Question 1

Which of the following statements best explains why mitosis is not synonymous with 'cell division' in eukaryotes?

Accepted Answer

Mitosis is the division of the nucleus, while cell division (cytokinesis) refers to the division of the cytoplasm, which may not always occur simultaneously.

Question 2

Which of the following eukaryotic microorganisms is correctly matched with its ecological or medical significance?

Accepted Answer

Plasmodium – causes malaria in humans

Question 3

Which of the following best describes the process of schizogony as seen in Plasmodium species?

Accepted Answer

Multiple mitoses produce a multinucleate cell (schizont), followed by simultaneous cytokinesis releasing many daughter cells

Question 4

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

Accepted Answer

Fungi have cell walls composed of chitin, while protozoa lack cell walls.

Question 5

Which of the following equations correctly represents the ploidy change during meiosis in a diploid eukaryotic cell?

Accepted Answer

$$2n \rightarrow n$$

Question 6

A scientist discovers a unicellular organism with two nuclei, multiple flagella, and no mitochondria. Which group does this organism most likely belong to?

Accepted Answer

Diplomonadida

Question 7

Which of the following best explains why some dinoflagellates are dangerous to humans?

Accepted Answer

They produce neurotoxins that can accumulate in seafood and cause illness when ingested.

Question 8

Which of the following is NOT a characteristic of all protozoa?

Accepted Answer

All are pathogenic to humans

Question 9

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

Accepted Answer

Chemoheterotrophic absorbers (saprobes)

Question 10

Which of the following statements about fungal reproduction is correct?

Accepted Answer

Yeasts reproduce by budding, and some can form pseudohyphae.

Question 11

Which of the following is a correct pairing of a fungal division and its distinguishing sexual spore?

Accepted Answer

Basidiomycota – basidiospores

Question 12

Which of the following best explains why large eukaryotes such as mosquitoes and ticks are studied in microbiology?

Accepted Answer

They serve as vectors, transmitting microbial pathogens to humans and animals.

Question 13

Which of the following is a unique feature of Euglenozoa that distinguishes them from other protozoa?

Accepted Answer

Presence of a crystalline or spiral rod inside their flagella

Question 14

Which of the following is a correct description of the ecological role of lichens?

Accepted Answer

They are partnerships between fungi and photosynthetic microbes, contributing to soil formation and nutrient cycling.

Question 15

Which of the following best describes the difference between septate and aseptate hyphae in fungi?

Accepted Answer

Septate hyphae are divided into cells by cross walls, while aseptate hyphae lack these divisions.

Question 16

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

Accepted Answer

Algae have sexual reproductive structures in which every cell becomes a gamete.

Question 17

Which of the following is a correct statement about the role of contractile vacuoles in protozoa?

Accepted Answer

They pump water out of the cell to prevent osmotic lysis.

Question 18

Which of the following best describes the function of haustoria in fungi?

Accepted Answer

They are modified hyphae that penetrate host tissues to absorb nutrients.

Question 19

Which of the following is a correct statement about the difference between foraminifera and radiolaria?

Accepted Answer

Foraminifera have shells made of calcium carbonate, while radiolaria have shells made of silica.

Question 20

Which of the following equations best represents the outcome of mitosis in a diploid eukaryotic cell?

Accepted Answer

$$2n \rightarrow 2n$$

Characterizing and Classifying Eukaryotes: Protozoa, Fungi, Algae, and Parasitic Helminths

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