Question

multiple select question
select all that apply
choose all the roles that the protein and phospholipid coating of a lipoprotein serve.

• helps agglutinate cholesterol droplets so that they can be removed by wbcs
• enables lipid droplets to remain suspended in the blood
• forms a recognition marker for cells
• protects the cholesterol from being absorbed by cells

Explanation:

1. Option 1: Agglutination for WBC removal isn't a role of lipoprotein coating. Lipoproteins transport lipids, not agglutinate for WBC uptake.
2. Option 2: The protein and phospholipid coating (amphipathic) helps lipids stay suspended (colloidal dispersion) in blood, preventing clumping. This is correct.
3. Option 3: The protein part (apolipoproteins) acts as recognition markers for cell receptors (e.g., LDL receptor for LDL). This is correct.
4. Option 4: The coating doesn't "protect" cholesterol from absorption; rather, it facilitates targeted delivery (e.g., LDL delivers cholesterol to cells). This is incorrect.

Answer:

B. Enables lipid droplets to remain suspended in the blood, C. Forms a recognition marker for cells