Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 6, Problem 17TYK
Summary Introduction
To review:
Whether DNA (deoxyribonucleic acid) evolved first or the protein, after the evolution of RNA (ribonucleic acid).
Introduction:
DNA and RNA are the most important
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Which of the following schemes for molecular informationflow never occurs?(a) DNA → rRNA(b) DNA → tRNA(c) DNA → mRNA(d) RNA → DNA(e) mRNA → protein(f) DNA → protein
If nitrogenous bases (A, G, C, T or U) could polymerize to chains of nucleotides, could this eventually form the structure shown in the figure above? Would an RNA structure that can act as an enzyme, such as the one shown above, have been the result of chemical evolution with competition between replicating RNA molecules? Or was it likely the first RNA molecule that arose from a chain of nitrogenous bases could immediately act as an enzyme?
How does DNA analysis help scientists better understand evolution?
It spells out the amino acids that make up an organism.
It helps chart changes in amino acid sequences over time.
It shows us what codons an organism has.
It shows us an organism’s genome sequence.
Chapter 6 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 6.1 - Prob. 1SBCh. 6.1 - In thermodynamics, what is meant by an isolated...Ch. 6.2 - Prob. 1SBCh. 6.2 - Prob. 2SBCh. 6.2 - Distinguish between exergonic and endergonic...Ch. 6.3 - Prob. 1SBCh. 6.3 - How are coupled reactions important to cell...Ch. 6.4 - How do enzymes increase the rates of the reaction...Ch. 6.4 - Can enzymes alter the G of a reaction?Ch. 6.5 - Prob. 1SB
Ch. 6.5 - What is the difference between competitive and...Ch. 6.5 - Prob. 3SBCh. 6.6 - Prob. 1SBCh. 6 - The capacity to do work best defines: a metabolic...Ch. 6 - The assembly of proteins from amino acids is best...Ch. 6 - When two glucose molecules react to form maltose:...Ch. 6 - When glucose reacts with ATP to form...Ch. 6 - In the following graph: A represents the product....Ch. 6 - Which of the following methods is not used by...Ch. 6 - In an enzymatic reaction: a. the enzyme leaves the...Ch. 6 - Which of the following statements about the...Ch. 6 - Which of the following statements about inhibition...Ch. 6 - Which of the following statements is incorrect? a....Ch. 6 - Prob. 11TYKCh. 6 - Discuss Concepts Trace the flow of energy through...Ch. 6 - Prob. 13TYKCh. 6 - Prob. 14TYKCh. 6 - Prob. 15TYKCh. 6 - Prob. 16TYKCh. 6 - Prob. 17TYKCh. 6 - Prob. 1ITDCh. 6 - Prob. 2ITDCh. 6 - Prob. 3ITD
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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.Similar questions
- In a discussion about the origin of life, one student argued that RNA molecules must have come before DNA molecules. What is the most likely rationale for this argument? RNA can both store genetic information and catalyze chemical reactions, which are necessary for self-replication. RNA is more stable than DNA, making it more suitable for early life forms. RNA can replicate faster than DNA, enabling rapid evolution. RNA can translate genetic information into proteins, whereas DNA cannot.arrow_forwardIf RNA played a key role in the origin of life,why do cells now use DNA for information storage and proteins to carry out other cellular processes?arrow_forwardWhat are the implications of cellular and molecular biology for spontaneous generation and the hypothesis of evolution? Just write in a simple way (easy to understand), no need to be long (just a short paragraph)arrow_forward
- Is gene transfer a form of eugenics? Is it advantageous to use gene transfer to eliminate some genetic disorders? Can this and other technology be used to influence the evolution of our species? Should there be guidelines for the use of genetic technology to control its application to human evolution? Who should create and enforce these guidelines?arrow_forward1) In one paragraph, explain in your opinion, Why do you think the Theory of Evolution is so controversial? 2) In one paragraph, explain in your opinion, discuss your own ideas and also those that you can find by researching online.arrow_forwardEven though they have several differences, a bacterium and a human cell will both contain DNA. With respect to evolution, what does this fact suggest?arrow_forward
- Which of the following statements privdes the best evidence that there is a common genetic code that demonstrates the unity of life? A) Bees, birds, and bats all have the wings and fly B) Many insects can pllinate only a particcular speices of plant ldue to many generations of evolutionary adaptation C) Bacteria, muschrooms, and cats all have DNA D) Through genetic engineering, a gene from a firefly can be inserted into a bacterium to make it glowarrow_forwardTheodosius Dobzhansky wrote “Nothing in biology makes sense except in the light of evolution.” What did he mean by this? How does evolution unify the biological sciences? What other principles might do so?arrow_forwardResearchers have reported advances in their attempts to synthesize life from scratch in a test-tube—bringing non-living matter to life. In the lab, they have been able to produce ‘protocells’ from fatty molecules that can spontaneously trap pieces of nucleic acids that possess the code for replication and metabolism. With continued progress, protocells may be synthesized that form self-replicating, evolving system that satisfy the conditions of life. Consider the scientific understanding that may be generated from this project. What scientific questions might the knowledge generated from this project help answer? Reflect on the broader significance of this work. What objections might be raised about this line of research?arrow_forward
- Consider Lamarck’s idea in a hypothetical situation. For example, you decided that when you have children, you want them to be big ang strong. You decided to go to the gym every day for a year. You did all your exercise routines diligently and you were able to develop really bulky and toned muscles because you believed that your kids would inherit your big impressive muscles. Do you think this would work? Justify your answer using the concepts you have learned from Genetics, as well as Darwin’s concept of evolution.arrow_forwardScience fiction movies have been known to sketch out a world of the near-future where terrible things have happened such as the evolution of antibiotic resistance in flesh-eating bacteria. What might we reasonably say about this topic? (Select all that apply) A - While one can have fun with entertaining stories about evolution (including ones that are very plausible), this is not a good reason to fund research on antibiotics because that is a solved medical problem. B - It has already happened with some early antibiotics (like penicillin)-the only reason we are momentarily okay is the continued development of additional antibiotics. C - In principle, it is possible but evolution takes millions of years, so don't expect it in the near-future. D - The bodies of humans have evolved since the discovery of antibiotics such that they are less and less effective already. E - We shouldn't find antibiotic resistance to be evidence for evolution because it is only a science-fiction story: it…arrow_forwardsome people may argue that evolution is simply a theory. how will you defend the theory of evolution as a biologist?arrow_forward
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