Introduction to Lipids and Their Role in Nutrition
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Questions and Answers

What is the main reason for the push to eliminate trans fats from our food system?

  • Trans fats are beneficial for heart health.
  • Trans fats increase the risk of cardiovascular disease. (correct)
  • Trans fats help in the synthesis of cholesterol.
  • Trans fats are the primary source of essential lipids.

Why are sterols considered lipids even though they have a different structure compared to triglycerides?

  • Sterols have a hydrophobic nature. (correct)
  • Sterols are a rich source of energy.
  • Sterols are only found in animal products.
  • Sterols assist in muscle growth.

Which molecule is the most common animal-derived sterol in the body?

  • Vitamin D
  • Cholesterol (correct)
  • Cortisol
  • Phospholipids

What is the primary function of cholesterol in the cell membrane?

<p>Regulating membrane structure and permeability (B)</p> Signup and view all the answers

Which hormone is NOT synthesized using cholesterol as a precursor?

<p>Insulin (A)</p> Signup and view all the answers

What is a risk factor for fat-soluble vitamin deficiencies?

<p>Fat malabsorption (D)</p> Signup and view all the answers

What is a precursor for steroid hormones, bile salts, and vitamin-D?

<p>Cholesterol (C)</p> Signup and view all the answers

What type of fatty acids can be used to synthesize endocannabinoids?

<p>Essential fatty acids (A)</p> Signup and view all the answers

What is a function of the cardiovascular system?

<p>To carry oxygen and nutrient-rich blood to tissues (C)</p> Signup and view all the answers

What factor influences the contribution of lipids to our health?

<p>The type, amount, source, and individual health (D)</p> Signup and view all the answers

What is the main dietary source of lipids?

<p>Triglycerides (A)</p> Signup and view all the answers

Which lipoprotein mainly delivers cholesterol to body cells?

<p>Low-density lipoproteins (B)</p> Signup and view all the answers

What is a function of lipids in the body other than energy provision?

<p>Cell membrane structure (B)</p> Signup and view all the answers

High saturated fat intake is associated with increases in which type of lipoprotein?

<p>Low-density lipoproteins (D)</p> Signup and view all the answers

Where do lipids require transporters in order to be carried?

<p>Small intestine, lymph, and blood (D)</p> Signup and view all the answers

What is the role of LDL in the body?

<p>To deliver cholesterol to areas of the body where it is needed (B)</p> Signup and view all the answers

What is the association between HDL levels and cardiovascular disease risk?

<p>Higher HDL levels are associated with lower CVD risk (D)</p> Signup and view all the answers

What is the energy yield of lipids per gram?

<p>9 kcal/g (A)</p> Signup and view all the answers

What is the process by which fatty acids are broken down into acetyl CoA?

<p>Beta-oxidation (A)</p> Signup and view all the answers

What is the purpose of HDL in the bloodstream?

<p>To remove excess cholesterol from the bloodstream (D)</p> Signup and view all the answers

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