1. What is life? Why are viruses not considered alive by some people? What other things can you think of that are not alive but might be almost alive?
1. What is life? Why are viruses not considered alive by some people? What other things can you think of that are not alive but might be almost alive?
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,...
Related questions
Question
Transcribed Image Text:1. What is life? Why are viruses not considered alive by some people? What other things can
you think of that are not alive but might be almost alive?
2. What is the last universal common ancestor (LUCA), and what does that mean? What is a
phylogenetic event horizon?
3. Why does there appear to have been only one origin of life on earth? Why are there not
multiple origins? Why is life not originating still?
4. What is the origin (or origins) f viruses? Is there evidence that viruses have multiple origins?
5. What were conditions like on Earth when life first began? Be thorough here. What was the
prebiotic soup like? How might these conditions have varied across the planet? Do we expect
that these conditions might be replicated on other planets?
6. What do meteorites tell us about potential life on other planets and whether life on Earth
was influenced by these meteorites?
7. How might mineral clay surfaces have influenced the origin of life?
8. Why do we think that LUCA was RNA-based rather than DNA?
9. What is the potential importance of horizontal gene transfer in the evolution of early life?
10. What functions are most critical for cells? What do minimal gene sets tell us about early
life? Describe efforts to determine minimal gene sets and cell functions. How do they compare
among species?
1
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 5 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:
9780815344322
Author:
Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:
W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education