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HUMAN DIGESTION /ENZYMES IN THE MOUTH

Total questions: 102

Worksheet time: 57mins

Name
Class
Date
1.

What is the oesophagus

a)

A tube leading down from the back of the mouth that takes air down to the lungs

b)

A tube leading down from the back of the mouth that takes food down to the stomach

c)

Cells that produce mucus

d)

Helps break down fats in the duodenum

2.

layers of the teeth

a)

enamel, dentine, pulp cavity

b)

Enamel, veins, fibers

c)

Pulp arterie, Enamel, sucrose

3.

What does amylase break down?

a)

Carbohydrates like starch into maltose molecules

b)

Breaks down syliva

c)

Breaks down proteins

d)

Breaks down lipids

4.

What stage of digestion is being shown by this picture?

a)

absorption

b)

assimilation

c)

digestion

d)

egestion

e)

ingestion

5.

How many different kinds of teeth are found in the mouth?

a)

2

b)

4

c)

6

d)

8

6.

How many sets of teeth does a human develop in their lifetime?

a)

1

b)

2

c)

3

d)

4

7.

What are the names of the sets of teeth?

a)

baby teeth and permanent teeth

b)

temporary teeth and adult teeth

c)

baby teeth and adult teeth

d)

temporary teeth and permanent teeth

8.

How many teeth in the first set of teeth?

a)

10

b)

20

c)

32

d)

40

9.

How many teeth in the second set of teeth?

a)

10

b)

12

c)

20

d)

32

10.

What types of digestion occur in the mouth?

a)

physical digestion

b)

chemical digestion

c)

physical and chemical digestion

11.

Which food is a food that is high in carbohydrates?

a)

apple

b)

beans

c)

corn on the cob

d)

eggs

12.

What three things make up saliva?

a)

amylase

b)

food

c)

mucus

d)

water

13.

A bolus is..

a)

a ball of enzymes

b)

a ball of muscular contractions

c)

a ball of food

14.

Chemical digestion of ________ begins in mouth

a)

proteins

b)

fats

c)

carbohydrates

d)

all of them

15.

Amylase converts

a)

Starch into maltose

b)

starch into glycogen

c)

starch into glucose

d)

none of them

16.

What are the five processes in human nutrition (in order)?

a)

ingestion,digestion,egestion,absorption,assimilation

b)

ingestion,digestion,absorption,egestion,assimilation

c)

ingestion,digestion,absorption,assimilation,egestion

d)

absorption,ingestion,digestion,egestion,assimilation

17.

Where does ingestion begin?

a)

duodenum

b)

stomach

c)

mouth

d)

colon

18.

Chewing cuts food into smaller pieces which is a form of chemical digestion

a)

True

b)

False

19.

Salivary amylase digests starch into glucose

a)

True

b)

False

20.

Peristalsis mixes food with gastric juice in the stomach

a)

True

b)

False

21.

The diagram shows the human alimentary canal.

Which of the organs are related to digestion of carbohydrates?

a)

R and T only

b)

P and Q only

c)

S and T only

d)

Q, R, S, and T

22.
Tube that carries swallowed food to the stomach
a)
esophagus
b)
liver
c)
pancreas
d)
rectum
23.
The highlighted organ is the
a)
liver
b)
large intestine
c)
small intestine
d)
stomach
24.
Chewing food is an example of _____________.
a)
chemical digestion
b)
mechanical digestion
25.
Bile is made by which digestive organ?
a)
Gallbladder
b)
Stomach
c)
Rectum
d)
Liver
26.
Which is NOT a function of the Digestive System?
a)
To rid the body of solid waste
b)
Absorb nutrients for energy & growth
c)
Break down nutrients from food
d)
Pump blood around the body
27.

What is the correct order of the digestive system?

a)

Mouth, Stomach, Esophagus, Small Intestine, Large Intestine

b)

Mouth, Esophagus, Stomach, Large Intestine, Small Intestine

c)

Mouth, Esophagus, Stomach, Small Intestine, Large Intestine

d)

Mouth, Large Intestine, Small Intestine, Stomach, Esophagus

28.

