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Grade 9 Reviewer Sem 1

Total questions: 99

Worksheet time: 1hrs 26mins

Name
Class
Date
1.

What is the process of respiration?

a)

Breathing in to get oxygen

b)

The release of energy from food

c)

The production of energy by the body itself

d)

Oxygen transfer

2.

What substance do we need to breathe in?

a)

Water

b)

Carbon dioxide

c)

Oxygen

d)

Carbon monoxide

3.

What substance do we need to breathe out?

a)

Water

b)

Carbon dioxide

c)

Oxygen

d)

Carbon monoxide

4.
What is this?
a)
Trachea
b)
Vocal Cord
c)
Aveoli
d)
Pharynx
5.
What is the equation for respiration?
a)

carbon dioxide + water --> oxygen + glucose

b)
food + energy --> oxygen + water
c)

oxygen + glucose --> carbon dioxide + water + Energy 

d)
Carbon dioxide + glucose --> water + oxygen
6.

What is the name for the microscopic air sacs at the end of the bronchioles?

a)

alveoli

b)

ravioli

7.

When air is pushed OUT of the lungs, what is the correct order for the tubes it passes through?

a)

bronchiole -> bronchi -> trachea -> nose

b)

bronchi -> bronchiole -> trachea -> nose

c)

trachea-> bronchi -> bronchiole-> nose

8.

What muscles are used in breathing in

a)

diaphragm and intercostals

b)

diaphragm and lungs

c)

Abdominals

9.

Which one of these is NOT a function of the alveoli?

a)

Warm air as it is breathed in

b)

Transfer carbon dioxide

c)

Gas exchange

d)

Transfer oxygen

10.
Which produces more energy - aerobic or anaerobic respiration?
a)
Anaerobic
b)
Aerobic
c)
Both the same
11.
What is the main function of the respiratory system?
a)
to provide oxygen and remove carbon dioxide from the body
b)
to bring oxygen to the body
c)
to break down food and absorb nutrients
d)
to remove oxygen from the body and deliver carbon dioxide
12.

How does an increase in lung volume lead to air entering the lungs?

a)

Produces higher pressure

b)

Produces lower pressure

13.

Breathing out; exhalation of breath.

a)

Inspiration

b)

Expiration

14.

The muscle that must contract for respiration to occur

a)

diaphragm

b)

pectoralis major

c)

rectus abdominis

d)

sternocleidomastoid

15.

Which of the following shows what happens to the chest cavity when air rushes into the lungs?

a)

decrease in volume

b)

deflates

c)

expands

d)

relaxes

16.

During exhalation, what will happen to these respiratory organs?

a)

Diaphragm moves downward and flatten

b)

Rib cage moves upwards and outwards

c)

intercostal muscles relax

d)

Intercostal muscles contract

17.

The composition of the oxygen in inspired air is ...

a)

21%

b)

16%

c)

4%

d)

0.04%

18.

The composition of inspired air

a)

it has more oxygen, less carbon dioxide, less water vapour

b)

it has more oxygen, more carbon dioxide, more water vapour

c)

it has more oxygen, less carbon dioxide, more water vapour

d)

It has less oxygen, more carbon dioxide, less water vapour

19.

The composition of expired air

a)

it has more oxygen, less carbon dioxide, less water vapour

b)

it has more oxygen, more carbon dioxide, more water vapour

c)

it has more oxygen, less carbon dioxide, more water vapour

d)

It has less oxygen, more carbon dioxide, more water vapour

20.

What are the tiny air sacs on the surface of the lungs?

a)

Alveolus

b)

Capillaries

c)

A-Levels

d)

Alveoli

21.

Exchange of gases takes place in the ___________ part of the lungs

a)

Bronchi

b)

Bronchiole

c)

Alveoli

22.
Where is the bronchi?
a)
A
b)
B
c)
C
d)
D
23.

Gas exchange is needed to supply _____________ to cells and remove __________________ from cells. Hint: look under ALVEOLI in your notes.

a)

carbon dioxide; oxygen

b)

oxygen; food

c)

oxygen; carbon dioxide

d)

carbon dioxide; water

24.

