Human Digestive System

Question 1:

Which of the following is responsible for breaking down carbohydrates in the mouth?

 a) Proteases

b) Lipases

c) Salivary amylase

d) Gastric acid

Answer:

c) Salivary amylase.

Explanation:

Salivary amylase is an enzyme in saliva that begins the breakdown of carbohydrates in the mouth.

Question 2:

Which of the following is a muscular tube that connects the mouth to the stomach?

a) Liver

b) Esophagus

c) Pancreas

d) Gallbladder

Answer:

b) Esophagus

Explanation:

The esophagus is a muscular tube that connects the mouth to the stomach and transports food from the mouth to the stomach.

Question 3:

Which of the following is responsible for further breaking down partially digested food and mixing it with gastric juices to create chyme?

a) Small intestine

b) Large intestine

c) Stomach

d) Pancreas

Answer:

c) Stomach

Explanation:

The stomach is responsible for further breaking down food that has been partially digested in the mouth and mixing it with gastric juices to create a thick liquid called chyme.

Question 4:

Which of the following is responsible for absorbing nutrients from chyme, including carbohydrates, proteins, and fats?

a) Small intestine

b) Large intestine

c) Stomach

d) Esophagus

Answer:

c) Small intestine

Explanation:

The small intestine is responsible for absorbing nutrients from the chyme, including carbohydrates, proteins, and fats.

Question 5:

Which of the following is responsible for absorbing water and electrolytes from the remaining waste products of digestion and forming solid feces?

a) Small intestine

b) Large intestine

c) Stomach

d) Esophagus

Answer:

b) Large intestine

Explanation:

The large intestine is responsible for absorbing water and electrolytes from the remaining waste products of digestion and forming solid feces.

Question 6:

Which of the following produces bile, which helps to break down fats and aid in their absorption in the small intestine?

a) Pancreas

b) Liver

c) Gallbladder

d) Esophagus

Answer:

b) Liver

Explanation:

The liver produces bile, which helps to break down fats and aid in their absorption in the small intestine.

Question 7:

Which of the following stores and releases bile into the small intestine when fat is present in the digestive tract?

a) Pancreas

b) Liver

c) Gallbladder

d) Esophagus

Answer:

c) Gallbladder

Explanation:

The gallbladder stores and releases bile into the small intestine when fat is present in the digestive tract.

Question 8:

Which of the following produces enzymes that help to digest carbohydrates, proteins, and fats in the small intestine?

a) Liver

b) Gallbladder

c) Pancreas

d) Stomach

Answer:

c) Pancreas

Explanation:

The pancreas produces enzymes that help to digest carbohydrates, proteins, and fats in the small intestine.

Question 9:

Which of the following is responsible for moving food along the digestive tract?

a) Hydrochloric acid

b) Mucus

c) Peristalsis

d) Pyloric sphincter

Answer:

c) Peristalsis

Explanation:

Peristalsis is the muscular contraction of the digestive tract that moves food along the digestive tract.

Question 10:

Which of the following is a small pouch attached to the large intestine?

a) Appendix

b) Gallbladder

c) Pancreas

d) Esophagus

Answer:

a) Appendix

Explanation:

The appendix is a small pouch attached to the large intestine, and its function is not well understood.

Question 11:

Which of the following protects the lining of the digestive tract and lubricates food as it moves through the digestive tract?

a) Mucus

b) Hydrochloric acid

c) Peristalsis

d) Pyloric sphincter

Answer:

a) Mucus

Explanation:

Mucus in the digestive system

Question 12:

Which of the following is responsible for breaking down carbohydrates in the mouth?

 a) Proteases

b) Lipases

c) Salivary amylase

d) Gastric acid

Answer:

c) Salivary amylase.

Explanation:

Salivary amylase is an enzyme in saliva that begins the breakdown of carbohydrates in the mouth.

Question 13:

Which of the following is responsible for breaking down carbohydrates in the mouth?

 a) Proteases

b) Lipases

c) Salivary amylase

d) Gastric acid

Answer:

c) Salivary amylase.

Explanation:

Salivary amylase is an enzyme in saliva that begins the breakdown of carbohydrates in the mouth.

Question 14:

Which of the following is responsible for breaking down carbohydrates in the mouth?

 a) Proteases

b) Lipases

c) Salivary amylase

d) Gastric acid

Answer:

c) Salivary amylase.

Explanation:

Salivary amylase is an enzyme in saliva that begins the breakdown of carbohydrates in the mouth.

Question 15:

Which of the following is responsible for breaking down carbohydrates in the mouth?

 a) Proteases

b) Lipases

c) Salivary amylase

d) Gastric acid

Answer:

c) Salivary amylase.

Explanation:

Salivary amylase is an enzyme in saliva that begins the breakdown of carbohydrates in the mouth.

Question 16:

Which of the following is responsible for breaking down carbohydrates in the mouth?

 a) Proteases

b) Lipases

c) Salivary amylase

d) Gastric acid

Answer:

c) Salivary amylase.

Explanation:

Salivary amylase is an enzyme in saliva that begins the breakdown of carbohydrates in the mouth.

Question 17:

Which of the following is responsible for breaking down carbohydrates in the mouth?

 a) Proteases

b) Lipases

c) Salivary amylase

d) Gastric acid

Answer:

c) Salivary amylase.

Explanation:

Salivary amylase is an enzyme in saliva that begins the breakdown of carbohydrates in the mouth.