Infectious Agents and the Immune System

Are considered to be living organisms

• Viruses

• Bacteria

• Both viruses and bacteria

• Neither viruses or bacteria

Medicine that stops the growth and reproduction of bacteria.

• pathogens

• flagella

• antibiotics

• antiviral

Which is the most effective defense against the chicken pox virus?

• antibiotics

• diet

• exercise

• vaccine

Which would most likely prevent a cold virus from spreading in a classroom?

• tissue at a teacher's desk

• students wash hands regularly with soap

• students shake hands regularly with each other

• students wipe desks with dry paper towels

Like all other body systems, the immune system helps the body maintain homeostasis. Which statement best describes how the immune system does this?

• it protects other organs and tissues from infection and disease

• it breaks down food to provide cells with nutrients

• it gathers information through the senses and controls all other body systems

• it transports oxygen and carbon dioxide

What do scientists call bacteria and viruses that can make people sick?

• diseases

• vaccines

• antibodies

• pathogens

What do viruses need to reproduce?

• they need genetic material

• They need a host cell

• They need bacteria

• They need insulin

A disease that is harmful to the body and is contagious is called....

• Non-Infectious

• Infectious

Strep Throat, Pneumonia and Staph Infection are all examples of diseases caused by-

• Viruses

• Bacteria

• parasites

• Protozoa

Which type of infectious agents do antibiotics work to defeat?

• Bacteria

• Viruses

• Protozoa

• Helminths