Pathogens and Disease

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Which of the following is NOT a major category of pathogens?

Viruses

Protozoa (correct)

Fungi

Bacteria

What is the main way that pathogens are spread from host to host?

Through airborne particles (correct)

Through food consumption

Through bodily fluids

Through skin contact

How do viruses replicate within the body?

By taking nutrients from host cells

By causing tissue death

By invading host cells (correct)

By releasing toxins

What makes fungi harder to kill compared to other pathogens?

Their thick cell wall Signup and view all the answers

What is the main way that parasites cause illness in a host?

By feeding from the host Signup and view all the answers

Which pathogen causes strep throat?

Streptococcus pyogenes Signup and view all the answers

Which pathogen causes athlete's foot?

Trichophyton rubrum Signup and view all the answers

What are antigens?

Substances on the surface of cells, viruses, fungi, or bacteria Signup and view all the answers

What are antibodies?

Y-shaped proteins made by the immune system Signup and view all the answers

How does the immune system "remember" different pathogens?

By producing antibodies Signup and view all the answers

Match the following pathogens with their type:

Hepatitis = Virus Escherichia coli = Bacteria Trichophyton rubrum = Fungus Enterobius vermicularis = Parasite Signup and view all the answers

Match the following pathogens with the diseases they cause:

Hepatitis = Liver inflammation Staphylococcus aureus = Skin infections such as abscesses and cellulitis Streptococcus pyogenes = Strep throat, infection of throat and tonsils Trichophyton rubrum = Athlete's foot, an itchy foot rash Signup and view all the answers

Match the following terms with their descriptions:

Antigen = Substances that trigger the body to fight them Antibody = Y - shaped proteins made by the immune system's B-cells when it detects antigens Signup and view all the answers

Match the following antigens with the antibodies they fit with:

Poliovirus antigen = Antibody made for the poliovirus Signup and view all the answers

Match the following pathogens with their descriptions:

Viruses = Not made of cells and use host cell to copy themselves Bacteria = Single-celled microorganisms that can cause infections by releasing toxins Fungi = Cells contain a nucleus and a thick cell wall, can cause disease by causing tissue death or taking nutrients from host cells Parasites = Organisms that live in or on a host and feed from them, causing weakness and illness Signup and view all the answers

Match the following pathogens with the ways they cause disease:

Viruses = Invade host cells within the body and use the host cell to copy themselves, damaging or destroying the infected cells Bacteria = Cause disease by releasing toxins that make us sick or cause tissues to die Fungi = Cause disease by causing tissue death or by taking nutrients from host cells Parasites = Live in or on a host and feed from them, causing weakness and illness Signup and view all the answers