$Total\ Magnification = Objective\ Lens\ Magnification \times Ocular\ Lens\ Magnification$

Question 1

Which of the following is NOT a use of microorganisms in biotechnology or industry?

Accepted Answer

Increasing the rate of food spoilage

Question 2

Which scientist is credited with establishing the first microbiology laboratory and proving the link between microbes and disease?

Accepted Answer

Robert Koch

Question 3

A microbiologist wants to observe the internal structures of unstained living cells. Which type of microscopy should they use?

Accepted Answer

Phase contrast microscopy

Question 4

Which of the following statements about viruses is TRUE?

Accepted Answer

Viruses contain DNA or RNA and a protein coat

Question 5

The resolving power of a microscope is defined as:

Accepted Answer

The ability to distinguish two points as separate

Question 6

Which equation correctly represents the calculation of total magnification in a compound light microscope?

Accepted Answer

$Total\ Magnification = Objective\ Lens\ Magnification 	imes Ocular\ Lens\ Magnification$

Question 7

Which of the following is a correct match between a microorganism and its domain?

Accepted Answer

Fungi - Eukarya

Question 8

Why is immersion oil used with the 100x objective lens in light microscopy?

Accepted Answer

To prevent light from bending and improve resolution

Question 9

Which historical event is correctly paired with its scientist?

Accepted Answer

First microscope and cell theory - Robert Hooke

Question 10

A researcher needs to visualize the surface details of a virus particle at the nanometer scale. Which microscopy technique should they use?

Accepted Answer

Scanning electron microscopy

Question 11

Which of the following is a function of the human microbiome?

Accepted Answer

Helping the immune system fight disease

Question 12

Which process is described by the equation $C_6H_{12}O_6 \rightarrow 2C_3H_4O_3 + 2ATP$?

Accepted Answer

Glycolysis

Question 13

Which of the following is NOT a characteristic of Archaea?

Accepted Answer

Presence of a nucleus

Question 14

Which type of microscopy uses fluorescent dyes to visualize specific cell structures?

Accepted Answer

Fluorescence microscopy

Question 15

Which scientist demonstrated the importance of handwashing in preventing disease transmission?

Accepted Answer

Ignaz Semmelweis

Question 16

Which of the following is a correct statement about the three domains of life?

Accepted Answer

Bacteria and Archaea are both prokaryotic

Question 17

Which of the following is a real-world application of knowledge about microorganisms?

Accepted Answer

Preventing food spoilage

Question 18

Which equation best represents a redox reaction in microbial metabolism?

Accepted Answer

$A_{red} + B_{ox} \rightarrow A_{ox} + B_{red}$

Question 19

Which of the following is a correct description of catabolism?

Accepted Answer

Breaking down molecules to release energy

Question 20

Which of the following is a major contribution of Alexander Fleming to microbiology?

Accepted Answer

Discovering penicillin as the first antibiotic

Microbiology 131: Study Notes on Microorganisms and Microscopy

Study Guide - Practice Questions