Bacterial Shapes and Classification Quiz

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Questions and Answers

What is the shape of Campylobacter jejuni?

Spiral shaped

Give an example of a coma-shaped bacteria.

Vibrio cholerae

Which group of bacteria is corkscrew shaped?

Spirochetes

What is the size range of most archaea?

<p>0.1 to 15 μ diameter and up to 200 μ long</p> Signup and view all the answers

Give an example of a halophile archaeon.

<p>Halobacterium</p> Signup and view all the answers

What type of archaeans live at extremely hot temperatures?

<p>Thermophiles</p> Signup and view all the answers

How do Archaeans obtain energy and what molecule is formed during this process?

<p>Archaeans obtain energy by absorbing sunlight using their membrane pigment, bacteriorhodopsin. This reaction leads to the formation of the energy molecule Adenosine Triphosphate (ATP).</p> Signup and view all the answers

Describe the locomotion and reproduction characteristics of Archaeans.

<p>Archaeans exhibit locomotion and reproduction similar to bacteria.</p> Signup and view all the answers

What role does bacteriorhodopsin play in Archaeans' energy formation?

<p>Bacteriorhodopsin is the membrane pigment in Archaeans that absorbs sunlight, initiating the process of energy formation.</p> Signup and view all the answers

How do Archaeans differ in using sunlight for energy compared to plants?

<p>Archaeans use sunlight to make energy, but not in the same way as plants do.</p> Signup and view all the answers

Where do Archaeans typically grow and how do they interact with their environment?

<p>Archaeans grow on artificial laboratory media and exhibit host interactions.</p> Signup and view all the answers

What is the size range of most bacteria?

<p>0.2 um-100 um</p> Signup and view all the answers

What is the study of bacteria called?

<p>Bacteriology</p> Signup and view all the answers

Describe the structure of bacteria.

<p>Simpler cell structure without a nucleus or membrane-bound organelles.</p> Signup and view all the answers

What is the singular form of 'bacteria' referred to as?

<p>Bacterium</p> Signup and view all the answers

What is the plural form of 'bacterium' referred to as?

<p>Bacteria</p> Signup and view all the answers

What is an extra circle of genetic material in some bacteria called?

<p>Plasmid</p> Signup and view all the answers

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Study Notes

Bacterial Shapes

  • Spiral shaped: Spirilla (Example: Campylobacter jejuni)
  • Comma shaped: Vibrios (Example: Vibrio cholerae)
  • Corkscrew shaped: Spirochetes (Example: Treponema pallidium)
  • Round shaped: Cocci
  • Rod shaped: Bacilli

Archaea

  • Single cellular, microscopic organisms
  • Prokaryotes
  • Belong to kingdom Archaebacteria (also known as Archaea)
  • Size: 0.1 to 15 μm in diameter and up to 200 μm long

Characteristics of Archaea

  • Based on habitat, Archaea are divided into:
    • Halophiles: live in salty environments (Example: Halobacterium)
    • Methanogens: methane-producing organisms (Example: Methanococcus)
    • Thermophiles: live in extremely hot temperatures (Example: Alicyclobacillus)
    • Psychrophiles: cold-loving organisms (Example: Listeria monocytogenes)

Characteristics of Micro-organisms

  • Prokaryotes: Bacteria and Archaea
  • Eukaryotes: Protozoa and others
  • Characteristics of Bacteria and Archaea

Eukaryotes vs Prokaryotes

  • Major differences between prokaryotic and eukaryotic cells

Kingdoms and their Characteristics

  • Characteristics of Bacteria, Archaea, and Protozoa

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