_________can only replicate using the host.

Many ________ are symbiotic, but some cause very nasty infections.

_________an not produce their own food and prefer a living organism as a host.

Single celled organisms that move on their own and usually cause intestinal diseases are

_________are bacteria like organisms that only survive in another organism like a flea, tick, or mosquito.

Any white blood cells involved in fighting infection are classified as

A red blood cell's primary function is to transport

Proteins produced by Helper B Cells to identify invading pathogens are

The body system responsible for transporting, filtering pathogens, activating leukocytes, and maintaining immunity is the

Examples of Passive/Non-specific response to infection include

Your skin, mucous membranes, cilia, tears, sweat, urine, and gastric juices are examples of your immune system's

Phagocytosis is part of your body's