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

What is the difference between molds and slime molds?

a) Slime molds are aquatic molds

b) Molds are fungi, while slime molds are not

c) There is no difference

b). Molds are multicellular, filamentous fungi, while slime molds belong to a more primitive group of organisms called the Protista, which form unicellular or colonial forms such as amoebas and primitive algae.

(left) slime mold (right) mold (Photo source: D. Sadikovic, Mold Busters)

b). Molds are multicellular, filamentous fungi, while slime molds belong to a more primitive group of organisms called the Protista, which form unicellular or colonial forms such as amoebas and primitive algae.

(left) slime mold (right) mold (Photo source: D. Sadikovic, Mold Busters)

2 / 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.

3 / 10

Molds are genetically closest to:

a) Plants

b) Humans

c) Bacteria

b). Humans because the latest molecular studies have placed the kingdom of Fungi (where molds belong) and the kingdom of Animalia (where humans belong) into a superkingdom named Opisthokonta

The Tree of Life of the planet's organisms. (Photo source: Micallen0713, Wikimedia).

b). Humans because the latest molecular studies have placed the kingdom of Fungi (where molds belong) and the kingdom of Animalia (where humans belong) into a superkingdom named Opisthokonta

The Tree of Life of the planet's organisms. (Photo source: Micallen0713, Wikimedia).

4 / 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)

5 / 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.

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

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

a) 8%

b) 50%

c) 60%

The correct answer is 8%, and the most common types (in two-thirds of cases) belong to the Penicillium/Aspergillus group.

The correct answer is 8%, and the most common types (in two-thirds of cases) belong to the Penicillium/Aspergillus group.

8 / 10

The blue-green veins in cheeses such as Gorgonzola and Roquefort originate from

a) Molds

b) Bacteria

c) Food colouring

a). The blue veins are the result of Penicillium molds forming colonies in the presence of air. This cheese, even though technically spoiled, is considered safe and a delicacy.

a). The blue veins are the result of Penicillium molds forming colonies in the presence of air. This cheese, even though technically spoiled, is considered safe and a delicacy.

9 / 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)

10 / 10

What is the molds function in an ecosystem?

a) To infect weaker organisms, thus strengthening a population

b) To recycle organic matter

c) To make symbiosis with plants and help them grow

b) To recycle organic matter through decomposition and mineralization. In fact, everything lignin-containing can only be dissolved by saprophytic fungi, without which life on this planet wouldn’t be possible due to sheer amounts of debris formed by undecomposed plant material.

Nutrient cycle (Photo source: Jakob Assmann)

b) To recycle organic matter through decomposition and mineralization. In fact, everything lignin-containing can only be dissolved by saprophytic fungi, without which life on this planet wouldn’t be possible due to sheer amounts of debris formed by undecomposed plant material.

Nutrient cycle (Photo source: Jakob Assmann)

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