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

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).

2 / 10

Chemical structure of cellular walls of mold fungi is similar to:

a) Plants

b) Lobsters

c) Armadillos

b) Lobsters, because the shell of arthropods (crustations, insects, spiders, and such animals) and the cell walls of fungi (molds) are made of chitin, a structural polysaccharide (sugar) molecule.

The cell wall structure of Fungi (Photo source: Maya and Rike, Wikimedia)

b) Lobsters, because the shell of arthropods (crustations, insects, spiders, and such animals) and the cell walls of fungi (molds) are made of chitin, a structural polysaccharide (sugar) molecule.

The cell wall structure of Fungi (Photo source: Maya and Rike, Wikimedia)

3 / 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.

4 / 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)

5 / 10

Certain molds can use one of the following to stimulate their growth:

a) Certain sound frequencies

b) Radiation

c) Fear hormones

b). Radiation. Some melanin-producing molds, such as Cladosporium sphaerospermum, can use radiation to increase the rate of their metabolism, eat more and grow several times faster. Interestingly, experiments conducted on the International Space Station showed the potential of these molds to be used for radiation shielding during long space flights.

Melanin-producing Cladosporium sphaerospermum colony (Photo source: Medmyco, Wikimedia)

b). Radiation. Some melanin-producing molds, such as Cladosporium sphaerospermum, can use radiation to increase the rate of their metabolism, eat more and grow several times faster. Interestingly, experiments conducted on the International Space Station showed the potential of these molds to be used for radiation shielding during long space flights.

Melanin-producing Cladosporium sphaerospermum colony (Photo source: Medmyco, Wikimedia)

6 / 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.

7 / 10

Why did the Italian botanist Pier Antonio Micheli give the genus Aspergillum its name?

a) Because fungi from the genus Aspergillum look like asparagus

b) Because fungi from the genus Aspergillum were discovered in the Asperg town, Germany

c) Because fungi from the genus Aspergillum look like the Christian Holy Water sprinkler device

a) they look like the Christian Holy Water sprinkler device, called aspergillum.

(up) Aspergillum (Photo Source: Pearson Scott Foresman, Wikipedia); (down) Aspergillus niger conidiophore (Photo source: Kathie Hodge, Flickr).

a) they look like the Christian Holy Water sprinkler device, called aspergillum.

(up) Aspergillum (Photo Source: Pearson Scott Foresman, Wikipedia); (down) Aspergillus niger conidiophore (Photo source: Kathie Hodge, Flickr).

8 / 10

What is the most common toxic mold types found in Canadian and U.S. homes?

a) Penicillium/Aspergillus group

b) Chaetomium

c) Stachybotrys

d) Alternaria

a) Penicillium/Aspergillus mold are the most common mold type in 38% of the investigated households.

a) Penicillium/Aspergillus mold are the most common mold type in 38% of the investigated households.

9 / 10

What percentage of asthma episodes may be triggered by the presence of household of mold in the U.S.?

a) 16%

b) 21%

c) 5%

b) 21%, which translates to approximately 4.6 million people suffering from mold-related respiratory problems only in the United States.

b) 21%, which translates to approximately 4.6 million people suffering from mold-related respiratory problems only in the United States.

10 / 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.

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