Mindtap Biology, 1 Term (6 Months) Printed Access Card For Solomon/martin/martin/berg's Biology, 11th
11th Edition
ISBN: 9781337393096
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 13, Problem 18TYU
Summary Introduction
To suggest: The reason why the majority of prokaryotes living today lost most of their introns during the course of evolution.
Introduction: Evolution is a process that introduces heritable changes in a population that passed over generations to generation by any change in frequency of an allele and change in genetic structure. Analysis of DNA by comparing the genome of different species reveals the process of evolution.
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Fossil evidence indicates that prokaryotes have been around for about 3.5 billion years, whereas the origin of eukaryotes has been dated at only about 1.5 billion years ago. Suggest why, in spite of the lesser time for evolution, eukaryotes are much more diverse (have a much larger number of species) than prokaryotes.
In the evolution of the eukaryotic cell, these cells have evolved key changes that include which of the following:
a) These cells reproduce by copying their DNA perfectly each generation
b) They have their DNA in the nucleoid area
c) They have adapted the mesosome membrane system of the prokaryote to form a nucleus and an endoplasmic reticulum
d) each new type of new eukaryote cell has its mRNA unchanged from its original mRNA
e) none of these are true
How did the development of Margulis' theory aid in our understanding of how complex organisms came into existence
Chapter 13 Solutions
Mindtap Biology, 1 Term (6 Months) Printed Access Card For Solomon/martin/martin/berg's Biology, 11th
Ch. 13.1 - Summarize the early evidence indicating that some...Ch. 13.1 - Describe how Beadle and Tatums experiments...Ch. 13.1 - Prob. 1CCh. 13.1 - How did the work of each of the following...Ch. 13.2 - Outline the flow of genetic information in cells,...Ch. 13.2 - Compare the structures of DNA and RNA.Ch. 13.2 - Explain why the genetic code is said to be...Ch. 13.2 - VISUALIZE Sketch a simple flow diagram that shows...Ch. 13.2 - Prob. 2CCh. 13.3 - Compare the processes of transcription and DNA...
Ch. 13.3 - Compare bacterial and eukaryotic mRNAs, and...Ch. 13.3 - In what ways are DNA polymerase and RNA polymerase...Ch. 13.3 - A certain template DNA strand has the following...Ch. 13.3 - What features do mature eukaryotic mRNA molecules...Ch. 13.4 - Identify the features of tRNA that are important...Ch. 13.4 - Explain how ribosomes function in polypeptide...Ch. 13.4 - Prob. 10LOCh. 13.4 - Prob. 11LOCh. 13.4 - What are ribosomes made of? Do ribosomes carry...Ch. 13.4 - What happens in each stage of polypeptide...Ch. 13.4 - A certain mRNA strand has the following nucleotide...Ch. 13.5 - Give examples of the different classes of...Ch. 13.5 - What are the main types of mutations?Ch. 13.5 - Prob. 2CCh. 13.6 - Briefly discuss RNA interference.Ch. 13.6 - Prob. 14LOCh. 13.6 - Prob. 15LOCh. 13.6 - Prob. 1CCh. 13.6 - Prob. 2CCh. 13.6 - Prob. 3CCh. 13 - Prob. 1TYUCh. 13 - What is the correct order of information flow in...Ch. 13 - During transcription, how many RNA nucleotide...Ch. 13 - The genetic code is defined as a series of...Ch. 13 - RNA differs from DNA in that the base...Ch. 13 - Prob. 6TYUCh. 13 - Which of the following is/are not found in a...Ch. 13 - Which of the following is/are typically removed...Ch. 13 - Prob. 9TYUCh. 13 - Suppose you mix the following components of...Ch. 13 - Prob. 11TYUCh. 13 - Prob. 12TYUCh. 13 - Compare and contrast the formation of mRNA in...Ch. 13 - Explain to a friend the experimental strategy that...Ch. 13 - Biologists hypothesize that transposons eventually...Ch. 13 - Prob. 16TYUCh. 13 - Prob. 17TYUCh. 13 - Prob. 18TYU
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- Just as all life shares a last universal common ancestor, all eukaryotes share a last eukaryotic common ancestor (LECA). In considering what LECA was like, scientists look for features and processes common to all or nearly all eukaryotic groups. They assume that these structures emerged before the groups diverged and thus were present in LECA. Make a list of the features and processes that you think might have been passed down from LECA to modern eukaryotes.arrow_forwardHow did the discovery of ribozymes affect our understanding of the origin of life and the RNA world? A) The discovery of ribozymes demonstrated that enzymes did not have to be proteins, and that RNA can store, transmit, and do biological work as an enzymatic molecule. B) The discovery of ribozymes helped us