Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

digestive system 1

Total questions: 132

Worksheet time: 1hrs 11mins

Name
Class
Date
1.

What carries food from the pharynx to the stomach?

a)

larynx

b)

trachea

c)

esophagus

d)

bronchioles

2.

What type of digestion takes place in the stomach?

a)

mechanical

b)

chemical

c)

both mechanical and chemical

3.

Where does the process of digestion begin?

a)

mouth

b)

esophagus

c)

stomach

d)

small intestine

4.

What enzyme is found in saliva that starts digesting carbohydrates?

a)

amylase

b)

chyme

c)

pepsin

d)

bile

5.

Where does the absorption of nutrients from food take place?

a)

stomach

b)

liver

c)

small intestine

d)

large intestine

6.

What makes the small intestine have such a large surface area?

a)

21 feet long

b)

villi

c)

microvilli

d)

all answers contribute

7.

What part of the digestive system mechanically and chemically breaks down food?

a)

mouth

b)

stomach

c)

both the mouth and stomach

8.

What chemically breaks down food into smaller molecules?

a)

teeth

b)

muscles of the stomach

c)

enzymes

9.

What are the rhythmic muscular contractions of your esophagus called to help food move along?

a)

swallowing

b)

peristalsis

c)

inertia contractions

d)

paralysis

10.

What does the pancreas do?

a)

produces digestive enzymes to break down proteins and fats

b)

produces sodium bicarbonate to neutralize stomach acid

c)

regulates our blood sugar levels

d)

all answers are correct

11.

Where does the digestion of proteins take place?

a)

Mouth and stomach

b)

Stomach and small intestine

c)

Mouth and small intestine

d)

Mouth, stomach and small intestine

12.

Where does the digestion of carbohydrates take place?

a)

Mouth

b)

Mouth and Stomach

c)

Mouth and small Intestine

d)

Mouth and large intestine

e)

Stomach

13.

Where does the digestion of lipids take place?

a)

Stomach

b)

Stomach and small intestine

c)

Small intestine

d)

Mouth, stomach and small intestine

e)

Mouth and small intestine

14.

What is the aim of the digestion?

a)

Obtain matter and energy

b)

Obtain nutrients from food and break it down into small molecules, which are then absorbed

c)

Break down food into inorganic nutrients

d)

Obtain nutrients form food and transport it to the cells

15.

Where does the absorption take place?

a)

Oesophagus

b)

Stomach

c)

Small intestine

d)

Large intestine

e)

Digestive tract

16.

What are the two components of the gastric juice?

a)

Pepsine and hydrochloric acid

b)

Saliva and bile

c)

Bile and hydrochloric acid

d)

Amyase and hydrochloric acid

17.

Which are the three juices released in the duodenum (small intestine)?

a)

Bile, pancreatic juice and gastric juice

b)

Bile, pancreatic juice and intestinal juice

c)

Bile, gastric juice and saliva

d)

Bile, intestinal juice and pancratic juice

18.

Which are the nutrients digested in the mouth?

a)

Carbohydrates and proteins

b)

Proteins

c)

Carbohydrates

d)

Fats

e)

All the abov

19.

. Which are the nutrients digested in the stomach?

a)

Carbohydrates

b)

Proteins

c)

Carbohydrates and proteins

d)

Fats

e)

All the above

20.

Which are the nutrients digested in the small intestine?

a)

Carbohydrates and proteins

b)

Proteins

c)

Carbohydrates, proteins and lipids

d)

Lipids and proteins

e)

Lipids

21.

What is the enzyme contained in the saliva?

a)

Amylase

b)

Pepsine

c)

Hydrochloride acid

d)

Lipase

22.

Where is the bile stored?

a)

Liver

b)

Gall bladder

c)

Pancreas

d)

Small intestine

23.

Which is the nutrient that bile facilitates its digestion?

a)

Proteins

b)

Lipids

c)

Carbohydrates

d)

Protein and lipids

24.

