U4 Bio

All cells and virus particles have molecules on their outer surface called ________

What is the name of white blood cells that have molecules on their surface to fit an antigen?

• memory cells

• lymphocytes

• red blood cells

• fighter white blood cells

What type of antigens can be found on the surface of RBC's when someone has blood type O?

• A

• B

• AB

• none

Which protein do all nucleated body cells use to present antigen?

• CCR7

• MHC I

• MHC II

Which of the following include all the antigen presenting cells?

• dendritic cells

• white blood cells and b cells

• b cells, dendritic cells, and white blood cells

• dendritic cells, macrophages, and b cells

Which pathogen is non-living?

• Virus

• Bacteria

• Fungi

• Parasite/Protist

• They are all alive

Which pathogen is treated with antibiotics?

• virus

• bacteria

• parasite

• fungi

Which pathogen needs a host cell to reproduce?

• virus
• bacteria
• fungus
• parasite

Which best compares bacteria and viruses?

• bacteria are smaller than viruses
• bacteria cause disease, but viruses do not
• bacteria have genetic material, but viruses do not
• bacteria are living organisms, but viruses are not

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

• diseases
• vaccines
• antibodies
• pathogens