Question 1

Which of the following best describes the nutritional adaptations of fungi compared to most bacteria?

Accepted Answer

Fungi can grow in high sugar and salt concentrations, at a pH of 5, and in low moisture environments.

Question 2

A patient with AIDS develops pneumonia caused by Pneumocystis. This is an example of which type of mycosis?

Accepted Answer

Opportunistic mycosis

Question 3

Which of the following statements about fungal hyphae is correct?

Accepted Answer

Septate hyphae have divisions between cells, while aseptate hyphae do not.

Question 4

Which of the following is a correct match between a fungal phylum and its reproductive structure?

Accepted Answer

Basidiomycota – basidiospore

Question 5

A fungus that alternates between yeast-like and mold-like forms depending on environmental conditions is described as:

Accepted Answer

Dimorphic

Question 6

Which of the following is NOT a characteristic of Microsporidia?

Accepted Answer

Produce sexual spores called basidiospores

Question 7

Which of the following best describes the life cycle of Plasmodium species (malaria parasite) in humans?

Accepted Answer

Sporozoites undergo schizogony in the liver, producing merozoites that infect red blood cells.

Question 8

Which of the following is a medically important ciliated protozoan that causes dysentery in humans?

Accepted Answer

Balantidium coli

Question 9

Which of the following statements about helminths is TRUE?

Accepted Answer

Helminths may have complex reproductive systems and reduced nervous systems.

Question 10

A patient presents with a tapeworm infection after eating undercooked pork. Which organism is most likely responsible?

Accepted Answer

Taenia solium

Question 11

Which of the following best describes the difference between conidiospores and sporangiospores?

Accepted Answer

Conidiospores are not enclosed in a sac, while sporangiospores are enclosed in a sac.

Question 12

Which of the following is a correct pairing of a protozoan group and its means of motility?

Accepted Answer

Flagellated – flagella

Question 13

Which of the following is a real-world example of a mycotoxin and its effect?

Accepted Answer

Claviceps purpurea produces ergot toxin, which can cause seizures and psychosis.

Question 14

Which of the following is a characteristic of nematodes (roundworms)?

Accepted Answer

They have a complete digestive system.

Question 15

Which of the following best describes the role of arthropods as vectors in disease transmission?

Accepted Answer

Arthropods can transmit pathogens mechanically or biologically, with some serving as the site for sexual reproduction of the microbe.

Question 16

Which of the following economic uses of fungi is correct?

Accepted Answer

Aspergillus terreus is used to produce statins that inhibit cholesterol synthesis.

Question 17

Which of the following is a correct sequence of events in the sexual reproduction of fungi?

Accepted Answer

Plasmogamy → Karyogamy → Meiosis

Question 18

Which of the following protozoan diseases is transmitted by cats and can cause fetal infections?

Accepted Answer

Toxoplasmosis

Question 19

A patient presents with a ring-shaped rash on their skin, itching, and scaling. Which type of fungal infection is most likely?

Accepted Answer

Cutaneous mycosis (dermatophytosis)

Question 20

Which of the following best describes the difference between a definitive and an intermediate host in the context of parasitic life cycles?

Accepted Answer

The definitive host is where sexual reproduction of the parasite occurs, while the intermediate host is where asexual reproduction or development occurs.

The Eukaryotes: Fungi, Algae, Protozoa, and Helminths – Study Notes

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