Diseases

What are pathogens?

• organisms that cause disease
• organisms that are not living 
• only viruses 
• Organisms that can be seen without a microscope

Disease in which pathogens can be passed from one host to another?

• Transmissible disease

• Transmissible immunity

• Transmissible antigen

• Transmissible antibody

Skin and hair is ....barriers

• mechanical

• chemical

• electrical

• substantial

Stomach acid and mucus is ....barriers

• mechanical

• chemical

• electrical

• substantial

_______________ surround and destroy pathogens.

• viruses

• phagocytes

• bacteria

• vaccines

• none of the above

Which agent causes athletes foot?

• Bacteria
• Fungi
• Parisite
• Virus

Viruses are cells. 

• True 
• False

What do viruses need to reproduce?

• they need genetic material
• They need a host cell
• They can reproduce by themselves
• They need enzymes

How are viruses different from living organisms?

• contain no proteins
• have no DNA or RNA
• killed by antibiotics
• use host cell to reproduce

A mosquito can carry Zika and transfer it to a person. The mosquito is a _______ for the disease. 

• pathogen 
• antibody 
• vector 
• antigen