At what point does digestion begin?

a)

When you put food in your mouth

b)

After the food enters the stomach

c)

After the food enters the large intestine

d)

After you go to the bathroom

29.

What is the purpose of teeth?

a)

To grind them to annoy your parents

b)

To break food into smaller pieces

c)

To bite your little brother/sister

d)

To eat apples and ONLY apples

30.

The test tubes in the photo represent a negative and positive result for

a)

Benedict's with glucose

b)

Biuret with protein

c)

Iodine with starch

d)

Ethanol with fat

31.

Which biomolecule does Benedict's solution test for?

a)

simple sugars

b)

complex starches

c)

proteins

d)

lipids

32.

This food belongs to which food group?

a)

Carbohydrate

b)

Protein

c)

Fat

d)

Fibre

33.

Jerry is on the rugby team and wants to build up his muscles, which food group intake he should increase ?

a)

Carbohydrates

b)

Fats

c)

Proteins

d)

vitamins

34.

Which of the following foods is a good source of carbohydrates?

a)
b)
c)
d)
35.

Which component of a healthy, balanced diet helps with constipation?

a)

Fibre

b)

Fats

c)

Minerals

d)

Protein

36.

Which component of a healthy, balance diet is responsible for providing energy before an event?

a)

Fats

b)

Proteins

c)

Carbohydrates

d)

Vitamins

37.

Which of the following factors determine the energy requirement of humans?

a)

Occupation/ Daily activities

b)

Age

c)

Gender

d)

All of the above

38.
Define the term 'balanced diet'.
a)
A diet containing some nutrients in the correct proportions.
b)
A diet containing most nutrients in the correct proportions.
c)
A diet containing none nutrients in the correct proportions.
d)
A diet containing all nutrients in the correct proportions.
39.

Which of the following correctly describes the purpose of digestion?

a)

To break down complex food molecules into simple soluble molecules

b)

To make complex food molecules from simple soluble molecules

c)

To make use of simple soluble food molecules

d)

To remove complex food molecules from the body

40.

Large food molecules need to be broken down to be small enough to pass through cell membranes.

a)

True

b)

False

41.

Why is the oesophagus muscular?

a)

To break the food into even smaller pieces

b)

To produce enzymes to digest food

c)

To push food from the mouth into the stomach

d)

To move the food back and forth in two directions

42.

Where does carbohydrate digestion begins?

a)

liver

b)

mouth

c)

oesophagus

d)

stomach

43.

Name the enzyme that acts on starch.

(a)  

44.

What colour will starch turn brown iodine solution into?

a)

blue-black

b)

colourless

c)

red

d)