Where is the pancreatic juice released?

a)

Small intestine

b)

Stomach

c)

Large intestine

d)

Mouth

25.

Where is the gastric juice released?

a)

Stomach

b)

Small intestine

c)

Mouth

d)

Large intestine

26.

Where is the bile produced?

a)

Liver

b)

Pancreas

c)

Salivary glands

d)

Gall bladder

27.

Where is the bile released?

a)

Pancreas

b)

Liver

c)

Stomach

d)

Small intestine

e)

Mouth

28.

Where is the intestinal juice secreted?

a)

Small intestine

b)

Stomach

c)

Large intestine

d)

Pancreas

29.

What is the function of the villi?

a)

To increase the absorption surface

b)

To digest the last nutrients

c)

To form feces

d)

To comb the small intestine

30.

What is the function of the large intestine?

a)

The absorption of water and some vitamins, formation and storage of faeces

b)

The absorption of nutrients

c)

The digestion of fats

d)

Transport the nutrients to the blood stream

31.
Name this structure
a)
spleen
b)
gall bladder
c)
pancreas
d)
jejunum
32.
What  does not occur here?
a)
mechanical digestion
b)
chemical digestion
c)
absorption
d)
all occur here
33.
Mechanical digestion does NOT occur in the.....
a)
mouth
b)
stomach
c)
small intestine
d)
large intestine
34.

Proteins break down to:

a)

fatty acids

b)

nucleic acids

c)

amino acids

d)

hydrochloric acids

35.

Which of the following would be considered an essential nutrient?

a)

fat

b)

carbohydrates

c)

proteins

d)

fiber

e)

sugar

36.

Which of the following would not provide carbohydrates to the body?

a)

bread

b)

fruit

c)

candy

d)

chicken

37.

What is this organ (the one in red)?

a)

Pancreas

b)

Kidney

c)

Liver

d)

Stomach

38.

What is the process of wave-like muscle contractions that moves food through the digestive tract?

a)

Pericardium

b)

Peristalsis

c)

Pepsin

d)

Pericoronitis

39.

Where does absorption primarily take place?

a)

Stomach

b)

Small intestine

c)

Large intestine

d)

Gall bladder

40.

What is the term given to a ball-like mixture of food and saliva that forms in the mouth?

a)

Peristalsis

b)

Mucus

c)

Epiglottis

d)

Bolus

41.

What is the acidic fluid that passes from the stomach following churning?

a)

Bolus

b)

Chyme

c)

Hydrochloric acid

d)

Enzymes

42.

What are these structures call that are found on the lining of the small intestine?

a)

Gallbladder

b)

Villi

c)

Sphincter

d)

Duodenum

43.

Where does the digestion of carbohydrates take place?

a)

Mouth

b)

Mouth and Stomach

c)

Mouth and small Intestine

d)

Mouth and large intestine

e)

Stomach

44.

Where is the bile stored?

a)

Liver

b)

Gall bladder

c)

Pancreas

d)

Small intestine

45.

Where is the gastric juice released?

a)

Stomach

b)

Small intestine

c)

Mouth

d)

Large intestine

46.

Where is the bile produced?

a)

Liver

b)

Pancreas

c)

Salivary glands

d)

Gall bladder

47.
This is the enzyme that works on protein.
a)
pepsin
b)
HCl
c)
Bicarbonate
d)
Lactase
48.

Which of the following is NOT a nutrient?

a)

Fats

b)

Water

c)

Fiber

d)

Vitamins

49.

Enzymes are catalysts. What is a catalyst

a)

speeds up a chemical reaction

b)

slows down a chemical reaction

c)

has no effect on a chemical reaction

d)

it slows dow and speeds up a chemical reaction

50.

what are enzymes made up of?

a)

sugars

b)

proteins

c)

fats

d)

fiblre

51.

What are the functions of the digestive system?

a)

digestion, absorption, elimination

b)

ingestion, congestion, elimination

c)

congestion, digestion, elimination

52.

