Mold Quiz

Take this quiz about mold to learn more about the dangers of mold and how you can prevent it.

Mold Busters Quiz

1 / 10

Evolutionary speaking, which group was the first to developed weapons against pathogenic molds?

a) Humans

b) Ants

c) Bees

b) Ants. For more than 50 million years, leaf-cutter ants have been cultivating certain fungi which form mushroom-like structures to feed their larvae. This food source is constantly being attacked by molds. In order to protect their crops, these ants have learned to additionally cultivate certain types of microorganisms, which have antibiotic properties against the pathogenic mold.

Atta columbica queen with workers on fungal substrate (Photo source: Christian R. Linder, Wikimedia)

b) Ants. For more than 50 million years, leaf-cutter ants have been cultivating certain fungi which form mushroom-like structures to feed their larvae. This food source is constantly being attacked by molds. In order to protect their crops, these ants have learned to additionally cultivate certain types of microorganisms, which have antibiotic properties against the pathogenic mold.

Atta columbica queen with workers on fungal substrate (Photo source: Christian R. Linder, Wikimedia)

2 / 10

The first antibiotic was extracted from:

a) A mushroom

b) A mold

c) A rare plant

b). Penicillin, the first antibiotic, was isolated and discovered in 1928 by Dr. Alexander Fleming from Penicillium mold.

b). Penicillin, the first antibiotic, was isolated and discovered in 1928 by Dr. Alexander Fleming from Penicillium mold.

3 / 10

What is the difference between yeasts and molds?

a) Yeasts are larger than molds

b) Yeasts reproduce by water, while molds spread through air

c) Number of cells

c) Number of cells. Molds are multicellular, filamentous organisms, while yeasts are aggregations of single-cell organisms which aggregate and act as an individual. Interestingly, some fungi can revert from a yeast form to a filamentous form, depending on certain ecological conditions.

Fungi under microscope;(left) Yeast (right) Mould (Photo source: Bob Blaylock, Wikimedia)

c) Number of cells. Molds are multicellular, filamentous organisms, while yeasts are aggregations of single-cell organisms which aggregate and act as an individual. Interestingly, some fungi can revert from a yeast form to a filamentous form, depending on certain ecological conditions.

Fungi under microscope;(left) Yeast (right) Mould (Photo source: Bob Blaylock, Wikimedia)

4 / 10

What are molds?

a) Fungi

b) Bacteria

c) Viruses

a). Molds are multicellular, filamentous organisms that belong to the kingdom of Fungi.

a). Molds are multicellular, filamentous organisms that belong to the kingdom of Fungi.

5 / 10

What causes green mouldy bread?

a) Aspergillus fungi

b) Algae

c) Penicillium fungi

c). Penicillium fungi are the most frequent cause of the green mold spots on old bread. Mouldy bread is not safe to eat as some green mould species can produce mycotoxins.

(Photo source: Henry Mühlpfordt, Wikimedia)

c). Penicillium fungi are the most frequent cause of the green mold spots on old bread. Mouldy bread is not safe to eat as some green mould species can produce mycotoxins.

(Photo source: Henry Mühlpfordt, Wikimedia)

6 / 10

The most dangerous way you can mold exposure is by:

a) Skin contact

b) Ingestion

c) Inhalation

d) All of the above

d) All of the above. Furthermore, prolonged exposure to mold can manifest in symptoms ranging from rashes, allergies and flu-like symptoms to neurological damage and even death.

d) All of the above. Furthermore, prolonged exposure to mold can manifest in symptoms ranging from rashes, allergies and flu-like symptoms to neurological damage and even death.

7 / 10

What causes black mouldy bread?

a) Rhizopus fungi

b) Ants

c) Penicillium fungi

a). Rhizopus fungi create black mold spots on old bread. It is never safe to eat mouldy bread as ingesting black mold can cause nausea, vomiting, and allergic reactions.

a). Rhizopus fungi create black mold spots on old bread. It is never safe to eat mouldy bread as ingesting black mold can cause nausea, vomiting, and allergic reactions.

8 / 10

How did the Penicillium mold got their name?

a) Because they look like pencils

b) Because of their smell

c) Because they look like paintbrushes

c) Because they look like paintbrushes – The entire genus Penicillium got its name because their spore-bearing structures look like paintbrushes, which are called “penicilli” in Latin.

Penicillium sp. conidiophore (Photo source: AJC1, Wikimedia).

c) Because they look like paintbrushes – The entire genus Penicillium got its name because their spore-bearing structures look like paintbrushes, which are called “penicilli” in Latin.

Penicillium sp. conidiophore (Photo source: AJC1, Wikimedia).

9 / 10

What is the main reason of mold infestation throughout most households in the world?

a) Unhygienic living conditions

b) Type of building material

c) Excess moisture

c). Moisture is the crucial ingredient for mold to thrive. Generally, the most common reasons for indoor mold spread are plumbing and roof leaks, wet basements, bad yard drainage, and high humidity.

c). Moisture is the crucial ingredient for mold to thrive. Generally, the most common reasons for indoor mold spread are plumbing and roof leaks, wet basements, bad yard drainage, and high humidity.

10 / 10

According to some statistical overviews, what percentage Canadian homes have mold-free bathrooms?

a) 13%

b) 26%

c) 54%

a) 13%, and the most common types (in more than half cases) are from the Penicillium/Aspergillus group.

a) 13%, and the most common types (in more than half cases) are from the Penicillium/Aspergillus group.

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