Question 1

What are pathogens?

Accepted Answer

Microorganisms that can cause disease

Answer

Nutrients for the body

Answer

Hormones that regulate metabolism

Answer

Cells that repair tissues

Question 2

What are lymphocytes and where are they produced?

Accepted Answer

White blood cells produced in bone marrow

Answer

Red blood cells made in the liver

Answer

Hormones produced in the pancreas

Answer

Platelets formed in the spleen

Question 3

What is the main function of tonsils?

Accepted Answer

Trap and filter pathogens that enter through the mouth and nose

Answer

Produce hormones

Answer

Store fat

Answer

Help in digestion

Question 4

What is the main job of the immune system?

Accepted Answer

To attack organisms and substances that invade body systems.

Answer

To break down waste

Answer

To regulate temperature

Answer

To circulate blood

Question 5

What do lymph nodes filter out from the lymph fluid?

Accepted Answer

Microorganisms and foreign materials

Answer

Hormones

Answer

Nutrients

Answer

Oxygen

Question 6

Where does the lymphatic system return lymph fluid?

Accepted Answer

To the blood

Answer

To the kidneys

Answer

To the lungs

Answer

To muscle tissue

Question 7

What is the primary function of the spleen?

Accepted Answer

Filters blood and breaks down damaged red blood cells

Answer

Produces insulin

Answer

Stores bile

Answer

Regulates heart rate

Question 8

Which bodily substances help to keep pathogens out?

Accepted Answer

skin, tears, and saliva

Answer

blood, muscles, and nerves

Answer

bones, teeth, and skin

Answer

saliva, sweat, and fat

Question 9

What do antibodies do?

Accepted Answer

Bind to pathogens and help destroy them.

Answer

Regulate blood pressure.

Answer

Generate energy in cells.

Answer

Transport nutrients in the blood.

Question 10

How do bacteria reproduce?

Accepted Answer

By copying their DNA and splitting in half

Answer

By budding off a new cell

Answer

By creating spores

Answer

By budding from a parent

Question 11

What is a unique characteristic of viruses?

Accepted Answer

They need a host cell to reproduce

Answer

They can live independently

Answer

They can reproduce without any help

Answer

They are made of living cells

Question 12

What is one way bacteria can be helpful to humans?

Accepted Answer

They help digest food

Answer

They decompose plastics

Answer

They produce toxins

Answer

They cause diseases

Question 13

What condition can result from consuming undercooked food?

Accepted Answer

Salmonella infection

Answer

Stomach ache

Answer

Flu

Answer

Common cold

Question 14

What is the role of antibiotics?

Accepted Answer

To kill bacteria by breaking down their cell walls

Answer

To replace nutrients in the body

Answer

To strengthen immune cells

Answer

To enhance viral reproduction

Question 15

What is found inside a virus?

Accepted Answer

DNA

Answer

RNA

Answer

Proteins

Answer

Lipids

Question 16

What do viruses need to reproduce?

Accepted Answer

A host cell

Answer

Nutrients

Answer

Bacteria

Answer

Sunlight

Question 17

How do vaccines help the immune system?

Accepted Answer

They prepare the immune system to fight infections

Answer

They boost muscle strength

Answer

They provide nutrients

Answer

They kill all viruses

Question 18

What is the primary function of the respiratory system?

Accepted Answer

To exchange oxygen and carbon dioxide

Answer

To sense smell

Answer

To circulate blood

Answer

To digest food

Question 19

Which organ in the respiratory system is responsible for gas exchange?

Accepted Answer

Alveoli

Answer

Esophagus

Answer

Trachea

Answer

Bronchi

Question 20

What is the role of cilia in the respiratory system?

Accepted Answer

To trap and move particles out of the airways

Answer

To help with digestion

Answer

To exchange gases

Answer

To produce sound

Question 21

What is the main purpose of the mucus in the respiratory system?

