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Questions and Answers
A scientist discovers a new unicellular organism. Initial observations reveal it has a diameter of 5µm, lacks sterols in its plasma membrane, and reproduces via binary fission. This organism is MOST likely a:
A scientist discovers a new unicellular organism. Initial observations reveal it has a diameter of 5µm, lacks sterols in its plasma membrane, and reproduces via binary fission. This organism is MOST likely a:
- Bacterium. (correct)
- Eukaryotic cell undergoing asexual reproduction.
- Virus.
- Eukaryotic cell with a modified cell wall.
Which characteristic is LEAST useful when differentiating between species of bacteria?
Which characteristic is LEAST useful when differentiating between species of bacteria?
- Chemical composition (detected by staining)
- Mode of reproduction (correct)
- Nutritional requirements
- Morphology (shape)
A researcher is studying a newly discovered prokaryote that thrives in an environment devoid of sunlight. Which of the following energy sources would this organism MOST likely utilize?
A researcher is studying a newly discovered prokaryote that thrives in an environment devoid of sunlight. Which of the following energy sources would this organism MOST likely utilize?
- Inorganic chemicals
- Photosynthesis
- Organic compounds
- Both B and C (correct)
A bacterial cell is treated with a compound that disrupts the synthesis of peptidoglycan. Which cellular structure will be MOST affected by this treatment?
A bacterial cell is treated with a compound that disrupts the synthesis of peptidoglycan. Which cellular structure will be MOST affected by this treatment?
Why is the presence or absence of sterols in the plasma membrane significant when classifying microorganisms?
Why is the presence or absence of sterols in the plasma membrane significant when classifying microorganisms?
Flashcards
Prokaryotes
Prokaryotes
Single-celled organisms lacking a nucleus or other membrane-bound organelles; includes Bacteria and Archaea.
Binary Fission
Binary Fission
A method of asexual reproduction in bacteria, where the cell divides into two identical daughter cells.
Bacterial Differentiation
Bacterial Differentiation
Bacteria are differentiated based on their morphology, chemical composition, nutritional needs, biochemical activities, and energy source.
Bacterial Cell Wall
Bacterial Cell Wall
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Cyanobacteria
Cyanobacteria
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