CMA Health Risks & Environmental Impact 2

Question 1

Which mold species is most commonly associated with producing trichothecene mycotoxins linked to severe immune suppression?

Accepted Answer

Stachybotrys chartarum

Answer

Stachybotrys chartarum (black mold) is the primary producer of trichothecene mycotoxins, which can significantly suppress immune function.

Question 2

A child living in a mold-contaminated home develops recurrent sinusitis and fatigue. Which immune response mechanism is most directly triggered by chronic mold spore inhalation?

Accepted Answer

Type I IgE-mediated hypersensitivity

Answer

Mold spores most commonly trigger Type I IgE-mediated hypersensitivity, leading to allergic rhinitis, sinusitis, and asthma.

Question 3

Which environmental condition most significantly increases the rate of mycotoxin production by indoor molds?

Accepted Answer

High humidity above 70% RH combined with organic substrate

Answer

High relative humidity (above 70%) combined with organic substrates such as wood or drywall dramatically accelerates mycotoxin synthesis.

Question 4

Aflatoxin B1, produced by Aspergillus flavus, is classified as a Group 1 carcinogen by the IARC. Which organ is the primary target for aflatoxin-induced cancer?

Accepted Answer

Liver

Answer

Aflatoxin B1 is a potent hepatocarcinogen, primarily causing hepatocellular carcinoma after chronic exposure.

Question 5

Which population group faces the GREATEST risk of invasive fungal infection when exposed to Aspergillus spores in an indoor environment?

Accepted Answer

Immunocompromised individuals such as organ transplant recipients

Answer

Immunocompromised individuals, including transplant recipients on immunosuppressants, are at highest risk for invasive aspergillosis.

(CMA) Certified Mold Assessor Practice Test

(CMA) Certified Mold Assessor Practice Test

CMA Health Risks & Environmental Impact 2