Q: If a food contains 10 grams of fat, 20 grams of carbohydrate, and 5 grams of protein, what is the total caloric content of the food? (Use $$9 \text{ kcal/g}$$ for fat, $$4 \text{ kcal/g}$$ for carbohydrate and protein)

$$(10 \times 9) + (20 \times 4) + (5 \times 4) = 90 + 80 + 20 = 190 \text{ kcal}$$

Q: A person consumes a meal containing 30 grams of protein, 50 grams of carbohydrate, and 20 grams of fat. Calculate the percentage of total calories from fat. (Use $$4 \text{ kcal/g}$$ for protein and carbohydrate, $$9 \text{ kcal/g}$$ for fat)

$$\frac{20 \times 9}{(30 \times 4) + (50 \times 4) + (20 \times 9)} \times 100 = \frac{180}{120 + 200 + 180} \times 100 = \frac{180}{500} \times 100 = 36\%$$

Question 1

Which of the following best describes a macronutrient?

Accepted Answer

A nutrient that provides energy and is required in large amounts

Question 2

If a food contains 10 grams of fat, 20 grams of carbohydrate, and 5 grams of protein, what is the total caloric content of the food? (Use $$9 	ext{ kcal/g}$$ for fat, $$4 	ext{ kcal/g}$$ for carbohydrate and protein)

Accepted Answer

$$(10 	imes 9) + (20 	imes 4) + (5 	imes 4) = 90 + 80 + 20 = 190 	ext{ kcal}$$

Question 3

Which of the following nutrients does NOT provide energy?

Accepted Answer

Vitamins

Question 4

A patient is diagnosed with iron-deficiency anemia. Which nutrient is most likely lacking in their diet?

Accepted Answer

Iron

Question 5

Which of the following is a function of the hormone cholecystokinin (CCK)?

Accepted Answer

Stimulates the release of bile from the gallbladder

Question 6

According to the Dietary Guidelines for Americans 2020-2025, which of the following is a key recommendation?

Accepted Answer

Limit added sugars to less than 10% of daily calories

Question 7

Which of the following best describes the function of the portal vein in nutrient absorption?

Accepted Answer

Transports absorbed nutrients from the small intestine to the liver

Question 8

A food label states that a product is 'high in fiber.' According to FDA regulations, this is an example of which type of claim?

Accepted Answer

Nutrient content claim

Question 9

Which of the following best explains why water is considered an essential nutrient?

Accepted Answer

It is required for all chemical reactions in the body and cannot be synthesized in sufficient amounts

Question 10

A patient presents with symptoms of dehydration. Which hormone is most likely to be elevated in response?

Accepted Answer

Antidiuretic hormone (ADH)

Question 11

Which of the following is the correct order of the digestive tract from mouth to anus?

Accepted Answer

Mouth, esophagus, stomach, small intestine, large intestine, rectum, anus

Question 12

Which of the following best describes the function of sodium bicarbonate in digestion?

Accepted Answer

Neutralizes stomach acid in the small intestine

Question 13

A person consumes a meal containing 30 grams of protein, 50 grams of carbohydrate, and 20 grams of fat. Calculate the percentage of total calories from fat. (Use $$4 	ext{ kcal/g}$$ for protein and carbohydrate, $$9 	ext{ kcal/g}$$ for fat)

Accepted Answer

$$\frac{20 	imes 9}{(30 	imes 4) + (50 	imes 4) + (20 	imes 9)} 	imes 100 = \frac{180}{120 + 200 + 180} 	imes 100 = \frac{180}{500} 	imes 100 = 36\%$$

Question 14

Which of the following is a primary function of potassium in the body?

Accepted Answer

Maintenance of fluid and electrolyte balance

Question 15

Which of the following statements about the lymphatic system is correct?

Accepted Answer

It absorbs and transports fat-soluble nutrients

Question 16

A patient is experiencing muscle cramps and irregular heartbeat. Which electrolyte imbalance is most likely responsible?

Accepted Answer

Hypokalemia (low potassium)

Question 17

Which of the following best describes the role of enzymes in digestion?

Accepted Answer

They catalyze the breakdown of macronutrients into absorbable units

Question 18

Which of the following beverages would contribute the most to dehydration?

Accepted Answer

Coffee (caffeinated)

Question 19

Which of the following is a major source of dietary fiber?

Accepted Answer

Whole grains

Question 20

A person loses 2 kg of body weight after a marathon. Assuming all weight loss is due to water, how many liters of water did they lose? (1 kg water = 1 L)

Accepted Answer

$$2 	ext{ L}$$

Comprehensive Study Notes: Introduction to Nutrition, Healthy Eating Tools, Digestion, and Water Balance

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