Question

1. according to this article, your immune system works much like...

a. the ocean
b. an army
c. an engine in a car
d. a computer

1. where are white blood cells made?

a. in your bones
b. in your thymus
c. in your brain
d. in your heart

1. b and t cells are both...

a. phagocytes
b. bacteria
c. antigens
d. lymphocytes

1. what can you do to keep your immune system strong?

Explanation:

Question 3

The immune system defends the body like an army defends a territory, fighting off invaders (pathogens). The ocean, car engine, or computer don't parallel its defensive, cell - based fighting role.

White blood cells (leukocytes) are produced in the bone marrow (inside bones). The thymus matures T - cells, the brain and heart don't make white blood cells.

B and T cells are types of lymphocytes (a type of white blood cell). Phagocytes are different (e.g., macrophages), they aren't bacteria or antigens (antigens are foreign substances that trigger an immune response).

Answer:

b. an army

Question 4