Q: A person consumes a meal high in carbohydrates. Which hormone is released to lower blood glucose, and what is the formula for calculating glycemic load ($$GL) $$given by glycemic index ($$GI) $$and carbohydrate content ($$C in $$grams)?

Insulin; $$GL = \frac{GI \times C}{100}$$

Question 1

Which of the following best describes the role of Vitamin D in the body, and what is a classic symptom of its deficiency?

Accepted Answer

Vitamin D is necessary for calcium absorption and bone health; deficiency can cause rickets in children.

Question 2

A patient presents with fatigue, nerve damage, and confusion. Their diet is low in whole grains and pork. Which vitamin deficiency is most likely, and what is the classic disease associated with it?

Accepted Answer

Vitamin B1 (Thiamine); Beriberi

Question 3

Which of the following statements about Dietary Reference Intakes (DRIs) is CORRECT?

Accepted Answer

The Adequate Intake (AI) is used when the RDA is unknown.

Question 4

During digestion, which enzyme is responsible for starting carbohydrate breakdown in the mouth, and what is the main site of nutrient absorption?

Accepted Answer

Salivary amylase; small intestine

Question 5

A person consumes a meal high in carbohydrates. Which hormone is released to lower blood glucose, and what is the formula for calculating glycemic load ($$GL) $$given by glycemic index ($$GI) $$and carbohydrate content ($$C in $$grams)?

Accepted Answer

Insulin; $$GL = \frac{GI 	imes C}{100}$$

Question 6

Which of the following best explains why excessive intake of added sugars is linked to increased risk of metabolic disease?

Accepted Answer

Added sugars contribute to excess calorie intake, leading to obesity and insulin resistance.

Question 7

Which type of dietary fat is most strongly associated with increased LDL cholesterol and cardiovascular disease risk?

Accepted Answer

Saturated fat

Question 8

A vegan athlete wants to ensure adequate intake of all essential amino acids. Which food combination would provide a complete protein profile?

Accepted Answer

Rice and beans

Question 9

Which equation correctly represents the calculation of Body Mass Index (BMI) given weight ($$W in kg) $$and height ($$H in $$meters)?

Accepted Answer

$$BMI = \frac{W}{H^2$}$$

Question 10

A patient has muscle cramps and an irregular heartbeat. Their diet is low in nuts, seeds, and leafy greens. Which mineral deficiency is most likely?

Accepted Answer

Magnesium

Question 11

Which of the following best describes the mechanism by which the DASH diet helps lower blood pressure?

Accepted Answer

It emphasizes high potassium and low sodium foods, which help balance electrolytes and reduce blood pressure.

Question 12

Which nutrient is most critical for preventing neural tube defects during pregnancy, and what is a common food source?

Accepted Answer

Folate; leafy greens

Question 13

Which of the following statements about antioxidants is TRUE?

Accepted Answer

Antioxidants neutralize free radicals, reducing cell damage and disease risk.

Question 14

A patient with anemia is advised to increase their intake of iron. Which of the following statements about iron absorption is correct?

Accepted Answer

Heme iron from animal sources is better absorbed than non-heme iron from plants.

Question 15

Which of the following best explains why water is essential for temperature regulation in the human body?

Accepted Answer

Water has a high heat capacity, allowing it to absorb and distribute heat efficiently.

Question 16

Which vitamin deficiency is most likely to cause night blindness and increased susceptibility to infections?

Accepted Answer

Vitamin A

Question 17

Which of the following is a function of soluble fiber in the diet?

Accepted Answer

It lowers cholesterol and slows glucose absorption.

Question 18

A person is experiencing excessive bleeding and bruising. Which vitamin deficiency is most likely responsible, and what is a common food source?

Accepted Answer

Vitamin K; leafy greens

Question 19

Which of the following best describes the role of B vitamins in energy metabolism?

Accepted Answer

B vitamins act as coenzymes to help extract energy from macronutrients.

Question 20

A 25-year-old woman is concerned about osteoporosis risk later in life. Which combination of nutrients is most important for achieving peak bone mass, and at what life stage is peak bone mass typically reached?

Accepted Answer

Calcium, Vitamin D, and Vitamin K; early adulthood

Comprehensive Study Notes: Vitamins, Minerals, and Core Principles of Nutrition

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