Where does most absorption of nutrients take place?

a)

Stomach

b)

Small intestine

c)

Large intestine

d)

Gall bladder

53.

Where is bile produced?

a)

Kidney

b)

Pancreas

c)

Liver

d)

Small intestine

54.

What are these structures call that are found on the lining of the small intestine?

a)

Gallbladder

b)

Villi

c)

Sphincter

d)

Duodenum

55.

Which organ churns food and uses acid and enzymes to break down food?

a)

stomach

b)

esophagus

c)

mouth

d)

epiglottis

56.

What is the function of the teeth and tongue

a)

chemical digestion

b)

break down food

c)

mechanical digestion

d)

they only chew food

57.

Enzymes in your saliva help break down food, this is an example of ...

a)

Mechanical digestion

b)

Chemical digestion

58.

This organ absorbs water from digested food

a)

small intestine

b)

stomach

c)

villi

d)

large intestine

59.

This organ produces several enzymes that chemically break down food, food does not pass through this organ

a)

liver

b)

pancreas

c)

gall bladder

d)

stomach

60.
What is an example of mechanical digestion?
a)
Churning of the stomach 
b)
 Saliva 
61.
The chewing and grinding of food into smaller pieces is an example of...
a)
Mechanical Digestion
b)
Chemical Digestion
62.
What stores bile?
a)
Colon
b)
Gall Bladder
c)
Small Intestine
63.

The muscular tube that moves food from the pharynx to the stomach?

a)

esophagus

b)

small intestine

c)

stomach

d)

mouth

64.
Enzymes and acids are examples of 
a)
mechanical digestion
b)
chemical digestion
65.
If the liver is not functioning properly, what would most likely be the result?
a)
food would not be able to move into the small intestsine
b)
fats would not be digested
c)
water would not be absored
d)
it would not affect digestion
66.
After dinner, you have a bad case of diarrhea. Which organ is most likely not functioning properly?
a)
stomach
b)
small intestine
c)
large intestine
d)
liver
67.

What are the functions of the digestive system?

a)

digestion, absorption, elimination

b)

ingestion, congestion, elimination

c)

congestion, digestion, elimination

68.

Where does most absorption of nutrients take place?

a)

Stomach

b)

Small intestine

c)

Large intestine

d)

Gall bladder

69.

Where is bile produced?

a)

Kidney

b)

Pancreas

c)

Liver

d)

Small intestine

70.

What are these structures call that are found on the lining of the small intestine?

a)

Cilia

b)

Villi

c)

Sphincter

d)

Duodenum

71.

Which organ churns food and uses acid and enzymes to break down food?

a)

stomach

b)

esophagus

c)

mouth

d)

epiglottis

72.

What is the function of the teeth and tongue

a)

chemical digestion

b)

break down food

c)

mechanical digestion

d)

they only chew food

73.

Enzymes in your saliva help break down food, this is an example of ...

a)

Mechanical digestion

b)

Chemical digestion

74.

This organ absorbs water from digested food

a)

small intestine

b)

stomach

c)

villi

d)

large intestine

75.

This organ produces several enzymes that chemically break down food and regulate blood sugar, food does not pass through this organ

a)

liver

b)

pancreas

c)

gall bladder

d)

stomach

76.
What stores bile?
a)
Colon
b)
Gall Bladder
c)
Small Intestine
77.

The muscular tube that moves food from the pharynx to the stomach?

a)

esophagus

b)

small intestine

c)

stomach

d)

mouth

78.
If the liver is not functioning properly, what would most likely be the result?
a)
food would not be able to move into the small intestsine
b)
fats would not be digested
c)
water would not be absored
d)
it would not affect digestion
79.
After dinner, you have a bad case of diarrhea. Which organ is most likely not functioning properly?
a)
stomach
b)
small intestine
c)
large intestine
d)
liver
80.

