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HCA100 - PREVENTING INFECTION (CHPT.
20) 2026 QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
What is an Infection & How do we Prevent? - correct answer --
Serious safety & health hazard
-"Infection control" to prevent spread of infection in health care
settings (policies & procedures)
^protects all from infection // use proper hand hygiene w/ it
(SUPPORT WORKER MUST FOLLOW EMPLOYER POLICIES)
Who is at Risk for Infection? - correct answer --Older persons,
people with health challenges & disabilities
-Infections spread easily from person to person
****What is a Microorganism? - correct answer --Known as
microbe/germ/bug; small living plant or animal seen only w/
microscope
-Are everywhere; some harmful & can cause infection
(pathogens)
-Nonpathogens = harmless microbe
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What are the Four Types of Microbes? - correct answer --
Bacteria:
one-cell microbe
-Viruses:
invade living cells to grow & multiply
-Fungi: live on organic matter (plants/animals)
-Parasites: organisms deriving nourishment & protection from
other living organisms (hosts)
What are the Requirements for Microbes? - correct answer --
Needs reservoir (host) to live & grow
-Need water & nourishment from reservoir; most need oxygen
-Warm & dark needed; grow best at body temp.
-Destroyed by heat & light
What is Normal Flora? - correct answer --Microbes that live &
grow naturally in certain area of body
-Nonpathogens when in or on natural reservoir; when transmitted
from natural site to another site or host, becomes pathogen
-Some killed when person is ill or taking meds; can increase risk
for developing infection
HCA100 - PREVENTING INFECTION (CHPT.
20) 2026 QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
What is an Infection & How do we Prevent? - correct answer --
Serious safety & health hazard
-"Infection control" to prevent spread of infection in health care
settings (policies & procedures)
^protects all from infection // use proper hand hygiene w/ it
(SUPPORT WORKER MUST FOLLOW EMPLOYER POLICIES)
Who is at Risk for Infection? - correct answer --Older persons,
people with health challenges & disabilities
-Infections spread easily from person to person
****What is a Microorganism? - correct answer --Known as
microbe/germ/bug; small living plant or animal seen only w/
microscope
-Are everywhere; some harmful & can cause infection
(pathogens)
-Nonpathogens = harmless microbe
, Page | 2
What are the Four Types of Microbes? - correct answer --
Bacteria:
one-cell microbe
-Viruses:
invade living cells to grow & multiply
-Fungi: live on organic matter (plants/animals)
-Parasites: organisms deriving nourishment & protection from
other living organisms (hosts)
What are the Requirements for Microbes? - correct answer --
Needs reservoir (host) to live & grow
-Need water & nourishment from reservoir; most need oxygen
-Warm & dark needed; grow best at body temp.
-Destroyed by heat & light
What is Normal Flora? - correct answer --Microbes that live &
grow naturally in certain area of body
-Nonpathogens when in or on natural reservoir; when transmitted
from natural site to another site or host, becomes pathogen
-Some killed when person is ill or taking meds; can increase risk
for developing infection
