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Unit 1 (wk1-3)

Authored by Rebekah Leon

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University

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Unit 1 (wk1-3)
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35 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Louis Pasteur sterilized nutrient broth inside flasks with bent necks. He then allowed some flasks to sit undisturbed whereas he tipped some of flasks so the nutrient broth touched the dust that accumulated in the bent necks. Why did he do this?

To demonstrate the process of Pasteurization

To demonstrate that organisms could not spontaneously generate themselves

To demonstrate that pathogens can be grown under specific laboratory conditions

To isolate certain fungi that eventually led to the discovery of Penicillin

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Who, with his rudimentary microscope, observed microorganisms and coined the term “Animalcules?"

Joseph Lister

Robert Koch

Louis Pasteur

Anton van Leeuwenhoek

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

You discover a new microbe while working on a lab project. The microbe is taken to a lab that specializes in placing organisms in their correct phylogenic niche. In order to determine its evolutionary relatedness to other microbes, the lab carries out_________.

Small Subunit rRNA analysis

microscopic analysis

biochemical tests

DNA fingerprinting

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Small internal cell structures are best visualized with a_________. 

light-field microscope

dark-field microscope

  transmission electron microscope

  flagellar microscope

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The term used to describe bacteria that are rod-shaped is _________.

  coccus

  bacillus

  vibrio

  coccobacillus

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Twitching motility involves _________.

  peritrichous flagella

  periplasmic flagella

  type IV pili

  monotrichous flagella

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

_________ are hollow tube-like structures that hold some archaeal daughter cells together after cell division while _________ are grappling hook-like structures that appear to attach archaeal cells to surfaces.

  Pili; hami

  Cannulae; hami

  Hami; fimbriae

  Cannulae; pili

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