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You inoculate a culture into a test tube containing broth and take it out of the

You inoculate a culture into a test tube containing broth and take it out of the

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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### Determining the Type of Bacteria Based on Growth When you inoculate a culture into a test tube containing broth and take it out of the incubator the next day, you observe the culture is growing equally throughout the broth. This indicates a specific type of bacteria. Based on these observations, you can conclude the nature of the bacterial culture. Select the option that best describes this type of bacterial growth: - **Aerobic:** These bacteria require oxygen to grow and would typically be found growing near the surface of the broth where oxygen concentration is highest. - **Facultative Anaerobe:** These bacteria can grow with or without oxygen. They may use oxygen when it is available but can also grow in its absence. Therefore, they could grow throughout the broth. - **Anaerobic:** These bacteria do not require oxygen for growth and may even be killed by exposure to oxygen. Such bacteria would grow at the bottom of the broth. - **Aerotolerant:** These bacteria do not use oxygen but are not harmed by its presence and would grow throughout the broth. - **Microaerophilic:** These bacteria require oxygen but at lower concentrations than what is present in the atmosphere and would typically be found growing just below the surface of the broth. Given that the culture is growing equally throughout the broth, the likely conclusion is that it could be either a facultative anaerobe or an aerotolerant bacterium.
Transcribed Image Text:### Determining the Type of Bacteria Based on Growth When you inoculate a culture into a test tube containing broth and take it out of the incubator the next day, you observe the culture is growing equally throughout the broth. This indicates a specific type of bacteria. Based on these observations, you can conclude the nature of the bacterial culture. Select the option that best describes this type of bacterial growth: - **Aerobic:** These bacteria require oxygen to grow and would typically be found growing near the surface of the broth where oxygen concentration is highest. - **Facultative Anaerobe:** These bacteria can grow with or without oxygen. They may use oxygen when it is available but can also grow in its absence. Therefore, they could grow throughout the broth. - **Anaerobic:** These bacteria do not require oxygen for growth and may even be killed by exposure to oxygen. Such bacteria would grow at the bottom of the broth. - **Aerotolerant:** These bacteria do not use oxygen but are not harmed by its presence and would grow throughout the broth. - **Microaerophilic:** These bacteria require oxygen but at lower concentrations than what is present in the atmosphere and would typically be found growing just below the surface of the broth. Given that the culture is growing equally throughout the broth, the likely conclusion is that it could be either a facultative anaerobe or an aerotolerant bacterium.
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