Question 1

Which of the following best describes the main difference between the lytic and lysogenic cycles of bacteriophage replication?

Accepted Answer

The lytic cycle results in immediate destruction of the host cell, while the lysogenic cycle allows the viral DNA to persist in the host chromosome without killing the cell.

Question 2

During the lytic cycle, what is the primary function of lysosomes released by the virus?

Accepted Answer

To break down the host cell's peptidoglycan layer, facilitating viral entry.

Question 3

Which enzyme is characteristic of Retroviridae and is essential for their replication?

Accepted Answer

Reverse transcriptase

Question 4

A bacteriophage integrates its DNA into the host chromosome and remains dormant. What is this integrated viral DNA called?

Accepted Answer

Prophage

Question 5

Which of the following statements about viruses is TRUE?

Accepted Answer

Viruses are measured in nanometers and do not use their own enzymes for replication.

Question 6

Which structure is responsible for the attachment of bacteria to surfaces?

Accepted Answer

Glycocalyx

Question 7

What is the main significance of Koch’s postulates in microbiology?

Accepted Answer

They demonstrate that microorganisms cause disease.

Question 8

Which of the following is an infectious protein that can cause disease?

Accepted Answer

Prion

Question 9

Which of the following best describes the function of endospores in bacteria?

Accepted Answer

They enable bacteria to survive environmental changes.

Question 10

Which of the following statements about prokaryotic ribosomes is correct?

Accepted Answer

They are 70S, composed of 30S and 50S subunits.

Question 11

Which of the following is NOT true about the role of microorganisms in human health?

Accepted Answer

All microorganisms keep a role in keeping us healthy.

Question 12

Which of the following best describes a symbiotic relationship?

Accepted Answer

Organisms living together with mutual benefit.

Question 13

Which of the following is a correct statement about archaea?

Accepted Answer

They are extremophiles found among prokaryotes.

Question 14

Which process allows a virus to enter a host cell by engulfment?

Accepted Answer

Endocytosis

Question 15

Which of the following is a storage structure found in some bacteria?

Accepted Answer

Inclusion

Question 16

Which of the following is true about the genetic information of virions?

Accepted Answer

They code for similar things and have the same genetic information.

Question 17

Which of the following best describes the role of reverse transcriptase in viral replication?

Accepted Answer

It synthesizes DNA from an RNA template.

Question 18

Which of the following is a correct sequence of events in the lytic cycle?

Accepted Answer

Attachment → Entry → Synthesis → Assembly → Release

Question 19

Which of the following best describes the morphology of a microorganism?

Accepted Answer

Its shape

Question 20

Which of the following is a correct statement about algae?

Accepted Answer

They require moist environments to thrive.

Microbiology Study Notes lab partner notes

Study Guide - Practice Questions

Study Guide - Flashcards