Q: Which equation describes the process of viral mRNA synthesis from a double-stranded DNA virus according to the Baltimore classification?

$$\text{dsDNA} \rightarrow \text{mRNA}$$

Q: Which equation best represents the replication cycle of a retrovirus?

$$+\text{RNA} \rightarrow \text{DNA} \rightarrow \text{dsDNA} \rightarrow \text{mRNA}$$

Q: Which equation best represents the biosynthesis step in the lytic cycle of a bacteriophage?

$$\text{Phage DNA} \rightarrow \text{Viral components}$$

Q: Which equation best represents the process of plasmogamy in fungal sexual reproduction?

$$\text{Membrane fusion} \rightarrow \text{(n+n) dikaryotic state}$$

Question 1

Which unique component of fungal cell membranes is targeted by triazole antifungal drugs?

Accepted Answer

Ergosterols

Question 2

A fungus is observed decomposing diapers rapidly in a landfill. Which property of its hyphae most likely contributes to this ability?

Accepted Answer

High surface area to volume ratio

Question 3

Which equation best represents the alternation of generations in fungi, where haploid and diploid phases alternate?

Accepted Answer

$$N \rightarrow 2N \rightarrow N$$

Question 4

Which fungal phylum is responsible for the discovery of the 'one gene = one protein' concept and is also associated with penicillin production?

Accepted Answer

Ascomycota

Question 5

A patient with a compromised immune system develops oral thrush. Which fungal form is most likely responsible for persistent infection?

Accepted Answer

Hyphal form

Question 6

Which equation describes the process of viral mRNA synthesis from a double-stranded DNA virus according to the Baltimore classification?

Accepted Answer

$$	ext{dsDNA} ightarrow 	ext{mRNA}$$

Question 7

Which of the following is a key difference between fungal and bacterial cell walls?

Accepted Answer

Fungi have cell walls made of chitin

Question 8

Which process allows bacteria to acquire new genetic material from viruses?

Accepted Answer

Transduction

Question 9

Which equation best represents the replication cycle of a retrovirus?

Accepted Answer

$$+	ext{RNA} ightarrow 	ext{DNA} ightarrow 	ext{dsDNA} ightarrow 	ext{mRNA}$$

Question 10

Which of the following is NOT a characteristic of viruses?

Accepted Answer

Contain both DNA and RNA simultaneously

Question 11

Which type of viral symmetry is most space-efficient and commonly found in polyhedral viruses?

Accepted Answer

Icosahedral

Question 12

Which equation best represents the biosynthesis step in the lytic cycle of a bacteriophage?

Accepted Answer

$$	ext{Phage DNA} ightarrow 	ext{Viral components}$$

Question 13

Which of the following best describes the role of ergosterol in fungal cells?

Accepted Answer

Provides structural strength to the cell membrane

Question 14

Which of the following is a plausible explanation for why prions cause disease?

Accepted Answer

They are misfolded proteins that induce misfolding in other proteins

Question 15

Which equation best represents the process of plasmogamy in fungal sexual reproduction?

Accepted Answer

$$	ext{Membrane fusion} ightarrow 	ext{(n+n) dikaryotic state}$$

Question 16

Which of the following best describes the function of efflux pumps in bacteria?

Accepted Answer

They expel toxic substances, including antibiotics, from the cell

Question 17

Which equation best represents the process of viral genome integration during the lysogenic cycle?

Accepted Answer

$$	ext{Viral DNA} + 	ext{Host DNA} ightarrow 	ext{Prophage}$$

Question 18

Which of the following is a major advantage of helical viral symmetry?

Accepted Answer

Allows packaging of variable genome lengths

Question 19

Which of the following is true about the dikaryotic state in fungi?

Accepted Answer

It consists of two nuclei per cell, each with a haploid genome

Question 20

Which equation best represents the process of conjugation in protozoa?

Accepted Answer

$$	ext{Micronucleus exchange} ightarrow 	ext{New macronucleus formation}$$

Question 21

Which of the following best explains why viruses are classified by their nucleic acid type rather than their capsid shape?

Accepted Answer

Nucleic acid type determines replication strategy and host range

Fungi, Protists, and Viruses: Structure, Classification, and Life Cycles

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