Master the Respiratory System: Interactive Quizzes for Biology Year 12

Question 1

Which of the following is NOT a primary function of the respiratory system?

Accepted Answer

Production of white blood cells

Answer

Gas exchange

Answer

Regulation of blood pH

Answer

Voice production

Question 2

What is the primary function of the alveoli?

Accepted Answer

Gas exchange

Answer

Mucus production

Answer

Air purification

Answer

Temperature regulation

Question 3

Which type of cells line the respiratory tract and produce mucus?

Accepted Answer

Goblet cells

Answer

Alveolar cells

Answer

Bronchial cells

Answer

Pneumocytes

Question 4

What mechanism allows air to enter and exit the lungs?

Accepted Answer

Inspiration and expiration

Answer

Diffusion

Answer

Osmosis

Answer

Active transport

Question 5

What is haemoglobin's role in the respiratory system?

Accepted Answer

Oxygen transport

Answer

Carbon dioxide transport

Answer

pH regulation

Answer

Preventing blood clotting

Question 6

How do inspiration and expiration differ?

Accepted Answer

Inspiration is active, expiration is passive

Answer

Expiration is active, inspiration is passive

Answer

Both are active processes

Answer

Both are passive processes

Question 7

How are oxygen and carbon dioxide exchanged between the blood and alveoli?

Accepted Answer

Diffusion

Answer

Osmosis

Answer

Active transport

Answer

Facilitated diffusion

Question 8

Which of the following is NOT a primary function of the respiratory system?

Accepted Answer

Food digestion

Answer

Gas exchange

Answer

pH balance regulation

Answer

Temperature regulation

Question 9

In which structure of the respiratory system does gas exchange occur?

Accepted Answer

Alveoli

Answer

Trachea

Answer

Bronchioles

Answer

Pleura

Question 10

Which muscle is primarily responsible for inhalation?

Accepted Answer

Diaphragm

Answer

Intercostal muscles

Answer

Abdominal muscles

Answer

Pectoralis major

Question 11

What is the term for the movement of gases across the respiratory membrane?

Accepted Answer

Gas exchange

Answer

Inspiration

Answer

Expiration

Answer

Pulmonary ventilation

Question 12

What is the primary function of the ciliated cells lining the respiratory tract?

Accepted Answer

To move mucus and foreign particles upwards

Answer

To secrete surfactants to reduce surface tension

Answer

To exchange gases with the bloodstream

Answer

To regulate airway diameter

Question 13

How are the respiratory and circulatory systems interconnected?

Accepted Answer

They collaborate to transport oxygen and carbon dioxide throughout the body.

Answer

The respiratory system supplies oxygen to the circulatory system.

Answer

The circulatory system eliminates carbon dioxide from the respiratory system.

Answer

They operate independently with no direct interaction.

Question 14

Which of the following is a primary function of the respiratory system?

Accepted Answer

Gas exchange

Answer

Regulation of blood pH

Answer

Transportation of nutrients

Answer

Production of sound

Question 15

What is the primary role of cilia in the respiratory system?

Accepted Answer

To trap and remove foreign particles

Answer

To facilitate gas exchange

Answer

To regulate airflow

Answer

To produce mucus

Question 16

Which of the following factors does NOT significantly affect the rate of respiration?

Accepted Answer

Blood sugar levels

Answer

Physical activity

Answer

Body temperature

Answer

Partial pressure of oxygen in the blood

Question 17

Which of the following diseases is characterized by inflammation and narrowing of the airways, making breathing difficult?

Accepted Answer

Asthma

Answer

Emphysema

Answer

Pneumonia

Answer

Tuberculosis

Question 18

What is the primary function of the diaphragm in respiration?

Accepted Answer

To expand the thoracic cavity during inhalation

Answer

To contract the lungs during exhalation

Answer

To regulate airflow

Answer

To protect the heart

Question 19

Which of the following gases is a waste product produced during cellular respiration?

Accepted Answer

Carbon dioxide

Answer

Oxygen

Answer

Nitrogen

Answer

Water vapour

Question 20

What is the primary role of the epiglottis during swallowing?

