Suppose living organisms were to be found on Mars. How might such a nd shed light on the origin and evolution of life on Earth? • Besides mitochondria and chloroplasts, what other kinds of entities with cells might have evolved from endosymbionts? • What might be the advantages of flagellar motility for a hyperthermophil living in a thermal spring or in a black smoker vent? What would be the advantages of growth in a biofilm? Why would yeasts remain unicellular? What are the relative advantages and limitations of hyphae? Why does ruminant fermentation leave food value for the animal host?

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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Suppose living organisms were to be found on Mars. How might such a fi
nd shed light on the origin and evolution of life on Earth?
• Besides mitochondria and chloroplasts, what other kinds of entities within
cells might have evolved from endosymbionts?
• What might be the advantages of flagellar motility for a hyperthermophile
living in a thermal spring or in a black smoker vent? What would be the
advantages of growth in a biofilm?
Why would yeasts remain unicellular? What are the relative advantages
and limitations of hyphae?
Why does ruminant fermentation leave food value for the animal host?
How is the animal able to obtain nourishment from waste products that the
microbes could not use?
The nitrogen cycle has to be linked with the carbon cycle, since both
contribute to biomass. How might the carbon cycle of an ecosystem be
affected by increased input of nitrogen?
Transcribed Image Text:Suppose living organisms were to be found on Mars. How might such a fi nd shed light on the origin and evolution of life on Earth? • Besides mitochondria and chloroplasts, what other kinds of entities within cells might have evolved from endosymbionts? • What might be the advantages of flagellar motility for a hyperthermophile living in a thermal spring or in a black smoker vent? What would be the advantages of growth in a biofilm? Why would yeasts remain unicellular? What are the relative advantages and limitations of hyphae? Why does ruminant fermentation leave food value for the animal host? How is the animal able to obtain nourishment from waste products that the microbes could not use? The nitrogen cycle has to be linked with the carbon cycle, since both contribute to biomass. How might the carbon cycle of an ecosystem be affected by increased input of nitrogen?
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