Nutrition and Digestion Quizzes: Test Your Knowledge

Question 1

What is the main function of the digestive system?

Accepted Answer

To break down food into nutrients that can be absorbed

Answer

To store food until it can be absorbed

Answer

To remove waste products from the body

Answer

To regulate body temperature

Question 2

Where does most of the nutrient absorption happen in the body?

Accepted Answer

Small intestine

Answer

Stomach

Answer

Large intestine

Answer

Oesophagus

Question 3

What is the purpose of **villi** in the small intestine?

Accepted Answer

To increase surface area for better absorption

Answer

To secrete digestive enzymes

Answer

To store bile

Answer

To transport nutrients to the bloodstream

Question 4

Which of the following is **not** absorbed into the bloodstream?

Accepted Answer

Fibre

Answer

Glucose

Answer

Amino acids

Answer

Fatty acids

Question 5

Which of the following is a healthy way to manage weight?

Accepted Answer

Exercising regularly

Answer

Crash dieting

Answer

Skipping meals

Answer

Taking weight loss supplements

Question 6

Which enzyme in the human digestive system breaks down starch into smaller sugar units?

Accepted Answer

Amylase

Answer

Pepsin

Answer

Lipase

Answer

Protease

Question 7

What is the first step in the digestive process?

Accepted Answer

Chewing and breaking down food in the mouth

Answer

Stomach acid breaking down food

Answer

Absorption of nutrients in the small intestine

Answer

Transportation of nutrients to cells

Question 8

Which part of the digestive system is primarily responsible for nutrient absorption?

Accepted Answer

Small intestine

Answer

Stomach

Answer

Large intestine

Answer

Esophagus

Question 9

What is the main role of enzymes in digestion?

Accepted Answer

To break down complex molecules into simpler substances

Answer

To neutralize stomach acid

Answer

To transport nutrients across cell membranes

Answer

To store bile

Question 10

Which of the following is a potential symptom of malnutrition?

Accepted Answer

Fatigue and weakness

Answer

Healthy skin and hair

Answer

Normal growth and development

Answer

Strong immune system

Question 11

What is the primary function of the villi in the small intestine?

Accepted Answer

To increase the surface area for nutrient absorption

Answer

To store bile

Answer

To produce digestive enzymes

Answer

To propel food through the digestive tract

Question 12

Which nutrient serves as the body's main source of energy?

Accepted Answer

Carbohydrates

Answer

Proteins

Answer

Fats

Answer

Vitamins

Question 13

What is the process by which nutrients are transported across cell membranes against a concentration gradient?

Accepted Answer

Active transport

Answer

Diffusion

Answer

Osmosis

Answer

Facilitated diffusion

Question 14

Which enzyme is responsible for breaking down proteins in the stomach?

Accepted Answer

Pepsin

Answer

Amylase

Answer

Lipase

Answer

Sucrase

Question 15

Which of the following is NOT a function of the small intestine?

Accepted Answer

Transport of undigested food

Answer

Digestion of carbohydrates, proteins, and fats

Answer

Absorption of nutrients into the bloodstream

Question 16

What enzyme breaks down proteins into smaller parts called amino acids?

Accepted Answer

Protease

Answer

Amylase

Answer

Lipase

Answer

Sucrase

Question 17

Which enzyme helps your stomach break down the protein in your food?

Accepted Answer

Pepsin

Answer

Lipase

Answer

Amylase

Question 18

Which of the following is NOT a long-term health issue that can result from an unhealthy diet?

Accepted Answer

Improved academic performance

Answer

Obesity

Answer

Heart disease

Answer

Diabetes

Question 19

What are macronutrients?

Accepted Answer

Nutrients that the body needs in large amounts

Answer

Nutrients that the body needs in small amounts

Answer

Nutrients that the body does not need

Answer

Nutrients that the body produces on its own

Question 20

What is the primary function of the small intestine in digestion?

Accepted Answer

To absorb nutrients into the bloodstream

Answer

To store food and begin digestion

Answer

To break down food into smaller molecules

Answer

To produce enzymes that aid in digestion

Question 21

Which digestive enzyme breaks down proteins?

Accepted Answer

Protease

Answer

Amylase

Answer

Lipase

Answer

Lactase

Question 22

What is the term for the process by which nutrients pass from the small intestine into the bloodstream?

Accepted Answer

Absorption

Answer

Ingestion

Answer

Digestion

Answer

Egestion

Question 23

What is the primary role of the liver in digestion?

Accepted Answer

To produce bile, which helps break down fats

Answer

To absorb carbohydrates from the small intestine

Answer

To break down proteins into amino acids

Answer

To store vitamins and minerals

Question 24

What is the main function of the large intestine?

Accepted Answer

To absorb water from undigested food

Answer

To digest food that has not been broken down in the small intestine

Answer

To produce enzymes that aid in digestion

Answer

To store nutrients until they are needed

Question 25

Which process breaks down food into smaller molecules that can be absorbed by the body?

