Question 1

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

Accepted Answer

Fungi are chemoheterotrophs that can grow in high sugar and salt concentrations and at low moisture.

Question 2

A patient with a compromised immune system develops a fungal infection localized to the hair shafts. Which type of mycosis is this?

Accepted Answer

Superficial mycosis

Question 3

Which of the following statements about fungal hyphae is correct?

Accepted Answer

Vegetative hyphae are involved in nutrient acquisition, while aerial hyphae are involved in reproduction.

Question 4

Which of the following is a distinguishing feature of Microsporidia compared to other fungi?

Accepted Answer

They are obligate intracellular parasites and lack mitochondria.

Question 5

Which of the following pairs is correctly matched regarding fungal reproduction?

Accepted Answer

Ascomycota – asexual spore: conidiospore

Question 6

A food scientist is interested in using a fungal enzyme to break down cellulose in biofuel production. Which fungus is most relevant for this application?

Accepted Answer

Trichoderma

Question 7

Which of the following best explains why brown algae (kelp) are important in the food industry?

Accepted Answer

They produce algin, a thickener used in foods.

Question 8

Which of the following algae is most likely to cause neurological disease due to toxin production?

Accepted Answer

Diatoms

Question 9

A patient presents with symptoms of malaria. Which of the following best describes the life cycle of the causative agent, Plasmodium?

Accepted Answer

It reproduces sexually in the Anopheles mosquito and asexually in the human host.

Question 10

Which of the following is a characteristic of nematodes that distinguishes them from platyhelminths?

Accepted Answer

Nematodes have a complete digestive system.

Question 11

Which of the following is true regarding the mutualistic relationship in lichens?

Accepted Answer

The alga produces and secretes carbohydrates, while the fungus provides holdfast and protection.

Question 12

Which of the following protozoan groups is characterized by movement using pseudopods?

Accepted Answer

Amebae

Question 13

Which of the following is a medically important protozoan that lacks a cyst stage and is transmitted sexually?

Accepted Answer

Trichomonas vaginalis

Question 14

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

Accepted Answer

Arthropods carry pathogenic microorganisms and may transmit them mechanically or biologically.

Question 15

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

Accepted Answer

Plasmogamy → Karyogamy → Meiosis

Question 16

A scientist isolates a unicellular, nonfilamentous fungus that divides unevenly. What is the most likely identity of this organism?

Accepted Answer

Budding yeast

Question 17

Which of the following is a real-world example of an oomycete causing significant agricultural damage?

Accepted Answer

Phytophthora infestans causing the Irish potato blight

Question 18

Which of the following is a distinguishing feature of basidiospores compared to other fungal spores?

Accepted Answer

They are formed externally on a pedestal called a basidium.

Question 19

A child presents with perianal itching and is diagnosed with a pinworm infection. Which nematode is responsible, and what is the infective stage?

Accepted Answer

Enterobius vermicularis; eggs

Question 20

Which of the following best explains why algal blooms can be harmful to aquatic ecosystems?

Accepted Answer

They can release toxins or die and consume oxygen, harming aquatic life.

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

Study Guide - Practice Questions

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