Accepted Answer

To prevent food or liquid from entering the trachea

Answer

To facilitate the passage of air into the lungs

Answer

To regulate the airflow during breathing

Answer

To protect the vocal cords from damage

Question 21

How does emphysema affect lung function, leading to shortness of breath and reduced gas exchange efficiency?

Accepted Answer

Alveolar destruction decreases the surface area available for gas exchange.

Answer

Emphysema weakens diaphragm and intercostal muscles, hindering their ability to contract.

Answer

Emphysema thickens the pleura, impairing gas exchange.

Answer

Emphysema causes excessive mucus production, obstructing airways.

Question 22

During gas exchange in the lungs, which substance diffuses from the alveoli into the blood?

Accepted Answer

Oxygen

Answer

Carbon dioxide

Answer

Nitrogen

Answer

Water vapor

Question 23

Which muscle is primarily responsible for initiating inspiration?

Accepted Answer

Diaphragm

Answer

Intercostal muscles

Answer

Abdominal muscles

Answer

Trapezius

Question 24

What is the term for the pressure exerted by a specific gas in a mixture?

Accepted Answer

Partial pressure

Answer

Total pressure

Answer

Vapor pressure

Answer

Osmotic pressure

Question 25

What is the function of the surfactant lining the alveoli?

Accepted Answer

To decrease surface tension

Answer

To increase surface tension

Answer

To prevent gas exchange

Answer

To promote infection

Question 26

Which disease is characterized by chronic inflammation and airflow obstruction in the airways?

Accepted Answer

Asthma

Answer

Pneumonia

Answer

Emphysema

Answer

Tuberculosis

Question 27

Which of the following is NOT a primary function of the respiratory system?

Accepted Answer

Detoxification of harmful substances

Answer

Gas exchange

Answer

Regulation of blood pH

Answer

Thermoregulation

Question 28

The primary site of gas exchange in the lungs is the:

Accepted Answer

Alveoli

Answer

Trachea

Answer

Bronchi

Answer

Pleura

Question 29

The primary mechanism by which carbon dioxide is transported in the blood is through:

Accepted Answer

Bicarbonate ions

Answer

Carbaminohemoglobin

Answer

Dissolved in plasma

Answer

Hemoglobin

Question 30

Which of the following respiratory disorders is characterized by inflammation and narrowing of the airways?

Accepted Answer

Asthma

Answer

Emphysema

Answer

Chronic bronchitis

Answer

Cystic fibrosis

Question 31

Which of the following structures is primarily responsible for the regulation of breathing by the central nervous system?

Accepted Answer

Medulla oblongata

Answer

Pons

Answer

Cerebellum

Answer

Thalamus

Question 32

Which of the following is NOT a primary function of the respiratory system in humans?

Accepted Answer

Secretion of hormones

Answer

Gas exchange

Answer

Regulation of pH

Answer

Protection against infection

Question 33

In the lungs, the primary site for gas exchange is the:

Accepted Answer

Alveoli

Answer

Trachea

Answer

Bronchi

Answer

Pleural cavity

Question 34

Which of the following structural adaptations increases the surface area available for gas exchange in the lungs?

Accepted Answer

Alveolar septa

Answer

Pleura

Answer

Bronchioles

Answer

Tracheal rings

Question 35

The movement of oxygen and carbon dioxide across respiratory surfaces, from areas of higher concentration to lower concentration, is known as:

Accepted Answer

Diffusion

Answer

Osmosis

Answer

Active transport

Answer

Facilitated diffusion

Question 36

Which of the following factors does NOT affect the rate of diffusion of gases across respiratory surfaces?

Accepted Answer

Electrical potential

Answer

Concentration gradient

Answer

Surface area

Answer

Temperature

Question 37

The primary muscle responsible for inhalation in humans is the:

Accepted Answer

Diaphragm

Answer

Intercostal muscles

Answer

Abdominal muscles

Answer

Pectoralis major

Question 38

Which of the following is a common respiratory disorder characterized by chronic inflammation and narrowing of the airways?

Accepted Answer

Asthma

Answer

Emphysema

Answer

Pneumonia

Answer

Bronchitis

Question 39

Which of the following is considered a modifiable risk factor for developing respiratory diseases?

