EmSAT EmSAT Biology 5

Question 1

What is the function of white blood cells?

Accepted Answer

Defending the body against pathogens and infection

Answer

Transporting oxygen

Answer

Producing hormones

Answer

Clotting blood at wounds

Question 2

What is an antigen?

Accepted Answer

A substance that triggers an immune response

Answer

A protein produced by the immune system

Answer

A type of white blood cell

Answer

A drug that fights infection

Question 3

What is the role of antibodies?

Accepted Answer

To identify and neutralize specific antigens

Answer

To carry oxygen

Answer

To produce more white blood cells

Answer

To regulate body temperature

Question 4

How does vaccination work?

Accepted Answer

It introduces a weakened/inactivated pathogen to stimulate immune memory without causing disease

Answer

It kills all bacteria in the body

Answer

It suppresses the immune system

Answer

It directly kills viruses

Question 5

What is the difference between active and passive immunity?

Accepted Answer

Active immunity involves producing your own antibodies; passive immunity involves receiving ready-made antibodies

Answer

Active immunity comes from vaccines only; passive immunity comes from antibiotics

Answer

They are the same thing

Answer

Active immunity is temporary; passive is permanent

Question 6

What is a pathogen?

Accepted Answer

A microorganism that causes disease

Answer

A beneficial bacterium

Answer

A type of white blood cell

Answer

A hormone produced during infection