yellow

45.
Rhythm-like smooth muscle contractions in the walls of the GI tract?
a)
De-glutition
b)
Reverse Peristalsis
c)
Peristalsis
d)
Cardiac activity
46.
What is the function of the digestive system?
a)
to break down and absorb nutrients
b)
to support and protect our bodies
c)
to produce vitamin D
d)
to help us move
47.
Choking on food is most likely caused by an interference with the proper functioning of the
a)
diaphragm
b)
nasal cavity
c)
bronchial tubes
d)
epiglottis
48.
Look at the diagram. In which structure does the initial digestion of carbohydrates occur?
a)
A - Mouth
b)
E - Small Intestine
c)
C - Stomach
d)
D - Pancreas
49.
In the image what is the name of part #3?
a)
1-Mouth
b)
3-Pancreas
c)
2-Stomach
d)
4-Large Intestine
50.
In the image what numbers are a part of the digestive tract?
a)
1, 2, 3, 5
b)
2, 3, 5
c)
1, 2, 6, 4
51.
The process that changes food into forms the body can use is called...
a)
perspiration
b)
digestion
c)
circulation
d)
respiration
52.
This is an image of the
a)
stomach
b)
small intestine
c)
esophagus
d)
large intestine
53.
Which organ system includes the esophagus, pancreas, and large intestine?
a)
digestive
b)
excretory
c)
integumentary
d)
lymphatic
54.
When you eat a cheeseburger, your digestive _______ digests the cheeseburger.
a)
glands
b)
organ
c)
system
d)
tissue
55.
Which organ is part of the digestive system?
a)
blood
b)
brain
c)
pancreas
d)
spleen
56.
Mouth to stomach to intestines.  What system helps the digestive system move food until it becomes waste?
a)
circulatory
b)
immune
c)
muscular
d)
skeletal
57.
Which organ is a secondary organ that stores bile?
a)
stomach
b)
gallbladder
c)
pancreas
d)
liver
58.
Which organ is made of three layers of muscles that continue mechanical digestion?
a)
stomach
b)
liver
c)
anus
d)
esophagus
59.
Predict the next digestive system organ in the following sequence: mouth, pharynx, esophagus, stomach, ______
a)
liver
b)
kidneys
c)
small intestines
d)
large intestines
60.
What is the short tube that stores solid waste until it is eliminated from the body through the anus?
a)
rectum
b)
liver
c)
esophagus
d)
stomach
61.

What are the 4 steps of digestion? (in order)

a)

ingestion, digestion, absorption, elimination

b)

digestion, absorption, elimination, ingestion

c)

ingestion, congestion, pregestion, elimination

d)

pre-gestion, congestion, digestion, elimination

e)

hard question, Sugestion, analyzation, pretention

62.

The mechanical and chemical breakdown of food into small particles and molecules that your body can absorb and use....

a)

ingestion

b)

elimination

c)

digestion

d)

absorption

63.

the removal of undigested food and other wastes from the body

a)

absorption

b)

elimination

c)

digestion

d)

ingestion

64.

a type of digestion where food is physically broken into smaller pieces...

a)

chemical digestion

b)

mechanical digestion

c)

indigestion

d)

automatic digestion

65.

A type of digestion where chemical reactions break down pieces of food into smaller molecules

a)

mechanical digestion

b)

indigestion

c)

chemical digestion

d)

such thing does not exist

66.

TRUE or FALSE:

Enzymes speed up, or catalyze the rate of chemical reactions.

a)

FALSE

b)

TRUE

67.

TRUE OR FALSE:

Enzymes change the chemical reaction

a)

TRUE, but not entirely

b)

FALSE, they just speed it up

c)

FALSE, they have no role in chemical reactions

68.

The digestive system produces enzymes that are specialized to help break down each type of

a)

food molecule

b)

chemical reaction

c)

bolus

d)

stool

69.

___________ are enzymes that help break down carbohydrates.

a)

Amylase

b)

Papain

c)

Lipase

d)

Pepsin

70.

___________ are enzymes that help break down fats.

a)

Lipase

b)

Amylase

c)

Papain

d)

Pepsin

71.

________ enzymes that help break down proteins.

a)

Amylase

b)

Lipase

c)

Pepsin

d)

Papain

72.

Food moves through the esophagus and the rest of the digestive tract by waves of muscle contractions called

a)

peristalsis

b)

homeostasis

c)

sonar waves

d)

tsunami waves

73.

The stomach:

a)

Does chemical digestion only

b)

Does mechanical digestion only

c)

Does both chemical and mechanical digestion

d)

Starts the chemical digestion of starchy foods

74.

The muscle of the esophagus squeeze the food to the

a)

Pharynx

b)

Stomach

c)

Large intestine

d)

Small intestine

75.

What breaks food into smaller pieces to begin mechanical digestion?

a)

Stomach

b)

Esophagus

c)

Amylase

d)

Teeth

76.

Which Glands associated with the Human Digestive System?

a)

Salivary glands and Pancreas

b)

Salivary glands and Liver

c)

Liver and Pancreas

d)

Salivary glands, Liver and Pancreas

77.

