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 reproduce by conjugation.

Question 2

A patient presents with severe diarrhea after drinking untreated water from a stream. 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 a protozoan group with its method of movement?

Accepted Answer

Radiolaria move using reinforced pseudopods radiating from the central body

Question 5

A scientist is studying a mold with long, branched, tubular filaments that lack cross walls. What is the term for these filaments?

Accepted Answer

Aseptate hyphae

Question 6

Which of the following algae has cell walls composed of agar or carrageenan and is represented by the genus Gelidum?

Accepted Answer

Red algae (Rhodophyta)

Question 7

Which disease is transmitted by the bite of a sand fly and caused by a protozoan with a kinetoplast?

Accepted Answer

Leishmaniasis

Question 8

A lichen is best described as:

Accepted Answer

A partnership between fungi and photosynthetic microbes such as cyanobacteria or green algae

Question 9

Which of the following fungi is responsible for ergot poisoning, causing hallucinations in humans and abortions in cattle?

Accepted Answer

Claviceps

Question 10

Which protozoan genus is photoautotrophic, unicellular, and contains chloroplasts with chlorophylls a and b?

Accepted Answer

Euglena

Question 11

Which of the following is a distinguishing feature of diatoms (Chrysophyta/Bacillariophyceae)?

Accepted Answer

Cell walls made of silica, consisting of two halves called frustules

Question 12

A patient is diagnosed with amebic dysentery. Which amoeba is most likely responsible?

Accepted Answer

Entamoeba

Question 13

Which of the following is true regarding the reproductive structures of molds?

Accepted Answer

Fruiting bodies are composed of hyphae and are only small visible extensions of vast underground mycelia

Question 14

Which of the following diseases is transmitted by mosquitoes?

Accepted Answer

Malaria

Question 15

Which of the following is a beneficial mold used in healthcare as an antibiotic?

Accepted Answer

Penicillium

Question 16

Which protozoan group is characterized by unicellular microbes with photosynthetic pigments, bioluminescence, and the ability to cause red tide?

Accepted Answer

Dinoflagellates

Question 17

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

Accepted Answer

Haustoria are modified hyphae that penetrate a host and withdraw nutrients

Question 18

A scientist observes a marine plankton with ornate shells composed of silica and pseudopods radiating from the central body. Which group does this organism belong to?

Accepted Answer

Radiolaria

Question 19

Which of the following fungi has been an important tool in genetics and biochemistry?

Accepted Answer

Neurospora

Question 20

Which of the following equations best represents the fermentation process carried out by Saccharomyces?

Accepted Answer

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

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

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