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Digestion and Absorption of Nutrients

Description: This quiz is designed to evaluate your understanding of the process of digestion and absorption of nutrients in the human body.
Number of Questions: 15
Created by:
Tags: digestion absorption nutrients
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Which of the following is the first step in the digestion of carbohydrates?

  1. Salivary amylase breaks down starch into maltose.

  2. Pancreatic amylase breaks down starch into glucose.

  3. Lactase breaks down lactose into glucose and galactose.

  4. Sucrase breaks down sucrose into glucose and fructose.


Correct Option: A
Explanation:

Salivary amylase is an enzyme produced in the salivary glands that begins the digestion of carbohydrates in the mouth.

Where does the majority of protein digestion take place?

  1. Stomach

  2. Small intestine

  3. Large intestine

  4. Liver


Correct Option: B
Explanation:

The majority of protein digestion occurs in the small intestine, where pancreatic enzymes and enzymes produced by the intestinal cells break down proteins into amino acids.

Which of the following enzymes is responsible for the digestion of fats?

  1. Lipase

  2. Amylase

  3. Protease

  4. Lactase


Correct Option: A
Explanation:

Lipase is an enzyme that breaks down fats into fatty acids and glycerol.

What is the primary function of the large intestine in the digestive process?

  1. Absorption of water and electrolytes

  2. Digestion of carbohydrates

  3. Digestion of proteins

  4. Digestion of fats


Correct Option: A
Explanation:

The primary function of the large intestine is to absorb water and electrolytes from the remaining indigestible material, forming stool.

Which of the following nutrients is absorbed primarily in the small intestine?

  1. Carbohydrates

  2. Proteins

  3. Fats

  4. Vitamins and minerals


Correct Option:
Explanation:

All of the macronutrients (carbohydrates, proteins, and fats) and micronutrients (vitamins and minerals) are absorbed primarily in the small intestine.

What is the role of bile in the digestion and absorption of fats?

  1. It breaks down fats into fatty acids and glycerol.

  2. It emulsifies fats, making them easier to digest.

  3. It absorbs fats from the small intestine.

  4. It stores fats until they are needed by the body.


Correct Option: B
Explanation:

Bile, produced by the liver and stored in the gallbladder, emulsifies fats, breaking them down into smaller droplets, which increases the surface area for lipase to work on.

Which of the following is NOT a type of carbohydrate that can be digested by humans?

  1. Starch

  2. Glucose

  3. Fructose

  4. Cellulose


Correct Option: D
Explanation:

Cellulose is a type of carbohydrate that cannot be digested by humans because we lack the necessary enzymes to break it down.

What is the primary function of the stomach in the digestive process?

  1. To break down food mechanically and chemically

  2. To absorb nutrients from food

  3. To store food until it is ready to be digested

  4. To produce bile for the digestion of fats


Correct Option: A
Explanation:

The stomach's primary function is to break down food mechanically through churning and mixing, and chemically through the action of hydrochloric acid and pepsin, which begin the digestion of proteins.

Which of the following is NOT a type of protein found in the human body?

  1. Enzymes

  2. Antibodies

  3. Hormones

  4. Carbohydrates


Correct Option: D
Explanation:

Carbohydrates are not a type of protein. Proteins are made up of amino acids, while carbohydrates are made up of sugars.

What is the role of the pancreas in the digestion and absorption of nutrients?

  1. It produces enzymes that help digest carbohydrates, proteins, and fats.

  2. It produces bile that helps digest fats.

  3. It absorbs nutrients from food.

  4. It stores food until it is ready to be digested.


Correct Option: A
Explanation:

The pancreas produces enzymes such as amylase, lipase, and protease, which help digest carbohydrates, fats, and proteins, respectively.

Which of the following is NOT a type of fat that can be found in the human body?

  1. Saturated fat

  2. Unsaturated fat

  3. Trans fat

  4. Carbohydrates


Correct Option: D
Explanation:

Carbohydrates are not a type of fat. Fats are made up of fatty acids, while carbohydrates are made up of sugars.

What is the primary function of the liver in the digestion and absorption of nutrients?

  1. It produces bile that helps digest fats.

  2. It absorbs nutrients from food.

  3. It stores food until it is ready to be digested.

  4. It produces enzymes that help digest carbohydrates, proteins, and fats.


Correct Option: A
Explanation:

The liver produces bile, which helps digest fats by breaking them down into smaller droplets.

Which of the following is NOT a type of vitamin that is essential for human health?

  1. Vitamin A

  2. Vitamin C

  3. Vitamin D

  4. Vitamin E

  5. Carbohydrates


Correct Option: E
Explanation:

Carbohydrates are not a type of vitamin. Vitamins are organic compounds that are essential for human health in small amounts.

What is the primary function of the gallbladder in the digestion and absorption of nutrients?

  1. It produces bile that helps digest fats.

  2. It absorbs nutrients from food.

  3. It stores bile until it is needed for digestion.

  4. It produces enzymes that help digest carbohydrates, proteins, and fats.


Correct Option: C
Explanation:

The gallbladder stores bile produced by the liver until it is needed for digestion, at which point it is released into the small intestine.

Which of the following is NOT a type of mineral that is essential for human health?

  1. Calcium

  2. Iron

  3. Potassium

  4. Sodium

  5. Carbohydrates


Correct Option: E
Explanation:

Carbohydrates are not a type of mineral. Minerals are inorganic elements that are essential for human health in small amounts.

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