Which of the following are features of the alveoli that adapt them to gas exchange?

I. High surface area

II. Thin walls

III. Dry surfaces

a)

I and II only

b)

I only

c)

II and III

d)

I, II, and III

25.

Given the following structures:

1. alveoli

2. bronchi

3. bronchioles

Which of the following is the correct order in which air would flow after inhalation?

a)

1,2,3

b)

2,1,3

c)

2,3,1

d)

3,2,1

26.

What adaptations does the alveoli have for efficient gas exchange?

a)

thick walls

b)

thin walls

c)

small surface area

27.

what is found around alveoli?

a)

capillaries

b)

pleura

c)

lymphatic nodes

d)

saliva

28.
Given the following structures:
1. larynx
2. nasal cavity
3. pharynx
4. trachea
Which of the following is the correct order that air would flow during inhalation. 
a)
1,2,3,4
b)
2,3,1,4
c)
2,1,3,4
d)
4,2,3,1 
29.

What is the name of the movement of oxygen in and carbon dioxide out of the body.

a)

transpiration

b)

respiration

c)

digestion

d)

ventilation

30.
The movement of oxygen from the alveoli to the blood and from the blood to the tissues is due to the process of... 
a)
osmosis
b)
diffusion
c)
cytokinesis
d)
phagocytosis
31.

All gas exchange systems have...

a)

large surface areas

b)

small surface areas

32.

Gas exchange is needed to supply _____________ to cells and remove __________________

a)

carbon dioxide; oxygen

b)

oxygen; food

c)

oxygen; carbon dioxide

d)

carbon dioxide; water

33.

Recall two important features of the alveolar wall for gas exchange to occur. Select All correct options.

a)

It is thick

b)

It is thin

c)

It is moist

d)

It is dry

34.

The lining of the nasal cavity is covered with a thin film of mucus. What is the importance of the mucus?

a)

It warms up the inhaled air.

b)

It helps remove dust from the incoming air.

c)

It lubricates the passage of air into the respiratory trac.

d)

It helps dissolve oxygen in the inhaled air for gas exchange.

35.

What are the after-effects of smoking?

a)

Fainting

b)

Stroke

c)

Becoming sad

d)

Stomach cancer

36.

What does carcinogenic mean?

a)

Cancer causing

b)

Deadly

c)

Life-threatening

d)

Extremely dangerous

37.

What is tar?

a)

An addictive substance

b)

A brown colour carcinogenic substance

c)

A type of ciggarate

d)

Helps to stop addiction to smoking

38.

Nicotine is a ____________.

a)

drug

b)

stimulant

c)

cancer

d)

gateway

39.

Which blood vessel returns blood to the heart?

a)

arteries

b)

veins

c)

capillaries

d)

coronary arteries

40.

Which blood vessel has the thickest wall?

a)

veins

b)

artery

c)

capillary

d)

tunica externa

41.

What is one things that veins have that arteries don't?

a)

many elastic fibers in walls

b)

corrugated inner surface

c)

thick walls

d)

valves preventing backflow

42.

Which substances are dissolved in human blood plasma?

a)

A

b)

B

c)

C

d)

D

43.

Which chamber of the heart has the thickest muscle wall?

a)

A

b)

B

c)

C

d)

D

44.

Before blood in W reaches Z it must

a)

A

b)

B

c)

C

d)

D

45.

Which blood vessel has a high carbon dioxide concentration, a low oxygen concentration and a high blood pressure?

a)

A

b)

B

c)

C

d)

D

46.

Which part pumps blood to the aorta?

a)

A

b)

B

c)

C

d)

D

47.

Which statement is correct for most veins in the human body?

a)

A

b)

B

c)

C

d)

D

48.

