: Steroids have a different chemical structure than phospholipids. They have a four-ring structure and are not directly related to the function of phospholipids. c. the waxy covering on leaves: The waxy covering on leaves, called the cuticle, is primarily composed of another type of lipids called cutin and wax, not phospholipids. d. the double bond in hydrocarbon chains: The double bond in hydrocarbon chains refers to a type of chemical bond in organic compounds, which is not directly related to the main function of phospholipids.

Select the correct answer

Based on the evaluation of the options, the option (a) "the plasma membrane of cells" correctly describes the main function of phospholipids. They play a vital role in forming the lipid bilayer, which acts as the cell's barrier. The correct answer is: Phospholipids are important components of the plasma membrane of cells.