The Cosmic Perspective Fundamentals (2nd Edition)
2nd Edition
ISBN: 9780133889567
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 15, Problem 4QQ
Choose the best answer to each of the following Explain your reasoning.
The three key requirements for life are a source of nutrients a source of energy, and (a)H2o in some form (b)a liquid such a liquid water(c)DNA
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Which of the following seems least reasonable regarding life on Earth?
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There is much scientific evidence suggesting that all creatures living on Earth today appear to have evolved from a common ancestor.
Louis Pasteur discredited the concept of spontaneous generation by demonstrating that even bacteria and other microorganisms arise from parents resembling themselves.
There is ample physical evidence that the earliest life forms on Earth were multicellular creatures, perhaps resembling some of our primitive fish.
When the earth formed some 4.6 billion years ago, it was a lifeless, inhospitable place.
Before the mid-17th century, most people believed that God had created humankind and other higher organisms and that insects, frogs, and other small creatures could arise spontaneously in mud or decaying matter
About billion years into its development, the Earth it was teeming with organisms resembling blue-green algae.
Which of the following statements about the "tree of life" is correct?
Before Carl Woese, all cellular life forms were classified into five kingdoms: Monera, Fungi, Plants, Animals, and Protists.
Using rRNA genes for phylogenetic reconstruction, Carl Woese uncovered a previously unrecognized group that was thought to be bacteria. Afterward, all cellular life forms were classified into three domains: Archaea, Bacteria, and Eucarya.
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All of the above
Give a Claim and Evidence to each question.5. Is there a possibility that Physics in the context of Entropy help in the explanation of emergenceof life?
Chapter 15 Solutions
The Cosmic Perspective Fundamentals (2nd Edition)
Ch. 15 - Choose the best answer to etch of the following....Ch. 15 - Choose the best answer to etch of the following ....Ch. 15 - Choose the best answer to each of the following...Ch. 15 - Choose the best answer to each of the following...Ch. 15 - Choose the best answer to each of the following...Ch. 15 - Choose the best answer to each of the following...Ch. 15 - Choose the best answer to each of the following...Ch. 15 - Choose the best answer to each of the following...Ch. 15 - Choose the best answer to each of the following...Ch. 15 - Choose the best answer to each of the following...
Ch. 15 - Choose the best answer to each of the following...Ch. 15 - Choose the best answer to etch of the following....Ch. 15 - Explain all answers clearly, with complete...Ch. 15 - Explain all answers clearly, with complete...Ch. 15 - Explain all answers clearly, with complete...Ch. 15 - Explain all answers clearly, with complete...Ch. 15 - Explain all answers clearly, with complete...Ch. 15 - Prob. 18SEQCh. 15 - Explain all answers clearly, with complete...Ch. 15 - Prob. 20SEQCh. 15 - Explain all answers clearly, with complete...Ch. 15 - Explain all answers clearly, with complete...
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- The DNA in a single cell in your body contains about 4.5 billion base pairs. Imagine building a model of that DNA like a ladder with base pairs for rungs. If you make the rungs 1 inch apart, how long will the ladder be? Express your answer in miles.arrow_forwardIf life is based on information, what is that information?arrow_forwardWhat are two characteristic properties of life that distinguish it from nonliving things?arrow_forward
- can you imagine life without electricity? what would you be our if there is no advancement in technology like motors and generators?arrow_forwardPut in order the organization levels for life: Organs→ - Organisms Populations :: Tissues :: Ecosystems : Organ systems : Cells : Communities 1 2 3 4 5 6 7 Support | Schoology Blog | PRIVACY POLIarrow_forwardWhat is nanotechnology? Make a timeline on the development of nanotechnology. What are the uses and applications of nanotechnology? What are the tools of nanotechnology? Enumerate possible setbacks on using nanotechnology. What do think are the impacts of nanotechnology on Kindly answer all please. Thank youarrow_forward
- 404 Sum It Up! When you're done, use the answer key to check and revise your work. Match each picture to its description. Omnivores are consumers that eat both plants and animals. 2 B Carnivores and omnivores that hunt and eat other animals are also called predators. 3 Plants make food through the process of photosynthesis. Summarize The idea web below summarizes the lesson. Complete the web. Roles of Organisms Camivores are consumers that makes food for itself and other animals. Bacteria ares. The number of predators tends to rise that break down dead matter and wastes. when there is a rise in the number of 484arrow_forwardIn this chapter, we identify these characteristic properties of life: life extracts energy from its environment, and has a means of encoding and replicating information in order to make faithful copies of itself. Does this definition fully capture what we think of as “life”? How might our definition be biased by our terrestrial environment?arrow_forwardTutorial A radio broadcast left Earth in 1925. How far in light years has it traveled? If there is, on average, 1 star system per 400 cubic light years, how many star systems has this broadcast reached? Assume that the fraction of these star systems that have planets is 0.30 and that, in a given planetary system, the average number of planets that have orbited in the habitable zone for 4 billion years is 0.85. How many possible planets with life could have heard this signal? Part 1 of 3 To figure out how many light years a signal has traveled we need to know how long since the signal left Earth. If the signal left in 1925, distance in light years = time since broadcast left Earth. d = tnow - tbroadcast d = light years Submit Skip (you cannot come back)arrow_forward
- Tutorial A radio broadcast left Earth in 1923. How far in light years has it traveled? If there is, on average, 1 star system per 400 cubic light years, how many star systems has this broadcast reached? Assume that the fraction of these star systems that have planets is 0.50 and that, in a given planetary system, the average number of planets that have orbited in the habitable zone for 4 billion years is 0.40. How many possible planets with life could have heard this signal? Part 1 of 3 To figure out how many light years a signal has traveled we need to know how long since the signal left Earth. If the signal left in 1923, distance in light years = time since broadcast left Earth. d = tnow - broadcast d = 97 97 light years Part 2 of 3 Since the radio signal travels in all directions, it expanded as a sphere with a radius equal to the distance it has traveled so far. To determine the number of star systems this signal has reached, we need to determine the volume of that sphere. V, = Vb…arrow_forwardObjects deep beneath the surface of the ocean are subjected to extremely high pressures, as we saw in Chapter 9. Some bacteria in these environments have adapted to pressures as much as a thousand times atmospheric pressure. How might such bacteria be affected if they were rapidly moved to the surface of the ocean?arrow_forwardLife on Earth exists because of oxygen in Earths atmosphere. True or false? Explain your answer.arrow_forward
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