Introduction to Lipids and Their Role in Nutrition

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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?

Regulating membrane structure and permeability Signup and view all the answers

Which hormone is NOT synthesized using cholesterol as a precursor?

Insulin Signup and view all the answers

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

Fat malabsorption Signup and view all the answers

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

Cholesterol Signup and view all the answers

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

Essential fatty acids Signup and view all the answers

What is a function of the cardiovascular system?

To carry oxygen and nutrient-rich blood to tissues Signup and view all the answers

What factor influences the contribution of lipids to our health?

The type, amount, source, and individual health Signup and view all the answers

What is the main dietary source of lipids?

Triglycerides Signup and view all the answers

Which lipoprotein mainly delivers cholesterol to body cells?

Low-density lipoproteins Signup and view all the answers

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

Cell membrane structure Signup and view all the answers

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

Low-density lipoproteins Signup and view all the answers

Where do lipids require transporters in order to be carried?

Small intestine, lymph, and blood Signup and view all the answers

What is the role of LDL in the body?

To deliver cholesterol to areas of the body where it is needed Signup and view all the answers

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

Higher HDL levels are associated with lower CVD risk Signup and view all the answers

What is the energy yield of lipids per gram?

9 kcal/g Signup and view all the answers

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

Beta-oxidation Signup and view all the answers

What is the purpose of HDL in the bloodstream?

To remove excess cholesterol from the bloodstream Signup and view all the answers