Which component causes the blood to start clotting?

a)

A

b)

B

c)

C

d)

D

49.

What is the correct order for the stages after stage P?

a)

A

b)

B

c)

C

d)

D

50.

What is the correct sequence for blood being pumped from the heart to the lungs?

a)

A

b)

B

c)

C

d)

D

51.

Why is the circulatory system of mammals described as a double circulation?

a)

A

b)

B

c)

C

d)

D

52.

Which substance is transported by haemoglobin?

a)

A

b)

B

c)

C

d)

D

53.

In which list do all three blood vessels carry oxygenated blood?

a)

A

b)

B

c)

C

d)

D

54.

In a person with a low platelet level, which process is slower than normal?

a)

A

b)

B

c)

C

d)

D

55.

Which letter on the graph is at a time when the person is doing this exercise?

a)

A

b)

B

c)

C

d)

D

56.

Which diagram shows the human double circulatory system?

a)

A

b)

B

c)

C

d)

D

57.

Which identifies parts P, Q, R and S of the blood?

a)

A

b)

B

c)

C

d)

D

58.

Through which chamber does oxygenated blood enter after leaving the lungs?

a)

Left ventricle

b)

Right ventricle

c)

Left atrium

59.

What is the function of white blood cells?

a)

transport oxygen

b)

fight against infection

c)

clotting

d)

all the above

60.

Pulmonary artery carries what type of blood

a)

Oxygenated

b)

mixed

c)

pure blood

d)

Deoxygenated

61.

Human heart has -----------chambers

a)

3

b)

2

c)

4

d)

1

62.
What part of blood is responsible for carrying oxygen to body cells?
a)
Red Blood Cells
b)
White Blood Cells
c)
Platelets
d)
Plasma
63.

A substance that can be hammered into sheets or is bendable.

a)

malleable

b)

brittle

c)

insulator

d)

shiny

64.

A substance that breaks into pieces.

a)

Brittle

b)

Malleable

c)

Conductor

d)

Dull

65.

How well a substance allows heat or electricity to flow through it.

a)

Malleablility

b)

Conductivity

c)

Luster

d)

Ductile

66.

A substance that does NOT allow heat or electricity to flow through it.

a)

Insulator

b)

Conductor

c)

Semiconductor

d)

Magnetic

67.
Which of the following is a physical characteristic of a nonmetal?
a)
texture
b)
malleable
c)
brittle
d)
semi-conductor
68.
Which of the following is a physical characteristic of a metalloid?
a)
texture
b)
malleable
c)
brittle
d)
semi-conductor
69.
An element has properties of both metals and nonmetals. Where would it be found in the periodic table? 
a)
To the right 
b)
To the left 
c)
on the zig zag line
70.
How would this element be classified?
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Metamorphic
71.

Elements in the shaded area can best be described as -

a)

Semi-conductors

b)

Insulators

c)

Ductile

d)

Siny

72.
Look at the periodic table that is provided. Where would metals be located? 
a)
to the left of the table 
b)
to the right of the table 
c)
in the zigzag line 
73.

I can be drawn into wires

a)

Malleable

b)

Ductile

c)

Luster

d)

Conductor

74.

Which of these elements is a metalloid?

a)

Antimony (Sb)

b)

Aluminum (Al)

c)

Bismuith (Bi)

d)

Oxygen (O)

75.
Fluorine is used in many tooth pastes because it helps maintain healthy teeth.  At room temperature it is gaseous, and does not conduct electricity. Based off these properties, it would be classified as?
a)
A metal
b)
A non metal
c)
A metalloid
76.
Pure sodium has luster, bends easily, and conducts electricity.  Based off these properties, it would be classified as?
a)
A Metal
b)
A non metal
c)
A metalloid
77.
´Elizabeth was examining elements and their physical properties. She described an element is her science journal as having no shine, an insulator, and  very brittle. What would this element be a metal, nonmetal, or metalloid?
a)
metal 
b)
nonmetal 
c)
metalloid
78.