Accepted Answer

Air pollution

Answer

Genetic predisposition

Answer

Aging

Answer

Family history

Question 40

In addition to gas exchange, the respiratory system also plays a crucial role in maintaining:

Accepted Answer

Acid-base balance

Answer

Electrolyte balance

Answer

Hormone balance

Answer

Water balance

Question 41

Which of the following structures is NOT a component of the upper respiratory tract?

Accepted Answer

Alveoli

Answer

Pharynx

Answer

Nasal cavity

Answer

Larynx

Question 42

During inhalation, what happens to the diaphragm and rib cage?

Accepted Answer

Diaphragm contracts and rib cage expands

Answer

Diaphragm relaxes and rib cage expands

Answer

Diaphragm relaxes and rib cage contracts

Answer

Diaphragm contracts and rib cage contracts

Question 43

Which of the following gases is primarily transported in the blood bound to haemoglobin?

Accepted Answer

Oxygen

Answer

Carbon dioxide

Answer

Nitrogen

Answer

Helium

Question 44

Which of the following factors can affect the rate of diffusion of gases across the respiratory membrane?

Accepted Answer

Concentration gradient, surface area, distance

Answer

pH, salinity, viscosity

Answer

Light intensity, magnetic field, sound level

Answer

Temperature, pressure, volume

Question 45

What is the function of surfactant in the lungs?

Accepted Answer

Reduces surface tension, preventing alveoli from collapsing

Answer

Lubricates the airways, easing airflow

Answer

Increases surface tension, promoting alveoli inflation

Question 46

Which of the following is a common respiratory disorder characterized by inflammation and narrowing of the airways?

Accepted Answer

Asthma

Answer

Pneumonia

Answer

Emphysema

Answer

Cystic fibrosis

Question 47

What is the primary way that the body regulates blood pH?

Accepted Answer

Adjusting the rate and depth of breathing

Answer

Dilating or constricting blood vessels

Answer

Altering kidney function

Answer

Secreting hormones

Question 48

What is the primary function of the respiratory center in the medulla oblongata?

Accepted Answer

Regulates the rhythm and depth of breathing

Answer

Monitors blood pH and adjusts breathing accordingly

Answer

Initiates the reflex response of coughing and sneezing

Answer

Controls the production of respiratory secretions

Question 49

What happens to the diaphragm during inhalation?

Accepted Answer

It contracts, which increases the volume of the chest cavity.

Answer

It relaxes, which decreases the volume of the chest cavity.

Answer

It contracts, which decreases the volume of the chest cavity.

Question 50

Which of these would make gas exchange in the lungs happen faster?

Accepted Answer

A larger difference in the amount of oxygen and carbon dioxide between the air and the blood.

Answer

Less blood flowing to the lungs.

Answer

A thicker membrane separating the air and the blood.

Answer

A smaller surface area of the alveoli.

Question 51

People with emphysema have trouble breathing because:

Accepted Answer

The tiny air sacs in their lungs are damaged, which reduces the surface area for gas exchange.

Answer

They produce too much mucus, which blocks their airways.

Answer

Their bronchioles are inflamed, which makes it harder for air to flow in and out.

Question 52

Which of these parts is NOT part of the upper respiratory tract?

Accepted Answer

Bronchioles

Answer

Nasal cavity

Answer

Larynx

Answer

Pharynx

Question 53

Where is the respiratory control center located in the brain?

Accepted Answer

Medulla oblongata

Answer

Cerebral cortex

Answer

Hypothalamus

Answer

Cerebellum

Question 54

Which condition makes it harder for blood to carry oxygen?

Accepted Answer

Anemia

Answer

Emphysema

Answer

Bronchitis

Answer

Asthma

Question 55

Compare the amount of oxygen in the air sacs (alveoli) to the blood entering the lungs. Which has more oxygen?

Accepted Answer

The air in the alveoli has a higher concentration of oxygen than the blood entering the lungs.

Answer

The blood entering the lungs has a higher concentration of oxygen than the air in the alveoli.

Answer

The oxygen concentration is the same in the alveoli and the blood entering the lungs.