Which of the following answers correctly sequences the pathway food takes from the beginning to end?

a)

mouth, esophagus, stomach, small intestine, large intestine

b)

mouth, esophagus, stomach, large intestine, small intestine

c)

mouth, stomach, esophagus, small intestine, large intestine

d)

mouth, stomach, esophagus, large intestine, small intestine

81.

The mouth carries out

a)

mechanical digestion

b)

chemical digestion

c)

mechanical and chemical digestion

d)

No digestion

82.

Which of the following helps digest carbohydrates in the mouth...

a)

salivary amylase

b)

lysozymes

c)

mucin

d)

bolus

83.
Which structure prevents food from entering the trachea? 
a)
larynx
b)
soft palate
c)
pharynx
d)
epiglottis
84.
The involuntary muscular movement of food caused by smooth muscle is called
a)
bolus transport
b)
indigestion
c)
absorption
d)
peristalsis
85.
Food is chewed into smaller pieces and mixed with saliva here. What organ am I?
a)
mouth
b)
stomach
c)
small intestine 
d)
large intestine
86.
A muscular bag that produces digestive juice and mixes food around. What organ am I?
a)
mouth
b)
stomach
c)
small intestine 
d)
large intestine
87.
Digested food is absorbed here into the bloodstream. What organ am I?
a)
mouth
b)
stomach
c)
small intestine 
d)
large intestine
88.
A long and narrow muscular tube that relaxes and contracts, moving swallowed food into the stomach. What organ am I?
a)
gullet
b)
mouth
c)
small intestine 
d)
large intestine
89.
Digestion is completed here. What organ am I?
a)
gullet
b)
mouth
c)
small intestine 
d)
large intestine
90.
Undigested food goes here. Water and mineral salts from undigested food are absorbed. What organ am I?
a)
mouth
b)
stomach
c)
small intestine 
d)
large intestine
91.
In which organs does digestion occurs?
a)
mouth, stomach
b)
stomach, small intestine
c)
mouth, stomach, small intestine 
d)
mouth, stomach, large intestine
92.
Digestive juices are produced in the _______________. 
a)
mouth, stomach
b)
stomach, small intestine
c)
mouth, stomach, small intestine 
d)
mouth, stomach, large intestine
93.
Identify organ C. 
a)
gullet
b)
stomach
c)
small intestine 
d)
large intestine
94.
Identify organ D. 
a)
gullet
b)
stomach
c)
small intestine 
d)
large intestine
95.
Identify organ E. 
a)
gullet
b)
stomach
c)
small intestine 
d)
large intestine
96.
Identify organ B. 
a)
gullet
b)
stomach
c)
small intestine 
d)
large intestine
97.
This is an image of the
a)
stomach
b)
small intestine
c)
esophagus
d)
large intestine
98.
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
99.

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

100.

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

a)

True

b)

False

101.

Which enzyme does the stomach produce?

a)

amylase

b)

lipase

c)

maltase

d)

protease

102.

Where is the digestion of food completed?

a)

liver

b)

large intestine

c)

stomach

d)

small intestine

103.

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

104.

Where does carbohydrate digestion begins?

a)

liver

b)

mouth

c)

oesophagus

d)

stomach

105.

Where does protein digestion begins?

a)

large intestine

b)

mouth

c)

small intestine

d)

stomach

106.

Select all the enzymes present in the intestinal juice.

a)

amylase

b)

lipase

c)

maltase

d)

protease

107.

Which of the following kills bacteria in the human alimentary canal?

a)

gastric juice

b)

mucus

c)

pancreatic juice

d)

saliva

108.

Which of the following is not a final product of digestion?

a)

Maltose

b)

fatty acids and glycerol

c)

amino acids

d)

glucose

109.

A part of digestive system that secretes bile for emulsifying fats

a)

Liver

b)

Lungs

c)

Gall Bladder

d)

Pancreas

110.