understand why RNA only stores and transmits biological data, but does not act as an enzymatic molecule. C) The discovery of ribozymes verified that enzymes had to be proteins. This discovery helped to eliminate other theories about the origin of life in RNA world. D) The discovery of ribozymes demonstrated definitively that ribozymes function only as an enzymatic molecule and therefore evolved before information carrier molecules.arrow_forwardEvolutionary microbiologists developed a theory about a common ancestor for all eukaryotic cells. Below is a model of the theorized changes during the origin of eukaryotic cells. Prokaryotes are not capable of phagocytosis, or engulfing outside particles by creating a pocket in the cell membrane. Which of the following changes in early prokaryotes could be predicted to result in the emergence of eukaryotic organisms? A - the development of genetic transfer mechanisms in prokaryotes B - the evolution of predatory or parasitic relationships in prokaryotes C - the emergence of collections of cells functioning together in prokaryotes D = the expansion of internal structures to support larger individual cells in prokaryotesarrow_forward
- Researchers 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_forwardExplain why the answer is correct. For eukaryote cells to evolve into new types of eukaryotic organisms, which of the following would one expect to occur? The correct answer is E a) these cells have evolved because they have different DNA because of mutations b) Their endoplasmic reticulum is synthesizing new and/or different proteins. c) These specialized cells activate new genes to synthesize new proteins. d) these organisms have new characteristics because they have acquired new genes. e) all of these are truearrow_forwardThe RNA World Hypothesis suggests that the earliest forms of life used RNA as a genome instead of DNA. Why then do we not see organisms alive today with RNA genomes?arrow_forward
- One of the simplest definitions of a life-form is anything with the capacity to reproduce and regulate itself. Before life began, the complex organic, or hydrocarbon-bearing, molecules that makeup RNA and DNA, the building blocks of life, must have formed. No one knows exactly how life is formed from these molecules, but many ideas have been put forward. As you enter this area, go toward the large video screen on the right and explore the “Life at the hydrothermal Vents” label deck. Some scientists theorize that life begins at deep-sea vents. Find three lines of evidence to support this claim.arrow_forwardThe evolution of eukaryotes was most directly enabled by which of the following? a. Diversification within prokaryotes b. Chemical evolution of organic polymers c. Evolutionary split between prokaryotes and archaea d. Prokaryotic autotrophs increasing atmospheric oxygen e. Decrease of the Earth's surface Which of the following statements is true about ribonucleic acid? I. RNA carries genetic information II. RNA can serve structural and catalytic roles III. Air replicating organisms contain RNA a. I only b. II only c. III only d. I and II only e. I, II, and IIIarrow_forwardHave introns been inserted into genes in the evolution of higher organisms? Or have introns been removed from genes to form the streamlined genomes of prokaryotes and simple eukaryotes?arrow_forward
- We know that bacteria and archaea are very diverse in their metabolic capabilities, such as the consumption of organic waste and carbon dioxide and the creation of others such as oxygen, alcohol, methane, nitrates, and antibiotics. Amazingly these known capabilities only come form the 1-10% of prokaryotes that have been identified. Scientists hypothesize that at least 90% are undiscovered and have potential metabolic capabilities we could harness to benefit human life. If you were a scientist, what metabolic capability of bacteria would you try to discover to solve a human or environmental problem? Why?arrow_forwardIn bacteria, split genes are extremely rare. Have introns been inserted into genes in the evolution of higher organisms?arrow_forwardWhich of the following is/are evidence that mitochondria and bacteria are descendants of bacteria? (Select all that apply.) a) The DNA structure of mitochondria and chloroplasts is similar to that of bacteria b) The DNA sequence of mitochondria and chloroplasts is similar to that of bacteria c) Mitochondria and chloroplasts have their own genomes that are not enclosed in a nuclear envelope. d) MItochondria and chloroplasts have their own ribosomes.arrow_forward
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