Question 1

Which of the following statements best describes a key difference between fungi and bacteria?

Accepted Answer

Fungi have sterols in their cell membranes, while bacteria (except Mycoplasma) do not.

Question 2

Which of the following is a medically important fungus used in the production of an anticancer drug?

Accepted Answer

Taxomyces

Question 3

A patient with AIDS develops chronic diarrhea and keratoconjunctivitis. Which group of fungi is most likely responsible?

Accepted Answer

Microsporidia

Question 4

Which type of mycosis is most likely to affect hair, skin, and nails?

Accepted Answer

Cutaneous mycosis

Question 5

Which of the following best explains why fungi can grow in environments with high sugar and salt concentrations?

Accepted Answer

Fungi are resistant to osmotic pressure.

Question 6

Which phylum of algae is harvested for agar and carrageenan, and can live at greater depths than other algae?

Accepted Answer

Red algae

Question 7

A neurotoxin produced by diatoms can cause neurological disease in humans. What is the name of this toxin?

Accepted Answer

Domoic acid

Question 8

Which of the following is a characteristic of dinoflagellates?

Accepted Answer

They have cellulose in their plasma membrane.

Question 9

Which of the following best describes the ecological role of algae?

Accepted Answer

They fix $$CO_2$$ into organic molecules and produce 80% of Earth's $$O_2.$$

Question 10

Which protozoan group includes organisms that cause African sleeping sickness and Chagas disease?

Accepted Answer

Euglenozoa

Question 11

A patient presents with a waterborne illness caused by an obligate intracellular parasite. Which protozoan is most likely responsible?

Accepted Answer

Cryptosporidium

Question 12

Which of the following is NOT a typical adaptation of parasitic helminths?

Accepted Answer

Highly developed digestive system

Question 13

Which class of arthropods includes vectors with six legs, such as mosquitoes and lice?

Accepted Answer

Insecta

Question 14

In biological transmission by arthropod vectors, which of the following occurs?

Accepted Answer

The pathogen multiplies within the vector.

Question 15

Which of the following best describes the definitive host in a vector-borne disease?

Accepted Answer

The host in which the microbe's sexual reproduction takes place.

Question 16

Which of the following fungi is used in the production of statins, drugs that inhibit cholesterol synthesis?

Accepted Answer

Aspergillus terreus

Question 17

Which of the following is a unique feature of microsporidia compared to other fungi?

Accepted Answer

They are obligate intracellular parasites.

Question 18

Which of the following is a correct pairing of an organism and its economic use?

Accepted Answer

Trichoderma – production of cellulase

Question 19

Which of the following best explains why green algae are considered ancestors of terrestrial plants?

Accepted Answer

They have chlorophyll a and b and store starch.

Question 20

A patient develops paralytic shellfish poisoning after eating contaminated shellfish. Which group of algae is most likely responsible?

Accepted Answer

Dinoflagellates

(Chapter 12) The Eukaryotes: Fungi, Algae, Protozoa, and Helminths – Study Notes

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