Accepted Answer

Digestion

Answer

Respiration

Answer

Absorption

Answer

Assimilation

Question 26

Which of the following is NOT a nutrient essential for the human body?

Accepted Answer

Carbon dioxide

Answer

Carbohydrate

Answer

Vitamin

Answer

Protein

Question 27

What is the primary function of the digestive system?

Accepted Answer

To absorb nutrients from food

Answer

To transport oxygen around the body

Answer

To remove waste products from the body

Answer

To regulate body temperature

Question 28

Which organ is responsible for absorbing the majority of nutrients from food?

Accepted Answer

Small intestine

Answer

Stomach

Answer

Large intestine

Answer

Liver

Question 29

What is the term for the chemical process that breaks down food into smaller molecules?

Accepted Answer

Digestion

Answer

Absorption

Answer

Assimilation

Answer

Excretion

Question 30

Which of the following enzymes is NOT involved in the digestion of carbohydrates?

Accepted Answer

Protease

Answer

Amylase

Answer

Lipase

Answer

Lactase

Question 31

What is the main function of bile?

Accepted Answer

To emulsify fats

Answer

To neutralize stomach acid

Answer

To absorb nutrients

Answer

To secrete enzymes

Question 32

Which of the following is a good source of calcium?

Accepted Answer

Milk

Answer

Spinach

Answer

Meat

Answer

Bread

Question 33

Which organ is responsible for absorbing nutrients from digested food?

Accepted Answer

Small intestine

Answer

Stomach

Answer

Liver

Answer

Pancreas

Question 34

Which part of the digestive system absorbs the most nutrients?

Accepted Answer

Small intestine

Answer

Stomach

Answer

Large intestine

Answer

Pancreas

Question 35

Which enzyme breaks down carbohydrates into smaller sugars?

Accepted Answer

Amylase

Answer

Protease

Answer

Lipase

Answer

Nuclease

Question 36

Which of the following is not a category of nutrients?

Accepted Answer

Enzymes

Answer

Carbohydrates

Answer

Proteins

Answer

Minerals

Question 37

What is the name of the muscular tube that connects the mouth to the stomach?

Accepted Answer

Esophagus

Answer

Trachea

Answer

Duodenum

Answer

Peristalsis

Question 38

Which organ produces bile that helps break down fats?

Accepted Answer

Liver

Answer

Gallbladder

Answer

Pancreas

Answer

Stomach

Question 39

What is the main function of dietary fiber?

Accepted Answer

Helps with digestion and bowel movements

Answer

Provides energy

Answer

Helps absorb nutrients

Answer

Controls blood sugar levels

Question 40

Which vitamin is important for strong bones and teeth?

Accepted Answer

Vitamin D

Answer

Vitamin A

Answer

Vitamin C

Answer

Vitamin E

Question 41

What is the primary function of peristalsis in the digestive system?

Accepted Answer

To move food through the digestive tract

Answer

To prevent food from moving backward

Answer

To break down food into smaller pieces

Question 42

Which of the following conditions is caused by a deficiency of vitamin C?

Accepted Answer

Scurvy

Answer

Night blindness

Answer

Rickets

Answer

Beriberi

Question 43

Which of the following is not classified as a macronutrient?

Accepted Answer

Oxygen

Answer

Fats

Answer

Proteins

Answer

Carbohydrates

Question 44

Which section of the digestive system begins the process of protein breakdown?

Accepted Answer

Stomach

Answer

Small intestine

Answer

Esophagus

Answer

Large intestine

Question 45

What is the role of enzymes in the human digestive system?

Accepted Answer

To break down large nutrient molecules into smaller ones, facilitating absorption.

Answer

To regulate body temperature.

Answer

To transport nutrients to cells throughout the body.

Answer

To absorb nutrients directly into the bloodstream.

Question 46

Which of the following is a common symptom experienced during indigestion?

Accepted Answer

Heartburn

Answer

Headache

Answer

Sneezing

Answer

Muscle cramps

Question 47

Which of the following food groups is a good source of dietary fiber?

Accepted Answer

Whole grains

Answer

Candy and chocolates

Answer

Processed meats

Answer

Sugary drinks

Question 48

What is the primary function of villi in the small intestine?

Accepted Answer

To increase the surface area for efficient absorption of nutrients.

Answer

To produce digestive enzymes.

Answer

To regulate the pH level of the digestive tract.

Answer

To transport food toward the large intestine.

Question 49

Which factor can significantly contribute to malnutrition?

Accepted Answer

Inadequate and unbalanced diet

Answer

Sufficient sleep

Answer

Good personal hygiene

Answer

Lack of physical activity

Question 50

What is the term for the process by which nutrients are transported throughout the body?

Accepted Answer

Circulation

Answer

Digestion

Answer

Assimilation

Answer

Absorption

Question 51

Which of the following meal options represents a balanced diet?

Accepted Answer

Grilled chicken with brown rice, steamed vegetables, and a side of fruit

Answer

Burger and fries with a sugary drink

Answer

Pasta with cheese and garlic bread