Biology 2

Question 1

What is the primary function of the digestive system?

Answer 1

To break down food into nutrients that can be absorbed into the body.

Question 2

True or False: The digestive system includes both mechanical and chemical processes.

Answer 2

True

Question 3

Fill in the blank: The _______ is the first part of the digestive system where food enters.

Answer 3

mouth

Question 4

What enzyme in saliva begins the digestion of carbohydrates?

Answer 4

Amylase

Question 5

What is the role of the esophagus in the digestive system?

Answer 5

To transport food from the mouth to the stomach.

Question 6

Multiple Choice: Which organ produces bile?

Answer 6

Liver

Question 7

What is the function of the stomach in digestion?

Answer 7

To mix food with gastric juices and break it down into a semi-liquid form.

Question 8

True or False: The small intestine is primarily responsible for nutrient absorption.

Answer 8

True

Question 9

Fill in the blank: The _______ intestine absorbs water and forms waste.

Answer 9

large

Question 10

What are villi and where are they located?

Answer 10

Villi are small, finger-like projections in the small intestine that increase surface area for absorption.

Question 11

Multiple Choice: Which of the following is NOT a part of the digestive system?

Answer 11

Heart

Question 12

What is the function of the pancreas in digestion?

Answer 12

To produce digestive enzymes and bicarbonate to neutralize stomach acid.

Question 13

True or False: The gallbladder stores bile produced by the liver.

Answer 13

True

Question 14

Fill in the blank: The _______ is the final section of the digestive tract.

Answer 14

anus

Question 15

What is peristalsis?

Answer 15

The wave-like muscle contractions that move food through the digestive tract.

Question 16

Multiple Choice: Which part of the digestive system is responsible for the majority of chemical digestion?

Answer 16

Small intestine

Question 17

What is the role of gastric acid in the stomach?

Answer 17

To break down food and kill harmful bacteria.

Question 18

True or False: Fiber is a nutrient that the body can digest and absorb.

Answer 18

False

Question 19

Fill in the blank: Digestion begins in the _______ with mechanical chewing and salivary enzymes.

Answer 19

mouth

Question 20

What is the main purpose of the digestive enzymes produced by the pancreas?

Answer 20

To break down carbohydrates, proteins, and fats into smaller molecules.

Question 21

Multiple Choice: Which vitamin is produced by bacteria in the large intestine?

Answer 21

Vitamin K

Question 22

What is the name of the muscular valve that controls the passage of food from the stomach to the small intestine?

Answer 22

Pyloric sphincter

Question 23

True or False: The liver filters toxins from the blood and produces cholesterol.

Answer 23

True

Question 24

Fill in the blank: The _______ duct carries bile from the liver to the small intestine.

Answer 24

bile

Question 25

What role do probiotics play in the digestive system?

Answer 25

They help maintain a healthy balance of gut bacteria.

Question 26

Multiple Choice: What is the process by which nutrients are taken into the bloodstream from the digestive tract?

Answer 26

Absorption

Question 27

What is the primary function of the rectum?

Answer 27

To store feces before elimination.

Question 28

True or False: The small intestine is about 20 feet long in adults.

Answer 28

True

Question 29

Fill in the blank: The _______ is a flap of tissue that prevents food from entering the windpipe.

Answer 29

epiglottis

Question 30

What is the significance of the enteric nervous system?

Answer 30

It controls the functions of the gastrointestinal system independently of the central nervous system.

Question 31

Multiple Choice: Which of the following organs is not involved in digestion?

Answer 31

Spleen

Question 32

What is the primary function of saliva?

Answer 32

To moisten food and begin the digestion of carbohydrates.