Question 1

Which of the following statements best distinguishes Apicomplexans from Ciliates among the alveolates?

Accepted Answer

Apicomplexans are chemoheterotrophic pathogens that reproduce by schizogony and possess apical organelles for host cell penetration, while Ciliates are chemoheterotrophs with cilia and two nuclei that reproduce by conjugation.

Question 2

A patient presents with severe diarrhea after drinking untreated water. Microscopic examination reveals a protozoan with two nuclei and multiple flagella. Which organism is most likely responsible?

Accepted Answer

Giardia

Question 3

Which feature is unique to the division Basidiomycota among the fungi listed?

Accepted Answer

Production of basidiospores during sexual reproduction

Question 4

Which of the following correctly matches the protozoan genus with its disease and transmission vector?

Accepted Answer

Leishmania – leishmaniasis – sand fly

Question 5

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

Accepted Answer

Haustoria are modified hyphae that penetrate host tissues to withdraw nutrients.

Question 6

A scientist is studying marine plankton and observes organisms with ornate silica shells and pseudopods radiating from a central body. Which group do these organisms belong to?

Accepted Answer

Radiolaria

Question 7

Which equation best represents the fermentation process carried out by Saccharomyces?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$} \rightarrow 2\mathrm{C_2H_5OH} + 2\mathrm{CO_2$}$$

Question 8

Which of the following algae groups is characterized by cell walls containing agar or carrageenan?

Accepted Answer

Red algae (Rhodophyta)

Question 9

Which protozoan is classified as a photoautotrophic, unicellular microbe with chloroplasts containing chlorophylls a and b and carotene?

Accepted Answer

Euglena

Question 10

A patient is diagnosed with amebic dysentery. Which protozoan is most likely responsible, and where does it reside?

Accepted Answer

Entamoeba; inside animals

Question 11

Which of the following is a partnership between fungi and photosynthetic microbes, such as cyanobacteria or green algae?

Accepted Answer

Lichen

Question 12

Which of the following diseases is transmitted by mosquitoes?

Accepted Answer

Malaria

Question 13

Which genus of fungi is used in the production of antibiotics and belongs to the division Ascomycota?

Accepted Answer

Penicillium

Question 14

Which of the following best describes the cell wall structure of diatoms?

Accepted Answer

Cell walls containing silica, consisting of two halves called frustules

Question 15

Which protozoan genus is responsible for African sleeping sickness and contains a unique region of mitochondrial DNA called a kinetoplast?

Accepted Answer

Trypanosoma

Question 16

Which of the following is a distinguishing feature of the thallus in fungi?

Accepted Answer

It is the vegetative body composed of filaments or plates of cells.

Question 17

Which division does the genus Rhizopus belong to, and what is its ecological role?

Accepted Answer

Zygomycota; feeds on dead or decaying matter

Question 18

Which of the following best describes the reproductive process of Ciliates?

Accepted Answer

They reproduce by conjugation, involving the exchange of nuclei between compatible mating cells.

Question 19

Which of the following is a correct match between an insect vector and the disease it transmits?

Accepted Answer

Kissing bugs – Chagas’ disease

Question 20

Which genus of algae lacks cell walls and is known for causing red tide and producing neurotoxins?

Accepted Answer

Gymnodinium

Protozoa, Fungi, Algae, and Arthropod Vectors: Classification and Features

Study Guide - Practice Questions

Study Guide - Flashcards