Ch 7 Biology

Question 1

What is the function of villi?

Answer 1

Increase surface area for absorption.

Question 2

What is mechanical digestion?

Answer 2

Mechanically breaking down food.

Question 3

Whatis chemical digestion?

Answer 3

Chemically breaking down food.

Question 4

What types of digestion occur in the mouth?

Answer 4

Both Chemical and Mechanical.

Question 5

In what 3 organs does chemical digestion occur?

Answer 5

Mouth,stomach, small intestine.

Question 6

What 3 substances make up gastric juices in the stomach?

Answer 6

HCL, Mucus, Pepsin.

Question 7

What causes Heartburn?

Answer 7

Acid in esophagus.

Question 8

What type of organic molecule does amylase digest?

Answer 8

Carbohydrate.

Question 9

Where does the chemical digestion of fats begin?

Answer 9

Small Intestine.

Question 10

What is the function of the rectum?

Answer 10

Store feces.

Question 11

What is the function of the large intestine?

Answer 11

Absorb Water and produce vitamin k.

Question 12

After monosaccharides are absorbed into the blood where do the go?

Answer 12

Mitochondria.

Question 13

What organic molecule do the enzymes made in the pancreas digest?

Answer 13

Fat, surgar, protein.

Question 14

What value does cellulose have in our diet.

Answer 14

Fiber, stimulates contractions of Large Intestine.

Question 15

How do koalas digest eucalyptus?

Answer 15

Place in the caecum.

Question 16

What is peristalisis?

Answer 16

Waves to move food down esapagus.

Question 17

How do enzymes aid in the digetive system?

Answer 17

Chemical breakdown.

Question 18

What is the end product of the digestion of starch, protein, and fat?

Answer 18

Glucose, amino acid, fatty acid and glycerol.

Question 19

Name 3 organs that are considered accessory organs in the digestive system?

Answer 19

Salivary gland, liver, gall bladder, pancreas.

Question 20

What is the function of bicarbonate and where is it produced?

Answer 20

Neutralized acid.

Question 21

Where and how is vitamin k produced?

Answer 21

Large intestine by bacteria.

Question 22

Trace the pathway of food through the true organs of the digestive system.

Answer 22

Mouth to esophagus to stomach to small intestine to large intestine to rectum to anus.

Question 23

Name the enzyme investigated in the spit lab.

Answer 23

Amylase.

Question 24

What is a calorie?

Answer 24

A unit of heat energy.

Question 25

What causes diarrhea?

Answer 25

Large intestine not absorbing water.

Question 26

How come the acid solution from the stomach does not burn the duodenum?

Answer 26

Pancrease secretes a basic solution.

Question 27

What is the function of bile?

Answer 27

Break lipids to lipid droplets.

Question 28

Where is this bile made and then stored?

Answer 28

Liver to gall bladder.

Question 29

What is the function of the epiglottis?

Answer 29

To prevent swallowed items in windpipe.

Question 30

Why do we have bacteria living in our intestine?

Answer 30

To absorb water and produce vitamin k.

Question 31

Describe the importance of mechanical digestion.

Answer 31

It increases the surface area of food, allowing chemical digestion to occur more frequently.

Question 32

What might result if food moves very quickly through the large intestine?

Answer 32

The feces would be eliminated as diarrhea.

Question 33

When do diabetics need to take insulin?

Answer 33

When levels of glucose in the blood are at high levels.

Question 34

What is most likely a result of damage to the liver?

Answer 34

Decrease in bile production.

Question 35

Where does most digestion occur?

Answer 35

Small Intestine.

Question 36

What is a statement that about the digestive system?

Answer 36

Wherever mechanical digestion occurs, chemical digestion also occurs.

Question 37

What provides a passage for both food and air?

Answer 37

The pharynx.

Question 38

The wavelike contractions of muscle that move food through the digestive system are called.

Answer 38

Peristalsis.

Question 39

Pepsin and hydrochloric acid in the stomach begin the digestion of:

Answer 39

Protein.

Question 40

What does bile do.

Answer 40

Breaks down globules of fat into tiny droplets.

Question 41

Fat molecules are broken down into fatty acids by.

Answer 41

Enzymes.