TCDHA MICROBIOLOGY ACTUAL EXAM
PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
●● How do we control the spread of pathogens in the office?.
Answer: standard precautions
●● Asepsis.
Answer: The absence of infection or infectious materials or agents
●● Cross-Contamination.
Answer: A process that allows transfer of microorganisms between
persons and environmental surfaces
●● Universal Precautions.
Answer: consider all clients as being infected with blood borne
pathogens and therefore applying infection control procedures to the
care of all clients
●● direct contact.
Answer: Contact with microorganisms at the source as in the clients
mouth
,●● indirect contact.
Answer: Contact with items contaminated with a clients microorganisms
●● droplet infection.
Answer: Contact with sprays, splashes, aerosols or splatter containing
microorganisms
●● airborne infection.
Answer: smaller particles, can remain airborne for hours
●● Sterilization.
Answer: destroy/kill all mo's in a material or on an object
●● Disinfection.
Answer: process that destroys mo's, not spores & viruses
●● Bactericidal.
Answer: agent that kills bacteria
●● Bacteriostatic.
Answer: stops growth of bacteria.
, ●● Pasteurization.
Answer: heat process employed to reduce # of bacteria and destroy
pathogens
●● Lyophilization.
Answer: a process of preserving microbes from a substance by removing
the water, rapidly freezing, then drying it by using a vacuum pump
●● SPORES.
Answer: Bacteria that develop a defense mechanism against death
●● three common types of sterilization.
Answer: heat, gas, liquid
●● Thermophiles.
Answer: heat loving bacteria
●● Psychrophiles.
Answer: cold loving bacteria
●● Obligate Aerobes.
Answer: grow in presence of oxygen
PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
●● How do we control the spread of pathogens in the office?.
Answer: standard precautions
●● Asepsis.
Answer: The absence of infection or infectious materials or agents
●● Cross-Contamination.
Answer: A process that allows transfer of microorganisms between
persons and environmental surfaces
●● Universal Precautions.
Answer: consider all clients as being infected with blood borne
pathogens and therefore applying infection control procedures to the
care of all clients
●● direct contact.
Answer: Contact with microorganisms at the source as in the clients
mouth
,●● indirect contact.
Answer: Contact with items contaminated with a clients microorganisms
●● droplet infection.
Answer: Contact with sprays, splashes, aerosols or splatter containing
microorganisms
●● airborne infection.
Answer: smaller particles, can remain airborne for hours
●● Sterilization.
Answer: destroy/kill all mo's in a material or on an object
●● Disinfection.
Answer: process that destroys mo's, not spores & viruses
●● Bactericidal.
Answer: agent that kills bacteria
●● Bacteriostatic.
Answer: stops growth of bacteria.
, ●● Pasteurization.
Answer: heat process employed to reduce # of bacteria and destroy
pathogens
●● Lyophilization.
Answer: a process of preserving microbes from a substance by removing
the water, rapidly freezing, then drying it by using a vacuum pump
●● SPORES.
Answer: Bacteria that develop a defense mechanism against death
●● three common types of sterilization.
Answer: heat, gas, liquid
●● Thermophiles.
Answer: heat loving bacteria
●● Psychrophiles.
Answer: cold loving bacteria
●● Obligate Aerobes.
Answer: grow in presence of oxygen
