IICRC AMRT 2026 STUDY GUIDE QUESTIONS AND
SOLUTIONS RATED A+
✔✔Define the term Pathogenic? - ✔✔Disease causing
✔✔What is the MC that can support mold growth? - ✔✔16%
✔✔What is the MC that can support wood decaying fungi? - ✔✔20%
✔✔Which federal agency governs indoor air quality? - ✔✔None
✔✔What are the factors that affect mold growth? - ✔✔Temperature
Light
PH
Nutrients
Oxygen
Water
✔✔What is the nutrient that mold grows best on? - ✔✔Cellulose
✔✔What is the definition of ERH? - ✔✔Equilibrium Relative Humidity, at the surface and
comparable to water activity
✔✔What is an example of a Hydrophilic mold? - ✔✔Statchybotrys Chartarum,
Fusarium, and Rhizopus
✔✔What is an example of a Mesophilic mold? - ✔✔Penicillium, Aspergillus,
Cladosporium, Epicoccum, and Alternaria
✔✔What is an example of a Xerophilic mold? - ✔✔Aspergillus and Penicillium
✔✔What are the 4 ways we can be exposed to bioaerosols? - ✔✔Dermal
Inhalation
Ingestion
Injection, cuts, and abrasions
✔✔How do viruses replicate? - ✔✔Inject genetic material (RNA/DNA) turning live host
cell into virus factory
✔✔What is the common route of entry for mold exposure? - ✔✔Inhalation
✔✔What is the common route of entry for exposure to category 3 water? - ✔✔Ingestion
✔✔What does MVOC stand for? - ✔✔Microbial Volatile Organic Compounds
, ✔✔What are MVOCs? - ✔✔Odors produced during fungal germination. Waste by-
product. Irritant to humans.
✔✔Identify 3 other sources for MVOCs, (musty odors)? - ✔✔Bacteria
Re-activated urine
Off-gassing wet materials
✔✔The presence of MVOCs can be an indicator of? - ✔✔Unacceptable indoor air
quality
Active microbial growth
Incomplete remediation
✔✔What is a micron? - ✔✔1/1,000,000 of a meter
✔✔What is the definition of viable? - ✔✔Able to germinate
✔✔What is the definition of non-viable? - ✔✔Not able to germinate
✔✔What is the definition of settled spores? - ✔✔Landed on a surface and not actively
growing
✔✔What is the definition of mycotoxins? - ✔✔Toxic substances produced by fungi,
located in or on the spore cell wall
✔✔Why do molds produce mycotoxins? - ✔✔Provide an advantage against other
microorganisms
✔✔What is the carcinogenic mycotoxin produced by aspergillus? - ✔✔Aflatoxin
✔✔What are the immunizations that water and mold technicians are recommended to
have? - ✔✔Hepatitis A and B, and Tetanus
✔✔What is the time frame for stachybotrys to colonize? - ✔✔7-12 days
✔✔What is the time frame for aspergillus to colonize? - ✔✔24-72 hours
✔✔What is the size of most mold spores found in indoor water damaged environments?
- ✔✔2-20 microns
✔✔What are the molds associated with bird and bat droppings? - ✔✔Histoplasma
Capsulatum
SOLUTIONS RATED A+
✔✔Define the term Pathogenic? - ✔✔Disease causing
✔✔What is the MC that can support mold growth? - ✔✔16%
✔✔What is the MC that can support wood decaying fungi? - ✔✔20%
✔✔Which federal agency governs indoor air quality? - ✔✔None
✔✔What are the factors that affect mold growth? - ✔✔Temperature
Light
PH
Nutrients
Oxygen
Water
✔✔What is the nutrient that mold grows best on? - ✔✔Cellulose
✔✔What is the definition of ERH? - ✔✔Equilibrium Relative Humidity, at the surface and
comparable to water activity
✔✔What is an example of a Hydrophilic mold? - ✔✔Statchybotrys Chartarum,
Fusarium, and Rhizopus
✔✔What is an example of a Mesophilic mold? - ✔✔Penicillium, Aspergillus,
Cladosporium, Epicoccum, and Alternaria
✔✔What is an example of a Xerophilic mold? - ✔✔Aspergillus and Penicillium
✔✔What are the 4 ways we can be exposed to bioaerosols? - ✔✔Dermal
Inhalation
Ingestion
Injection, cuts, and abrasions
✔✔How do viruses replicate? - ✔✔Inject genetic material (RNA/DNA) turning live host
cell into virus factory
✔✔What is the common route of entry for mold exposure? - ✔✔Inhalation
✔✔What is the common route of entry for exposure to category 3 water? - ✔✔Ingestion
✔✔What does MVOC stand for? - ✔✔Microbial Volatile Organic Compounds
, ✔✔What are MVOCs? - ✔✔Odors produced during fungal germination. Waste by-
product. Irritant to humans.
✔✔Identify 3 other sources for MVOCs, (musty odors)? - ✔✔Bacteria
Re-activated urine
Off-gassing wet materials
✔✔The presence of MVOCs can be an indicator of? - ✔✔Unacceptable indoor air
quality
Active microbial growth
Incomplete remediation
✔✔What is a micron? - ✔✔1/1,000,000 of a meter
✔✔What is the definition of viable? - ✔✔Able to germinate
✔✔What is the definition of non-viable? - ✔✔Not able to germinate
✔✔What is the definition of settled spores? - ✔✔Landed on a surface and not actively
growing
✔✔What is the definition of mycotoxins? - ✔✔Toxic substances produced by fungi,
located in or on the spore cell wall
✔✔Why do molds produce mycotoxins? - ✔✔Provide an advantage against other
microorganisms
✔✔What is the carcinogenic mycotoxin produced by aspergillus? - ✔✔Aflatoxin
✔✔What are the immunizations that water and mold technicians are recommended to
have? - ✔✔Hepatitis A and B, and Tetanus
✔✔What is the time frame for stachybotrys to colonize? - ✔✔7-12 days
✔✔What is the time frame for aspergillus to colonize? - ✔✔24-72 hours
✔✔What is the size of most mold spores found in indoor water damaged environments?
- ✔✔2-20 microns
✔✔What are the molds associated with bird and bat droppings? - ✔✔Histoplasma
Capsulatum