Accepted Answer

To trap dust and pathogens

Answer

To help with oxygen exchange

Answer

To cool the air

Answer

To create sound

Question 22

What is the function of the nasal cavity?

Accepted Answer

To filter, warm, and moisten incoming air

Answer

To create vocal sounds

Answer

To exchange gases

Answer

To carry oxygen to the bloodstream

Question 23

What gas do the blood vessels in the alveoli take from the lungs to the body?

Accepted Answer

oxygen

Answer

nitrogen

Answer

carbon dioxide

Answer

helium

Question 24

How many bronchi does the trachea divide into?

Accepted Answer

2

Answer

4

Answer

3

Answer

1

Question 25

What are the small air sacs in the lungs called?

Accepted Answer

Alveoli

Answer

Bronchioles

Answer

Diaphragm

Answer

Trachea

Question 26

What is the protective flap that covers the windpipe during swallowing?

Accepted Answer

Epiglottis

Answer

Larynx

Answer

Trachea

Answer

Pharynx

Question 27

What structure connects the throat to the lungs?

Accepted Answer

Trachea

Answer

Esophagus

Answer

Diaphragm

Answer

Pharynx

Question 28

What is the name of the muscle that help you breathe?

Accepted Answer

Diaphragm

Answer

Stomach

Answer

Heart

Answer

Lungs

Question 29

Which gas do humans primarily exhale?

Accepted Answer

Carbon dioxide

Answer

Nitrogen

Answer

Hydrogen

Answer

Oxygen

Question 30

What is the difference between respiration and breathing?

Accepted Answer

Respiration is a chemical process to make energy in cells&#44;  breathing is inhaling and exhaling air.

Answer

Breathing is the process of digestion, while respiration is for breathing.

Answer

Respiration occurs only in animals, while breathing occurs in plants.

Answer

Breathing does not involve oxygen, while respiration does.

Question 31

Which of the following is a lung condition?

Accepted Answer

asthma

Answer

diabetes

Answer

hypertension

Answer

arthritis

Question 32

What is the smallest airway in the lungs after the bronchi that leads to the alveoli?

Accepted Answer

bronchioles

Answer

bronchi

Answer

alveolar ducts

Answer

trachea

Question 33

What is the primary function of white blood cells in the immune system?

Accepted Answer

To fight infection

Answer

To digest food

Answer

To transport oxygen

Answer

To produce hormones

Question 34

What is cholera?

Accepted Answer

A bacterial infection that causes severe diarrhea

Answer

A viral infection that causes a cold

Answer

A type of food poisoning

Answer

A skin disease caused by bacteria

Question 35

What is malaria?

Accepted Answer

A disease caused by parasites transmitted through mosquito bites

Answer

A virus that causes the flu

Answer

A type of plant

Answer

A bacterial infection

Question 36

What is athlete's foot?

Accepted Answer

A fungal infection that affects the skin on the feet

Answer

A viral infection that affects muscles

Answer

A bacterial infection that causes fever

Answer

A type of allergic reaction to shoes

Question 37

What is one effective way to prevent the spread of infection?

Accepted Answer

Washing your hands regularly

Answer

Staying in crowded places

Answer

Sneezing without covering your mouth

Answer

Sharing personal items

Question 38

What did Alexander Fleming observe that led to the discovery of penicillin?

Accepted Answer

Mold killing bacteria in his Petri dish

Answer

A new type of vaccine

Answer

Bacteria multiplying rapidly

Answer

Infection spreading in patients

Question 39

Which system works closely with the immune system to remove pathogens from the body?

Accepted Answer

Lymphatic system

Answer

Nervous system

Answer

Circulatory system

Answer

Digestive system

Question 40

Why is it important to update the flu vaccine each year?

Accepted Answer

Because the flu virus changes and new variants appear frequently.

Answer

Because vaccines are only effective for one season.

Answer

To ensure everyone gets a different vaccine each year.

Answer

To make the vaccine more expensive.

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