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Multiple Choice
Which of the following best describes chylomicrons?
A
Hormones involved in regulating blood glucose levels
B
Lipoprotein particles that transport dietary lipids from the intestines to other locations in the body
C
Enzymes that break down carbohydrates in the small intestine
D
Structural proteins found in the cell membrane
Verified step by step guidance
1
Step 1: Begin by understanding the term 'chylomicrons.' Chylomicrons are a type of lipoprotein particle, which are responsible for transporting lipids (fats) in the body. Lipoproteins are essential for moving hydrophobic molecules like fats through the aqueous environment of the bloodstream.
Step 2: Recall the role of chylomicrons in the digestive system. After dietary lipids are broken down in the small intestine, they are absorbed by intestinal cells (enterocytes). These lipids are then packaged into chylomicrons for transport.
Step 3: Consider the function of chylomicrons. They transport dietary lipids, such as triglycerides, cholesterol, and fat-soluble vitamins, from the intestines to other tissues in the body, including muscle and adipose tissue, where they can be used for energy or stored.
Step 4: Compare the options provided in the question. Eliminate incorrect choices by matching the description of chylomicrons to their biological function. For example, chylomicrons are not hormones, enzymes, or structural proteins; they are lipoprotein particles.
Step 5: Conclude that the correct answer is: 'Lipoprotein particles that transport dietary lipids from the intestines to other locations in the body,' as this best matches the definition and function of chylomicrons.