NTP Human Nutrition Fundamentals 2

Question 1

Which fatty acid is considered the parent omega-6 fatty acid that the body cannot synthesize?

Accepted Answer

Linoleic acid

Answer

Linoleic acid (LA) is the essential parent omega-6 fatty acid that humans must obtain from diet because we lack the delta-12 desaturase enzyme.

Question 2

The glycemic index of a food measures which of the following?

Accepted Answer

Rate at which blood glucose rises compared to pure glucose

Answer

Glycemic index ranks how quickly a food raises blood glucose relative to pure glucose (GI=100) using a 50g carbohydrate portion.

Question 3

Which mineral is a structural component of the antioxidant enzyme glutathione peroxidase?

Accepted Answer

Selenium

Answer

Selenium is the essential cofactor incorporated into glutathione peroxidase as selenocysteine, enabling the enzyme to neutralize hydrogen peroxide.

Question 4

What term describes the process by which bile salts emulsify dietary fats in the small intestine?

Accepted Answer

Micelle formation

Answer

Bile salts surround fat droplets to form micelles, dramatically increasing the surface area available for pancreatic lipase digestion.

Question 5

Which B vitamin serves as the primary methyl donor in one-carbon metabolism via its active form methyltetrahydrofolate?

Accepted Answer

Folate (B9)

Answer

5-methyltetrahydrofolate (5-MTHF), the active form of folate, donates its methyl group to homocysteine to regenerate methionine in the methylation cycle.

(NTP) Nutritional Therapy Practitioner Practice Test

(NTP) Nutritional Therapy Practitioner Practice Test

NTP Human Nutrition Fundamentals 2