Which of the following is the longest part of the Alimentary Canal?

a)

A. Large intestine

b)

A. Small intestine

c)

A. Liver

d)

A. Stomach

78.

______________ are catalysts for chemical reactions in living things.

a)

Acids

b)

Bases

c)

Substrates

d)

Enzymes

79.
Which enzyme below is involved in the following chemical digestion process?
FATS---->FATTY ACIDS/GLYCEROL
a)
Lipase
b)
Trypsin
c)
Amylase
d)
Pepsin
80.
Which of the following is considered "acidic" on the pH scale?
a)
2
b)
7
c)
8
d)
14
81.
Where in the body would HCl be found?
a)
Mouth
b)
Esophagus
c)
Liver
d)
Stomach
82.
Where in the body would HCl be found?
a)
Mouth
b)
Esophagus
c)
Liver
d)
Stomach
83.
What breaks down food in stomach?
a)

enzymes

b)
salivary glands
c)
movement 
d)
time
84.
What does the mouth do?
a)
Break down the food to make it easier to swallow
b)
Slows down jaws
c)
Nothing
d)
Neither
85.
What is another name for enzymes?
a)
chemical catalyst
b)
microorganism
c)
biological catalyst
d)
catalyst
86.
The mouth contains salivary glands which produce
a)
polysaccharides
b)
amylases
c)
proteases
d)
lipases
87.
Which enzyme below is involved in the following chemical digestion process?
STARCH---->MALTOSE
a)
Lipase
b)
Salivary amylase
c)
Pepsin
d)
Trypsin
88.

If a solution has a pH of 3, it is considered an

a)

acidic solution.

b)

basic solution

c)

neutral solution.

d)

liquid solution.

89.

If a solution has a pH of 12, it is considered a

a)

basic solution.

b)

acidic solution.

c)

neutral solution.

d)

primary solution.

90.

When an enzyme changes shape due to heat or certain chemicals, what is this called?

a)

Denaturation

b)

Coenzyme

c)

Competitive inhibitor

d)

Non-competitive Inhibitor

91.

How do enzymes work?

a)

By raising the activation energy

b)

By lower the activation energy

c)

By providing water.

d)

By providing heat.

92.

The substance that an enzyme attracts to its active site it called

a)

the substrate

b)

the by-product

c)

the protein base

d)

the end product

93.

Chewing food would be a example of

a)

Chemical Digestion

b)

Mechanical Digestion

c)

Abdominal Digestion

d)

the digestive system.

94.

Lemon juice, coca cola, and coffee would all be examples of ____________ solutions.

a)

Neutral

b)

Basic

c)

Acidic

d)

Polyatomic

95.

The name of the enzyme that is produce in our salivary glands and helps break down simple sugars is

a)

pepsin

b)

benzene

c)

acetone

d)

amylase

96.
Saliva contains this enzyme to start the digestive process of carbohydrates.
a)
spit
b)
amylase
c)
hydrochloric acid
d)
sodium bicarbonate
97.
Bile is made by which digestive organ?
a)
Gallbladder
b)
Stomach
c)
Rectum
d)
Liver
98.

Enzymes are what type of molecule?

a)

carbohydrates

b)

proteins

c)

fats

d)

starch

99.

Which sentence is true?

a)

Amylase breaks down fats into fatty acid and glycerol

b)

Amylase breaks down starch into glucose

c)

Amylase breaks down starch into maltose

d)

Amylase breaks down proteins into amino acids

100.

Which sentence is true?

a)

Starch is a large, soluble molecule

b)

Starch digestion starts in the stomach

c)

Starch is a large, insoluble molecule

d)

Maltose breaks down maltase into glucose

101.

Which of the following is a monosaccharide?

a)

amino acids

b)

fatty acids

c)

glycerol

d)

glucose

102.

Which reagent would test for the presence of enzymes (proteins)?

a)

Benedict's solution

b)

iodine solution

c)

Biuret solution

d)

ethanol

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