Immune System and Infectious Agents: Viruses and Bacteria

Are considered to be living organisms

• Viruses

• Bacteria

• Both viruses and bacteria

Are considered to be non-living organisms

• Viruses

• Bacteria

• Both viruses and bacteria

Bacteria is what type of cell?

• prokaryote

• eukaryote

Medicine that stops the growth and reproduction of bacteria.

• pathogens

• flagella

• antibiotics

prokaryotic means

• no nucleus

• has a nucleus

• no ribosomes

• has a mitochondria

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 is the main purpose of the immune system?

• support the body through bones and muscles

• get rid of waste from the body

• protect the body from pathogens

• move blood through the body