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18 Jan 2019

Which of the following characteristics of living organisms absolutely disqualifies viruses as alive?

A. Reproduction

B. Ability to move

C. Utilizing energy

D. Evolutionary adaptation

E. Cellular organization

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Tod Thiel
Tod ThielLv2
20 Jan 2019

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Related questions

1.All living organisms alive today are assumed to have evolved from some one-celled ancestor that lived about four billion years ago and has been called the Last Universal Common Ancestor or LUCA. LUCA has been extinct for a long time but evolutionary biologists have hypothesized as to what it was like. Given the characteristics of modern prokaryotic and eukaryotic organisms, what cellular characteristics would you suggest that LUCA had? What type of cellular respiration might LUCA have used? Why?

2. Why is water so essential for biological life? Provide examples as to how water is used in living systems.

1. Which of the following is generally a passive process?

a. Inhalation c. Gas exchange

b. Exhalation d. All of the above

2. All living things on earth are characterized by cellular organization, growth reproduction, and heredity. These

characteristics serve to define the term “life”. Other properties commonly exhibited by organisms include movement and

sensitivity to stimuli. Which of the following conditions is a sufficient criterion to define life?

a. reproduction c. sensitivity

b. growth d. All of these

3. Cilia which are hair-like processes found on free surfaces of

certain cells originate from:

a. endoplasmic reticulum c. microtubules

b. centrioles d. cell membrane

Characteristics of Living Things (50 points)

Living things share 8 characteristics (listed in Chapter 1 of your textbook on page 19). A living thing grows, undergoes metabolism, responds to its environment, reproduces, passes DNA to the next generation, maintains homeostasis, changes over time, and is made up of cells. A non-living thing may seem to do one or more of these things, but to be classified as living; all eight characteristics must be present. Sometimes, you may see something that seems alive but is not. Though you can’t see it, you have likely experienced it; one of those things is a virus.

Answer BOTH of the following questions:

Using all 8 of the characteristics that define life, indicate which one(s) viruses have and which one(s) they do not, and explain each difference.

With these results, present an argument that a virus is a living thing. Then, present the opposite argument that viruses are not alive.

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