You found an element that has a high luster, is a poor conductor of electricity, has a high melting point, and doesn't react with acid. The substance you found is most likely a

a)

Metal

b)

Non-Metal

c)

Metalloid

79.

By looking at the element illustrated here, how might you classify it by appearance?

a)

Metal

b)

Non-Metal

c)

Metalloid

80.

According to the Periodic Table, which of the following elements would NOT be considered a metalloid?

a)

Silicon

b)

Antimony

c)

Carbon

81.

Metalloids are found

a)

along the staircase (zig-zag line) on the Periodic Table

b)

on the right side of the Periodic Table

c)

on the left side of the Periodic Table

82.

Metals create _________ ions, because they give away (lose) electrons.

a)

positive

b)

negative

c)

neutral

83.

You've discovered a new element that does not conduct electricity, has a dull appearance, has a low melting point, and does not react with acid or Copper II chloride (CuCl2). How would you classify this element?

a)

Non-Metal

b)

Metalloid

c)

Metal

84.
What is electrolysis?
a)
breaking down of a compound using a current
b)
making a compound using a current
85.
What is the name given to the solution that is being electrolysed?
a)
Salt solution
b)
Electric solution
c)
Mineral solution
d)
Electrolyte
86.

What is the product at the negative electrode in the electrolysis of Copper sulfate solution

a)

Copper

b)

Iodine

c)

Hydrogen

d)

Oxygen

87.

When diluted sodium chloride solution is electrolysed what was produced in the negative electrode?

a)
Hydrogen
b)
Oxygen
c)
Chlorine
d)
Sodium
88.
What happens at the positive electrode?
a)
Positive non-metal ions are attracted
b)
Positive metal ions are attracted
c)
Negative non-metal ions are attracted
d)
Negative metal ions are attracted
89.
Acid + Metal --> ?
a)
Salt + Water
b)
Salt + Hydrogen
c)
Salt
d)
Hydrogen
90.
Magnesium + sulphuric acid --> ?
a)
magnesium sulfate + water
b)
magnesium sulfate + hydrogen
c)
magnesium chloride + hydrogen
d)
magnesium chloride + water
91.
Zinc + nitric acid --> ?
a)
zinc sulfate + water
b)
zinc sulfate + hydrogen
c)
zinc nitrate + hydrogen
d)
zinc chloride + water
92.
What gas is produced when a metal reacts with an acid?
a)
Water vapour
b)
Acidic gas
c)
Hydrogen
d)
Nitrogen
93.
Which salt will be produced if magnesium react with hydrochloric acid?
a)
Magnesium oxide
b)
Magnesium sulfate
c)
Magnesium sulfide
d)
Magnesium chloride
94.
Which of the following is the product of the reaction of aluminium and oxygen?
a)
aluminium oxide.
b)
metal oxide
c)
aluminium ore
d)
aluminium and oxygen
95.

What is produced when magnesium reacts with water?

a)
Copper hydroxide
b)
Magnesium oxide
c)

Magnesium chloride

d)
Magnesium hydroxide
96.
What gas is always produced when a metal reacts with water?
a)
Oxygen
b)
Carbon dioxide
c)
Hydrogen
d)
Carbon monoxide
97.

What happens when iron reacts with dilute hydrochloric acid?

a)

Iron chloride + water

b)

Iron chloride + hydrogen

c)

Iron hydroxide + hydrogen

d)

Iron oxide

98.

What is produced when sodium reacts with steam?

a)

Sodium oxide and hydrogen gas

b)

Sodium hydroxide and hydrogen gas

c)

Sodium hydroxide and oxygen gas

d)

Sodium oxide and oxygen gas

99.

When metal reacts with steam the products are...

a)
metal hydroxide and oxygen gas
b)
metal hydroxide and hydrogen gas
c)
metal oxide and oxygen gas
d)
metal oxide and hydrogen gas

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