Question 1

Which of the following statements best describes the main nutritional mode of most fungi?

Accepted Answer

Fungi are saprobes, meaning they absorb nutrients from decaying organic matter.

Question 2

A patient presents with a severe diarrheal illness after drinking untreated stream water. Microscopy reveals a flagellated protozoan with two equal-sized nuclei and multiple flagella. Which organism is most likely responsible?

Accepted Answer

Giardia lamblia

Question 3

Which of the following best explains why diatoms are ecologically significant?

Accepted Answer

They are a major source of the world's oxygen and form the base of marine phytoplankton.

Question 4

Which of the following is TRUE regarding the reproduction of protozoa?

Accepted Answer

Protozoa can reproduce both asexually (e.g., binary fission, schizogony) and sexually (e.g., gametocytes fusing to form a zygote).

Question 5

A scientist is studying a unicellular eukaryote that moves using cilia, is chemoheterotrophic, and has two nuclei. Which group does this organism most likely belong to?

Accepted Answer

Ciliates

Question 6

Which of the following best describes the structure and function of fungal hyphae?

Accepted Answer

Hyphae are long, filamentous structures that can be septate or aseptate and form the mycelium of molds.

Question 7

A lichen is best described as:

Accepted Answer

A symbiotic partnership between a fungus and a photosynthetic microbe, such as an alga or cyanobacterium.

Question 8

Which of the following is a correct match between a protozoan group and its mode of locomotion?

Accepted Answer

Sarcodina – move by pseudopods

Question 9

Which of the following equations correctly represents the alternation of generations in multicellular algae?

Accepted Answer

$2n \xrightarrow{meiosis} n \xrightarrow{fertilization} 2n$

Question 10

A patient is diagnosed with African sleeping sickness. Which protozoan group and organelle are most relevant to the causative agent?

Accepted Answer

Kinetoplastids; kinetoplast

Question 11

Which of the following best explains why Microsporidia are a threat to immunocompromised patients?

Accepted Answer

They are obligate intracellular parasites that are difficult to classify and can cause severe disease.

Question 12

Which of the following is a distinguishing feature of basidiomycota compared to ascomycota?

Accepted Answer

Basidiomycota produce spores on a club-shaped structure called a basidium.

Question 13

Which of the following is a correct pairing of a human pathogen and the disease it causes?

Accepted Answer

Giardia – severe diarrhea (giardiasis)

Question 14

Which of the following best describes the ecological role of fungi in the environment?

Accepted Answer

Fungi are decomposers that recycle nutrients by breaking down dead organic matter.

Question 15

Which of the following statements about dinoflagellates is TRUE?

Accepted Answer

Dinoflagellates are unicellular, photosynthetic protists that can produce neurotoxins.

Question 16

Which of the following best describes the process of sexual spore formation in fungi?

Accepted Answer

Sexual spores are formed after the fusion of + and - hyphae, resulting in a dikaryon stage before spore formation.

Question 17

A scientist observes a eukaryotic microorganism with a silica shell and a red-orange pigment called carotene. Which group does this organism most likely belong to?

Accepted Answer

Chrysophyta (Diatoms)

Question 18

Which of the following equations best represents the process of asexual spore formation in filamentous fungi?

Accepted Answer

$	ext{Hypha} \xrightarrow{mitosis} 	ext{spores}$

Question 19

Which of the following is a correct statement about the classification of algae?

Accepted Answer

Algae are classified based on their photosynthetic pigments and storage products.

Question 20

Which of the following best explains the significance of the Great Potato Famine in microbiology?

Accepted Answer

It was caused by a water mold (oomycete) that is not a true fungus.

Study Notes: Protozoa, Fungi, Algae, and Other Eukaryotic Microbes

Study Guide - Practice Questions

Study Guide - Flashcards