Question 1

Which of the following is NOT a characteristic of parasitic helminths?

Accepted Answer

Extensive mechanisms for strong locomotion

Question 2

Dermatophytes are fungi that cause which type of mycoses?

Accepted Answer

Cutaneous mycoses

Question 3

Which of the following statements best characterizes the signs and symptoms of an Ascaris lumbricoides infection?

Accepted Answer

It is often asymptomatic, but severe infection can become known when adult worms exit the host in stool, by being coughed up, or by emerging from the nose while the person is asleep.

Question 4

Which of the following is the correct life cycle of Ascaris lumbricoides?

Accepted Answer

Human breathes in egg; egg hatches in lungs; larva is swallowed and matures in intestine; adult females lay eggs; eggs exit host in stool.

Question 5

Mebendazole acts against Ascaris lumbricoides by __________.

Accepted Answer

inhibiting the formation of microtubules, which prevents the worms from absorbing nutrients

Question 6

Parasitic helminths are members of which two phyla?

Accepted Answer

Nematoda and Platyhelminthes

Question 7

Which of the following statements about protozoa is TRUE?

Accepted Answer

Some protozoa reproduce by schizogony, a process similar to budding in yeast.

Question 8

Which of the following best describes three characteristics common to all protozoa?

Accepted Answer

Eukaryotic, unicellular, lack a cell wall

Question 9

Which of the following is a unique feature of prokaryotic reproduction?

Accepted Answer

Binary fission

Question 10

Which of the following statements about the alternation of generations in algae is correct?

Accepted Answer

Algae alternate between multicellular haploid and diploid forms, with meiosis producing haploid spores.

Question 11

Which of the following algae groups is considered the progenitor of land plants and has 18S rRNA sequences comparable to plants?

Accepted Answer

Green algae

Question 12

Which of the following is a fundamental difference between prokaryotes and eukaryotes?

Accepted Answer

Eukaryotes have membrane-bound organelles, while prokaryotes do not.

Question 13

Which of the following eukaryotic organisms is involved in causing or spreading disease?

Accepted Answer

Protozoan

Question 14

Which of the following statements is TRUE regarding the endomembrane system in eukaryotic cells?

Accepted Answer

It includes the ER, Golgi apparatus, lysosomes, and vesicles, and is involved in processing and packaging proteins.

Question 15

Where are lipids made in the cell?

Accepted Answer

Smooth endoplasmic reticulum

Question 16

Which organelle contains digestive enzymes and breaks down worn-out organelles?

Accepted Answer

Lysosome

Question 17

Which of the following best describes the function of ribosomes in eukaryotic cells?

Accepted Answer

They synthesize proteins by translating mRNA.

Question 18

Which of the following statements about the plasma membrane is correct?

Accepted Answer

It surrounds the cell and regulates the movement of materials in and out.

Question 19

Which of the following is a common misconception about protozoa?

Accepted Answer

Most protozoa are photosynthetic.

Question 20

Which of the following statements about the role of protozoa and algae in soil health is correct?

Accepted Answer

Protozoa help maintain balanced bacterial populations and contribute to nutrient cycling.

Microbiology Study Guide: Eukaryotic Microbes, Helminths, Protozoa, and Algae

Study Guide - Practice Questions

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