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HUMAN &SOCIAL BIOLOGY DIAGNOSTIC TEST

Total questions: 51

Worksheet time: 32mins

Name
Class
Date
1.

Enzymes are sensitive to poison

a)

true

b)

false

2.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
3.
Each enzyme only has 1 substrate that will fit its active site.  What is this called?
a)
reusablility
b)
denaturation
c)
specificity
d)
fragility
4.
With what 3 letters do enzymes typically end?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
5.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
6.
Enzymes are...
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
7.
An enzyme speeds up a chemical reaction in the cell but can only be used once.  True or False? 
a)
true
b)
false
8.
What is another name for enzymes?
a)
chemical catalysts
b)
microorganisms
c)
biological catalysts
d)
inorganic catalysts
9.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
10.

Which 2 factors can affect the rate of enzyme activity?

a)

Light intensity

b)

Temperature

c)

pH

d)

Oxygen concentration

11.

Based on the graph, what temperature does this enzyme work best?

a)

15 C

b)

40 C

c)

30 C

d)

50 C

12.
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
13.

Which color line represent a reaction with an enzyme present?

a)

Blue

b)

Red

c)

Both

d)

Neither

14.

Identify the part of the tooth labelled A.

a)

Dentine

b)

Pulp

c)

Enamel

d)

Root

15.

Identify the structured labelled F

a)

Dentine

b)

Blood Vessels

c)

Pulp

d)

Root Canal

16.

Identify the structure labelled K

a)

Crown

b)

Root

c)

Enamel

d)

Dentine

17.

What should you do to take care of your teeth

a)

Eat sugary foods

b)

Avoid Water

c)

Drink lots of water

d)

Brush your teeth once a day

18.

How often should you try to brush your teeth

a)

Once a day

b)

Twice a day

c)

Three times a day

d)

Never

19.

How many teeth are there in the human body

a)

33

b)

34

c)

32

d)

43

20.

Which type of tooth is designed to grind food

a)

Canine

b)

Molar

c)

Incisor

d)

I dont know

21.

How many teeth do children have.

a)

32

b)

23

c)

20

d)

12

22.

The incisor is used to

a)

Grind food

b)

Cut food

c)

Tear food

d)

I dont know

23.

What is the type of the teeth used to tear food apart ? *

(a)  

24.

Choose for the correct statement. Tick 2 box only. *

a)

Example of teeth an adult is the milk teeth set

b)

The milk teeth set consists of 20 teeth

c)

The life span of the permanent teeth is shorter than the milk teeth

d)

Both the milk teeth and the permanent teeth sets have the canine, incisors and molars.

25.

which of the following is not type of teeth

a)

canines

b)

molarity

c)

molar

d)

incisor

26.

what is the function of these two teeth

a)

grinding

b)

holding

c)

biting

d)

cutting

27.

following are mechanisms of mechanical digestion except

a)

chewing food by teeth

b)

churning by stomach

c)

enzyme

d)

emusification of fats by bile

28.

what is produce by bacteria as by product of respiration and can cause tooth decay

a)

alkaline

b)

acid

c)

tartar

d)

plaque

29.

following are dental care suggested by dentists except

a)

do not brush your teeth

b)

brush your teeth regularly

c)

using floss to remove food particles

d)

use fluoride toothpaste

30.

diagram show human digestive system. in which organs does digestion of protein take place

a)

w and y

b)

w only

c)

x and z

d)

y and x

31.

which of the following is the correct function of bile

a)

to emulsify protein

b)

to provide enzyme

c)

to neutralize alkaline condition of foods that entering duodenum

d)

to increase the surface area for lipid digestion

32.

a student ate a meal contain biomolecule X. the digestion of biomolecule X starts in the mouth and finish at the small intestine. what is the product of digestion of biomolecule X

a)

amino acid

b)

glycerol

c)

glucose

d)

fatty acid

33.

contraction of circular and longitudinal muscle at the oesophagus is known as

a)

ingestion

b)

digestion

c)

peristalsis

d)

churning

34.

what is the function of hydrochloric acid in the gastric juice

a)

to stimulate growth of bacteria

b)

providing acidic medium for the action of pepsin

c)

to prepare alkaline medium for the action of pepsin

d)

to digest protein

35.

what is the product of protein digestion in the stomach

a)

dipeptide

b)

amino acid

c)

glyceride

d)

polypeptide

36.

what is the optimum pH for pepsin

a)

pH 5

b)

pH 9

c)

pH2

d)

pH7

37.

Our digestive system consists of

I. alimentary canal

II. glands

III. digestive juices

a)

I and II only

b)

I and III only

c)

II and III only

d)

I, II and III

38.

The process of breaking down food substances into small, simple forms in our body is called

a)

absorption

b)

ingestion

c)

digestion

39.

Ways to prevent tooth decay and periodontal disease:

I. use tooth paste containing fluoride

II. Brush teeth twice a day

III. clean adjacent tooth surfaces with dental floss

a)

I and II only

b)

I and III only

c)

II and III only

d)

I, II and III

40.

____________ is found in gastric jucie which helps for killing the micro-organism.

a)

hydrochloric acid

b)

sulphuruic acid

c)

carbonic acid

d)

cetric acid

41.

The alimentary canal starts at _________ and ends at _______.

a)

mouth, large intestine

b)

mouth, small intentine

c)

mouth, anus

d)

mouth, oesophagus

42.

Which of the following is/are involved in absorption?

a)

diffusion

b)

filtration

c)

hydrolysis

d)

active transport

43.

Which of the following are the structural adaptations of villi for absorption?

a)

The small intestine is very long that more time is provided for absorption of digested food.

b)

Microvilli are present on cell surfaces of epithelial cells to further increase surface area for absorption of digested food.

c)

The epithelial cell is one cell thick to shorten the diffusion distance of digested food.

d)

The epithelium is one cell thick to shorten the diffusion distance of digested food.

44.

The main site of absorption of water is

a)

stomach

b)

duodenum

c)

ileum

d)

colon

45.

Which of the following is/are absorbed into the network of blood capillaries of villi?

a)

Glycerol

b)

Glucose

c)

Glycogen

d)

Sucrose

46.

Which of the following is/are absorbed into the lacteals of villi?

a)

Glycerol

b)

Fat

c)

Fatty acids

d)

Vitamin A

47.

Which of the following is/are the function of colon?

a)

Digest food materials

b)

Absorb digested food

c)

Absorb water from indigestible materials

d)

Stores indigestible materials

48.

Which of the following is/are the function(s) of liver?

a)

Break down excess fatty acids

b)

Break down excess amino acids

c)

Storage of bile

d)

Storage of glycogen

49.

Egestion/defaecation refers to the removal of

a)

undigested food.

b)

indigested food.

c)

undigestible food.

d)

indigestible food.

50.
Your small intestine completes the process of chemical break down with help from these two organs:
a)
Stomach & Liver
b)
Liver & Kidneys
c)
Liver & Pancreas
d)
Liver & Large Intestine
51.
These produce vitamin K, produce gas, break down plant material, and give your feces an odor while living and growing in your intestines.  
a)
bacteria
b)
sugars
c)
protozoa
d)
fungi

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