$$\text{Total Magnification} = \text{Power of Ocular Lens} \times \text{Power of Objective Lens}$$

Question 1

Which of the following statements best describes the difference between prokaryotic and eukaryotic cells?

Accepted Answer

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells possess both.

Question 2

Arrange the following microorganisms in order of increasing size: prion, virus, bacteria, fungi.

Accepted Answer

Prion, virus, bacteria, fungi

Question 3

Which scientist disproved the theory of spontaneous generation by demonstrating that life does not arise from non-living matter?

Accepted Answer

Louis Pasteur

Question 4

What is the total magnification of a microscope if the ocular lens is $$10	imes$$ and the objective lens is $$40	imes$$?

Accepted Answer

$$400	imes$$

Question 5

Which of the following is an example of an acellular microorganism?

Accepted Answer

Virus

Question 6

Which property of a microscope allows you to distinguish two points as separate entities?

Accepted Answer

Resolution

Question 7

Which medium contains only known chemical components and no animal-derived substances?

Accepted Answer

Defined/synthetic medium

Question 8

MacConkey's agar is used to differentiate between Salmonella and E. coli based on which property?

Accepted Answer

Lactose fermentation

Question 9

Which of the following is NOT one of the six I's of culturing microbes?

Accepted Answer

Interpretation

Question 10

Which bacteria cannot be stained by Gram staining due to their unique cell wall structure?

Accepted Answer

Mycobacterium tuberculosis

Question 11

What is the main function of macromolecules in living organisms?

Accepted Answer

They provide structural support, store energy, and carry genetic information.

Question 12

Which of the following is a function of decomposers in an ecosystem?

Accepted Answer

Breaking down dead organic matter and recycling nutrients

Question 13

Which scientist is credited with verifying the Germ Theory and discovering the causes of anthrax, tuberculosis, and cholera?

Accepted Answer

Robert Koch

Question 14

Which of the following is a correct sequence of steps in the scientific method?

Accepted Answer

Observation, hypothesis, experiment, results, conclusion

Question 15

Which of the following is a pathogen?

Accepted Answer

Escherichia coli causing food poisoning

Question 16

Which of the following is an example of a bacterium linked to non-infectious disease or cancer?

Accepted Answer

Helicobacter pylori

Question 17

Which type of microscope uses a beam of accelerated electrons as a source of illumination?

Accepted Answer

Electron microscope

Question 18

Which of the following media is used to visually distinguish between lactose fermenting and non-lactose fermenting bacteria?

Accepted Answer

Differential media

Question 19

Which of the following is a correct formula for calculating total magnification in a compound microscope?

Accepted Answer

$$	ext{Total Magnification} = 	ext{Power of Ocular Lens} 	imes 	ext{Power of Objective Lens}$$

Question 20

Which of the following is a function of nucleic acids in living organisms?

Accepted Answer

Storing and transmitting genetic information

Fundamentals of Microbiology: Concepts, Methods, and Applications

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