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Athabasca University
Psychology HLST 200 Final Exam Questions
and Answers Latest 2026
chain of infection Ans: infectious agent, reservoir, portal of exit,
mode of transmission, portal of entry, susceptible host
Infectious agents (pathogens) Ans: The types of microbes that can
cause infections are viruses, bacteria, fungi, protozoa, & helminths
(parasitic worms).
Viruses Ans: Tough, Tiny pathogens that are 10 to 100 times
smaller than bacteria & much smaller than fungi.
Most Common Viruses Ans: filoviruses, hepatitis, herpes,
influenza, noroviruses, papillomaviruses, retroviruses,
rhinoviruses & adrenoviruses, slow viruses
Bacteria Ans: simple one-celled organisms
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bacterial diseases Ans: tuberculosis, tetanus, gonorrhea, scarlet
fever, diphtheria
Fungi Ans: A eukaryotic organism that that come in a variety of
shapes and sizes
Protozoa Ans: single-celled, microscopic animals that release
enzymes and toxins that destroy cells or interfere with their
function
Giardiasis Ans: an intestinal infection caused by microorganisms
in human and animal feces
Helminths (Parasitic worms) Ans: small parasitic worms that
attack specific tissues or organs and compete with the host for
nutrients
Reservoir Ans: a place where any infectious agent can live, grow,
and multiply
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Botulism Ans: a deadly food disease caused by certain bacteria
that grow in improperly canned foods
Listeria Ans: a type of bacterium found in food, soil, vegetation,
water, sewage, and the feces of humans and animals
BSE - Bovine Spongiform Encephalopathy (Mad Cow Disease) Ans: a
disease that affects the central nervous system, especially in cows
Prions Ans: infectious self-reproducing protein structures
vector-borne transmission Ans: when an insect or an animal
transmits disease to a human
Ways that a pathogen can be transmitted Ans: - Direct contact
- indirect contact
- droplet transmission
- airborne transmission
© 2025 All rights reserved
Athabasca University
Psychology HLST 200 Final Exam Questions
and Answers Latest 2026
chain of infection Ans: infectious agent, reservoir, portal of exit,
mode of transmission, portal of entry, susceptible host
Infectious agents (pathogens) Ans: The types of microbes that can
cause infections are viruses, bacteria, fungi, protozoa, & helminths
(parasitic worms).
Viruses Ans: Tough, Tiny pathogens that are 10 to 100 times
smaller than bacteria & much smaller than fungi.
Most Common Viruses Ans: filoviruses, hepatitis, herpes,
influenza, noroviruses, papillomaviruses, retroviruses,
rhinoviruses & adrenoviruses, slow viruses
Bacteria Ans: simple one-celled organisms
© 2025 All rights reserved
, 2 | Page
bacterial diseases Ans: tuberculosis, tetanus, gonorrhea, scarlet
fever, diphtheria
Fungi Ans: A eukaryotic organism that that come in a variety of
shapes and sizes
Protozoa Ans: single-celled, microscopic animals that release
enzymes and toxins that destroy cells or interfere with their
function
Giardiasis Ans: an intestinal infection caused by microorganisms
in human and animal feces
Helminths (Parasitic worms) Ans: small parasitic worms that
attack specific tissues or organs and compete with the host for
nutrients
Reservoir Ans: a place where any infectious agent can live, grow,
and multiply
© 2025 All rights reserved
, 3 | Page
Botulism Ans: a deadly food disease caused by certain bacteria
that grow in improperly canned foods
Listeria Ans: a type of bacterium found in food, soil, vegetation,
water, sewage, and the feces of humans and animals
BSE - Bovine Spongiform Encephalopathy (Mad Cow Disease) Ans: a
disease that affects the central nervous system, especially in cows
Prions Ans: infectious self-reproducing protein structures
vector-borne transmission Ans: when an insect or an animal
transmits disease to a human
Ways that a pathogen can be transmitted Ans: - Direct contact
- indirect contact
- droplet transmission
- airborne transmission
© 2025 All rights reserved
