What is a pathogen?

Which body defence is a chemical barrier?

The diagram below shows a mosquito feeding on human blood.

State the name of the barrier which is broken by the mosquito

Proteins called _______ can attach to the antigen and make it useless.

The diagram shows a lymphocyte. What is the arrow pointing to on the surface of the lymphocyte?

Antibody structure is commonly

A white blood cell that destroys pathogens by engulfing them and breaking them down is called:

Which of the following is/are true of antibody production?

You acquire ________ when your own immune system produces antibodies against a pathogen in your body.

Babies acquire __________ immunity to some diseases before birth and are protected during the first six months after they are born.

__________ diseases can be treated with specific medications.

Immunization, also known as __________, is the process by which harmless antigens are introduced into a person's body to produce active immunity.

____________ are made naturally by bacteria and fungi, as well as artificially by human beings.

While discussing a particular disease, the teacher described the following symptoms found in a patient: fluid filled alveoli, fever, chills, cough, headache, lips and finger nails turning bluish. Which one of the following diseases should the student chose?

Almost everyone have suffered from Common cold once or many times till date. From the following statement find the incorrect one in this context.

Measles, chicken pox, influenza is an examples of infectious diseases, yes or no.

Which of the following is disease that is not infectious?

Infectious disease are spread by (i)__________ , transmitted by infected person called (ii) ______________.

Based on the image, what is the true reason people need to wear that type of face mask.

"Cholera, Typhoid, Amoebic dysentery"

is the common disease that transmitted through _____

The following skin disease can be prevented by...

What is the meaning of antigen?

What is the correct path through the circulatory system which describes the passage of a blood clot originating in the left leg?

What divides the left side of the heart from the left side?

At the instant following the second heart sound, which heart valves are open?

Rank the following blood vessels in order of their average pressure, from highest to lowest: artery, vein, arteriole, venule, aorta, capillary.

What vessels carry deoxygenated blood away from the heart?

How can the circulatory system promote heat retention/conservation, such as on a cold day?

A tiny blood vessel that allows for exchange between the blood and cells in the tissues in the body is called a

These are veins that transfer oxygenated blood from the lungs to the heart.

What comes next?

Mouth > Esophagus > Stomach > __________

This is the first part of the digestive system. It contains stratified squamous epithelium.

Food is pushed through your __________ and into your stomach with a series of muscle contractions.​

__________ is important because your body needs nutrients from food and drink to work properly​.

__________ are mainly sugars and starches that the body breaks down into glucose.

These are made up of hundreds or thousands of smaller units called amino acids.

During __________, the diaphragm contracts and the rib cage rises up.