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AP Environmental Science
Unit 8: Aquatic and Terrestrial Pollution
8.15 Pathogens and Infectious Diseases
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Pathogens are microorganisms that can cause infectious
diseases
What type of pathogen causes strep throat?
Bacteria
Pathogens
can spread through air, water, and direct contact.
Order the following transmission routes of pathogens from most direct to least direct:
1️⃣ Direct Contact
2️⃣ Airborne
3️⃣ Foodborne
4️⃣ Vectors
5️⃣ Waterborne
Match the transmission route with an example disease:
Airborne ↔️ Influenza
Waterborne ↔️ Cholera
Direct Contact ↔️ HIV
Vectors ↔️ Malaria
Viruses are single-celled organisms that can replicate independently.
False
Which type of pathogen causes malaria?
Protozoa
Parasites live in or on a
host
All pathogens require a host to
replicate
.
Match the type of pathogen with its description:
Bacteria ↔️ Single-celled microorganisms
Viruses ↔️ Non-cellular entities
Fungi ↔️ Multi-cellular organisms
Fungi are multi-cellular organisms causing diseases like Athlete's foot and
ringworm
Protozoa are single-celled eukaryotic organisms causing diseases like Malaria and
dysentery
Parasites are organisms that live in or on a
host
, causing diseases like Tapeworms and hookworms
Bacteria are single-celled microorganisms that can cause diseases like Strep throat and
E. coli
infections.
Viruses are non-cellular entities that require a host to
replicate
What type of pathogen causes Strep throat?
Bacteria
What is an example of a viral disease?
Influenza
Fungi are multi-cellular organisms that can cause diseases like Athlete's foot and
ringworm
.
Protozoa are single-celled eukaryotic organisms that cause diseases like Malaria and
dysentery
Match the type of pathogen with its description:
Bacteria ↔️ Single-celled microorganisms
Viruses ↔️ Non-cellular entities requiring a host
Fungi ↔️ Multi-cellular organisms
What is the causative agent of Malaria?
Protozoa
Viruses require a host to replicate because they lack their own
cellular
machinery.
Bacteria are single-celled microorganisms that can cause diseases like Strep throat and
E. coli
Fungi are multi-cellular organisms that can cause diseases like Athlete's foot and
ringworm
Viruses are non-cellular entities that can cause diseases like Influenza and
HIV
.
Bacteria are single-celled microorganisms that can cause diseases like Strep throat and
E. coli
What is an example of a disease caused by protozoa?
Malaria
Bacteria can cause diseases like Strep throat and
E. coli
infections.
Protozoa are single-celled eukaryotic organisms that can cause diseases like Malaria and
dysentery
What type of organism causes Athlete's foot?
Fungi
Bacteria are single-celled microorganisms that can cause diseases like Strep throat and
E. coli
infections.
Fungi are multi-cellular organisms that can cause diseases like Athlete's foot and
ringworm
Match the pathogen with an example of a disease it causes:
Bacteria ↔️ Strep throat
Viruses ↔️ Influenza
Fungi ↔️ Athlete's foot
Protozoa ↔️ Malaria
Order the common transmission mechanisms of pathogens:
1️⃣ Airborne
2️⃣ Waterborne
3️⃣ Direct contact
4️⃣ Vectors
5️⃣ Foodborne
What is an example of a disease transmitted through airborne transmission?
Influenza
Waterborne transmission occurs when
pathogens
are found in contaminated water.
Direct contact is a transmission mechanism that involves physical contact with an infected individual or
surface
What is an example of a disease transmitted through vectors?
Malaria
Foodborne
transmission
occurs when contaminated food is consumed.
Match the transmission route with an example of a disease:
Airborne ↔️ Influenza
Waterborne ↔️ Cholera
Direct contact ↔️ HIV
Foodborne ↔️ Salmonella
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