Microbiology Quiz: Bacteria, Fungi, and Viruses

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Questions and Answers

What type of genetic material do bacteria possess?

Linear DNA associated with histones
Double-stranded DNA within a nucleus
Separate RNA and DNA strands in membrane-bound organelles
Circular loop of genetic material in the cytoplasm (correct)

What is the main function of hyphae in fungi?

To absorb food from their surroundings (correct)
To provide structural support to the cell
To reproduce via spores
To produce genetic material

What structure distinguishes the cell walls of yeasts from those of bacteria?

Proteins
Cellulose
Peptidoglycan
Chitin (correct)

Which statement about viruses is accurate?

Viruses invade living hosts for reproduction (D) Signup and view all the answers

How do bacteria move?

By flagella beating (B) Signup and view all the answers

What distinguishes fungi from bacteria?

Fungi have a nucleus and can be multicellular (D) Signup and view all the answers

What do plasmids in bacteria represent?

Small extra pieces of genetic information (A) Signup and view all the answers

What is the size range of viruses compared to human cells?

1000 times smaller (C) Signup and view all the answers

Flashcards

Bacteria

Single-celled organisms with a loop of genetic material in the cytoplasm, but no nucleus. They have a cell wall with a different structure from plant cell walls.

Plasmids

Small extra pieces of genetic information found in some bacteria.

Capsule

A protective layer that surrounds some bacteria, shielding them from drying out and attack by other cells.