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Digestive System Quiz

Total questions: 22

Worksheet time: 14mins

Name
Class
Date
1.

Enzymes is a type of

a)

Fats

b)

Carbohydrates

c)

Proteins

d)

Minerals

2.

What is the optimal pH for reaction of amylase to happen to its optimum?

a)

7

b)

3

c)

10

d)

4

3.

The optimum temperature for an enzyme catalyses reaction is 37oC. What happened if the temperature continues to increase until over 40oC ?

a)

The enzyme destroyed

b)

The enzyme denatured

c)

The enzyme dies

d)

The enzyme still perform to its optimum

4.
Enzymes are considered to be 
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
5.
What is the purpose  of an enzyme?
a)
give permission for the reaction
b)
raise activation energy
c)
speed up reactions
d)
control how many reactions occur
6.
Based on the graph, what temperature does this enzyme work best? 
a)
15 C
b)
40 C
c)
30 C
7.
Most enzymes have the ending:
a)
-ase
b)
-ose
c)
-ic acid
d)
-ate
8.
At high temperatures enzyme activity declines because of:
a)
Denaturation
b)
Decreased Kinetic Motion
c)
Increased H-Bonding
d)
Dissociation of Ionic Compounds
9.

How does chemical digestion work?

a)

Enzymes from the digestive system react with larger molecules to break them into smaller usable molecules

b)

Chewing and swallowing food breaks large bites of food into smaller pieces

10.

Which two factors have a big influence on the rate a which most enzymes work?

a)

pH and temperature

b)

pH and light

c)

temperature and soil depth

d)

pH and time of the day

11.
A fluid in the mouth that helps digest food.
a)
pepsin
b)
pepsi
c)
saliva
d)
salty
12.
Provides additional enzymes(pancreatic juice) to help nutrients get absorbed by the small intestine.
a)
liver
b)
kidneys
c)
gall bladder
d)
pancreas
13.
a)
esophagus
b)
liver
c)
stomach
d)
pancreas
14.
a)
stomach
b)
pancreas
c)
large intestine
d)
small intestine
15.
The chewing and grinding of food into smaller pieces is an example of...
a)
Mechanical Digestion
b)
Chemical Digestion
16.

Where does digestion begin?

a)

Our teeth

b)

Our stomach

c)

The esophogus

d)

Small intestines

17.
What is the definition for digestion?
a)
Breaking down food into smaller nutrients
b)
Getting rid of waste products
c)
Getting food into our bodies
d)
Getting nutrients into our bloodstream, so that our cells can use them
18.
The muscular tube that moves food from the mouth to the stomach?
a)
esophagus
b)
small intestine
c)
stomach
d)
mouth
19.
Enzymes and acids are examples of 
a)
mechanical digestion
b)
chemical digestion
20.
Nutrients from digested food are absorbed in which digestive organ?
a)
Small Intestine
b)
Stomach
c)
Large Intestine
d)
Gallbladder
21.
what are 2 types of digestion 
a)
comotive digestion&chemical digestion 
b)
mechanical digestion & chemical digestion 
c)
forceful digestion & comotive digestion
d)
chemical digestion & motor digestion 
22.

Muscle contraction that keep food moving alone in one direction through the digestive system.

a)

epiglottis

b)

nephrons

c)

peristalsis

d)

enzymes

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