Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 24, Problem 11TYU
Summary Introduction
To explain:
How the small size and high reproductive rate of bacteria results in a big population and high
Concept introduction:
Bacteria are unicellular, prokaryotic organism. They are one of the earliest forms of life on Earth. They reproduce asexually through binary fission. Due to their unicellularity and property to divide into two daughter cells, they are considered to be biologically immortal.
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Consider two species of bacteria A and B with the same initial population. The species grow exponentially with growth rate
rA = 0.05 for species A and rg =
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(Enter YES or NO)
The time at which they reach the same size is t =
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Chapter 24 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 24.1 - What hypothesis did Miller test in his classic...Ch. 24.1 - How would the appearance of protocells have...Ch. 24.1 - Prob. 3CCCh. 24.1 - Prob. 4CCCh. 24.2 - Contrast the cellular and DNA structures of...Ch. 24.2 - Distinguish between the four major modes of...Ch. 24.2 - Prob. 3CCCh. 24.2 - Prob. 4CCCh. 24.3 - Although rare on a per gene basis, new mutations...Ch. 24.3 - Distinguish between the three mechanisms by which...
Ch. 24.3 - In a rapidly changing environment, which bacterial...Ch. 24.3 - WHAT IF? If a nonpathogenic bacterium were to...Ch. 24.4 - Explain how molecular systematics and metagenomics...Ch. 24.4 - WHAT IF? What would the discovery of a bacterial...Ch. 24.5 - Explain how prokaryotes, though small, can be...Ch. 24.5 - Prob. 2CCCh. 24.5 - Prob. 3CCCh. 24.5 - Prob. 4CCCh. 24 - Which of the following steps has not yet been...Ch. 24 - Fossilized stromatolites A. more than 2.8 billion...Ch. 24 - