Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Textbook Question
Chapter 1.1, Problem 3MC
The bacteria in figure 1.8 reproduce asexually, yet they are evolving. What is their source of
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Bacteria that live in the digestive systems of cows help break down the plants that cows eat, providing nutrients to cows. The digestive systems of cows offer a safe environment in which the bacteria can live and reproduce. Which type of realationship exist between the bacteria and the cows?
Which of the following does not contribute to genetic variation?
transduction
transformation
conjugation
binary fission
horizontal gene transfer
Which of the processes named here is the LEAST likely to contribute to the evolution of genetic diversity of bacteria and archaea?
Group of answer choices
Horizontal gene transfer
Sexual reproduction
Asexual reproduction
Mutation
Chapter 1 Solutions
Biology: Concepts and Investigations
Ch. 1.1 - Does any nonliving object possess all of the...Ch. 1.1 - Prob. 2MCCh. 1.1 - The bacteria in figure 1.8 reproduce asexually,...Ch. 1.2 - What are the goals of taxonomy?Ch. 1.2 - How are domains related to kingdoms?Ch. 1.2 - Prob. 3MCCh. 1.3 - Identify the elements of the experiment summarized...Ch. 1.3 - Prob. 2MCCh. 1.3 - What is the difference between a hypothesis and a...Ch. 1.3 - Prob. 4MC
Ch. 1.3 - Compare and contrast science and technology.Ch. 1.4 - Prob. 1MCCh. 1.4 - How does this story illustrate discovery science?Ch. 1 - Which of the following is smaller than an...Ch. 1 - All of the following are characteristics of life...Ch. 1 - The concentration of salts in blood remains...Ch. 1 - Because plants extract nutrients from soil and use...Ch. 1 - Evolution through natural selection will occur...Ch. 1 - Prob. 6MCQCh. 1 - In an experiment to test the effect of temperature...Ch. 1 - A scientist has just observed a new phenomenon and...Ch. 1 - Prob. 9MCQCh. 1 - Describe each of the five characteristics of life,...Ch. 1 - Imagine two related species of single-celled...Ch. 1 - Prob. 3WIOCh. 1 - Think of an analogy that will help you remember...Ch. 1 - Other than the examples given in the text name an...Ch. 1 - Draw and explain the relationship between...Ch. 1 - Prob. 7WIOCh. 1 - Prob. 8WIOCh. 1 - How are the members of the three domains similar?...Ch. 1 - List each step of the scientific method and...Ch. 1 - Give two examples of questions that you cannot...Ch. 1 - Prob. 1PITCh. 1 - Prob. 2PITCh. 1 - Prob. 3PIT
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- Horizontal gene transfer is defined as bacteria can acquire genes from other bacteria. new genetic material is produced by sexual reproduction. bacteria can transfer new genes via meiosis. bacteria can transfer new genes via mitosis.arrow_forwardWhat is horizontal gene transfer and how does it relate to evolution?arrow_forwardBacteria have an enormous ability to adapt to new conditions. Which two of the following are they main factors behind this phenomenon? New mutations occur continuously with very high frequency in the genome of bacteria Bacteria generally have small genomes Bacteria have a short generation time The rate of DNA synthesis is very high in bacteria Presence of a selection pressure.arrow_forward
- The graphs show a spectrum of antibiotic-resistant organisms, from 1 to 11, where 1 is the least-resistant and 11 is the most resistant. Notice that before the population replicates (graph on the left), there are no bacteria with resistance 2 or 3, OR 11. But after the population replicates, there are some bacteria with these resistance levels, indicated by the yellow arrows. Which of the following explains the origin of the bacteria pointed at by the yellow arrows? A mutations that happen when the cells in the population replicate their DNA and divide in two B some bacteria just shift one way or the other. C bacteria learn how to become more resistantarrow_forwardHow can horizontal gene transfer influence evolution? Would you be able to detect it using phylogeny? What about horizontal gene transfer makes reading bacterial trees difficult?arrow_forwardAntibiotic resistance is a real concern for the continued existence of humans. Bacteria exchange genes for antibiotic resistance through , leading to large populations of antibiotic individuals. Group of answer choices Vertical Gene Transfer Asexual Reproduction Horizontal Gene Transfer Transfugationarrow_forward
- In one paragraph, using your own words, explain the role that natural selection plays in the growth of antibiotic-resistant strands of bacteria.arrow_forwardExplain why the experimental procedures performed by Lenski (and his lab) caused the fitness of the bacteria to increase over time (especially early on) in all 12 of his populations.arrow_forwardCertain strains of bacteria that were killed by the antibiotic penicillin in the past are now resistant. The probable explanation for this is that the reproductive rate must have increased naturally. a mutation for resistance occurred that was passed on to succeeding generations because it had high survival value. the strains have become resistant because they needed to do so for survival. individual bacteria gradually became tolerant to increasing levels of penicillin over some time.arrow_forward
- What is the serial endosymbiosis hypothesis?arrow_forwardPart A: Which of the following is not a reason that microbes benefit from horizontal gene transfer? cells can acquire useful traits quickly. all new types of DNA are good. genetic diversity is ehanced. All examples are reasons that microbes benefit. Part B:Transposable elements can do all of the following except move from one position to another in a chromosome. cause disruption in genes in which they insert. move from one cell to another. copy themselves, and the copy can insert somewhere else.arrow_forwardWhich of the following statements correctly describes a process by which bacteria become resistant to antibiotics? A. bacteria reproduce slowly, allowing mutation to become widespread in a population. B. some bacteria produce exotoxins that breakdown antibiotics, rendering them nonfunctional C. conjugation spreads antibiotic resistance genes rapidly in a population D. antibiotics cause mutation in bacteria, making them resistant.arrow_forward
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