Which organ stores bile?

a)

stomach

b)

gallbladder

c)

pancreas

d)

liver

111.
Which type of digestion produces physical change to the food by breaking food into smaller pieces?
a)
chemical
b)
peristalsis
c)
mechanical
d)
saliva
112.
How does food move through your digestive system?
a)
by gravity pulling it down
b)
when we eat more food, it forces the rest down
c)
muscle movements called peristalsis
d)
electromagnetic force
113.
What organ is this?
a)
stomach
b)
small intestine
c)
large intestine
d)
esophagus
114.
When many large carbohydrates are chemically digested they are broken into many smaller _____
a)
proteins
b)
amino acids
c)
simple sugars
d)
enzymes
115.
Where does chemical digestion begin?
a)
mouth
b)
esophagus
c)
stomach
d)
small intestine
116.

At the end of the digestion process, protein will be broken down into

a)

glucose

b)

amino acid

c)

polypeptide

d)

glycerol and fatty acid

117.

At the end of the digestion process, fat will be broken down into

a)

fatty acid and glycerol

b)

glucose

c)

amino acid

d)

fatty acid

118.

Recall which part of the digestive system is indicated by the red arrow in the picture below.

a)

Liver

b)

Rectal Cavity

c)

Small Intestine

d)

Large Intestine

119.

Identify what part of the digestive system is described in the following statement below.

"Stores food, and mixes it with gastric acid."

a)

Oesophagus

b)

Stomach

c)

Rectal Cavity

d)

Oral Cavity

120.

Determine what is the labelled structure and explain its function.

4 lines
121.

Recall what mechanical digestion is.

a)

Where you replace part of your digestive tract with complex machinery

b)

The act of drinking special chemicals after a meal to aid your digestion

c)

The process of physically breaking up food into smaller pieces

d)

The process of converting large complex food molecules into simpler molecules

122.

Cheese fondue is a popular dinner dish in some countries. In the small intestine, the fat from the cheese is converted into simpler fatty acids and glycerol.

Identify which type of digestion this is.

a)

Mechanical

b)

Chemical

123.

Recall what type of molecule enzymes are.

a)

Proteins

b)

Carbohydrates

c)

Nucleic Acids

d)

Lipids

124.

Recall what a biological catalyst is.

a)

A substance that increases activation energy in cells

b)

A protein that can slow a reaction

c)

A substance that speeds up reactions in living things

d)

A chemical that can react with a substrate

125.

Recall why we need to break down macromolecules into monomers during digestion.

a)

To allow the molecules to be absorbed

b)

To release energy by respiration

c)

To help the molecules move down the gut

d)

To product heat to keep us warm

126.

Recall what type of enzyme breaks down starch into sugars

a)

Lipase

b)

Protease

c)

Amylase

d)

Nuclease

127.

Recall where in the body amylase digests carbohydrates.


Select ALL correct options

a)

Small Intestine

b)

Stomach

c)

Mouth

d)

Pancreas

e)

Liver

128.

Recall what kind of molecule starch is

Select ALL correct options

a)

Lipid

b)

Protein

c)

Polysaccharide

d)

Monosaccaride

e)

Carbohydrate

129.

Recall another name for digestion of macromolecules into smaller molecules.

a)

Assimilation

b)

Condensation

c)

Hydrolysis

d)

Absorption

130.

Recall what lipids are.

Select ALL correct options

a)

Fats

b)

Carbohydrates

c)

Sugars

d)

Oils

131.

Recall what molecules are formed when a lipid is hydrolysed.

a)

Glycerol

b)

Starch

c)

Protein

d)

Fatty Acids

e)

Maltose

132.

Explain why different digestive enzymes have different optimum pH values.

4 lines

Similar Resources on Wayground

IPC Unit 5 Review

127 questions

IPC Unit 5 Review

quiz

Worksheet

•

8th - 11th Grade

KS3 SCIENCE: Periodic Table and Preparing Salts

127 questions

KS3 SCIENCE: Periodic Table and Preparing Salts

quiz

Worksheet

•

8th - 9th Grade