Question 1

Which of the following best describes the nutritional strategy of chemoheterotrophic fungi?

Accepted Answer

They absorb nutrients by digesting dissolved organic matter (DOM) through their cell walls.

Question 2

A patient presents with a white, patchy infection in their mouth. Laboratory analysis reveals the presence of unicellular, oval-shaped eukaryotic cells. Which organism is most likely responsible?

Accepted Answer

Candida albicans

Question 3

Which of the following statements about yeasts is CORRECT?

Accepted Answer

Yeasts are unicellular fungi that are spherical or oval in shape.

Question 4

Which type of fungal spore is produced asexually and is commonly found in molds such as Penicillium?

Accepted Answer

Conidiospore

Question 5

A bread sample left in a humid environment develops black, fuzzy growth. Which genus is most likely responsible, and what is the main reproductive structure involved?

Accepted Answer

Rhizopus; sporangium

Question 6

Which of the following best explains why many protozoa can survive in low-solute environments?

Accepted Answer

They possess contractile vacuoles that expel excess water from the cell.

Question 7

Which protozoan group is characterized by the use of pseudopodia for locomotion?

Accepted Answer

Family Amoebidae

Question 8

A patient with HIV develops a severe infection with Toxoplasma gondii. Which group does this organism belong to, and what is a key feature of this group?

Accepted Answer

Phylum Apicomplexa; nonmotile obligate parasites

Question 9

Which of the following is TRUE regarding the taxonomy of fungi?

Accepted Answer

Basidiomycetes include mushrooms and produce basidiospores.

Question 10

Which of the following pairs is CORRECTLY matched with its disease or effect?

Accepted Answer

Plasmodium; malaria

Question 11

A microbiologist isolates a protozoan with both a macronucleus and a micronucleus. Which group does this organism most likely belong to?

Accepted Answer

Phylum Ciliophora

Question 12

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

Accepted Answer

They are filamentous fungi that can cause the biodegradation of materials and food spoilage.

Question 13

Which of the following statements about fungal reproduction is CORRECT?

Accepted Answer

Some fungi reproduce asexually by budding or producing spores.

Question 14

Which of the following is a distinguishing feature of the Order Diplomonadida?

Accepted Answer

Multiple flagella and lack of mitochondria

Question 15

Which of the following best explains why Candida albicans can cause infections in immunocompromised individuals?

Accepted Answer

It is an opportunistic pathogen that can overgrow when the immune system is weakened.

Question 16

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

Accepted Answer

They help regulate osmotic pressure by expelling excess water.

Question 17

Which fungal group is characterized by the production of sexual spores in a sac-like structure?

Accepted Answer

Ascomycetes

Question 18

A patient is diagnosed with 'backpackers disease' after drinking untreated stream water. Which protozoan is most likely responsible, and what is a key feature of this organism?

Accepted Answer

Giardia; multiple flagella and lack of mitochondria

Question 19

Which of the following best describes the difference between yeasts and molds?

Accepted Answer

Yeasts are unicellular and reproduce by budding, while molds are multicellular and form hyphae.

Question 20

Which of the following is a real-world application of understanding fungal taxonomy?

Accepted Answer

Identifying the cause of bread spoilage to improve food preservation methods.

Fungi and Protozoa: Structure, Taxonomy, and Key Characteristics

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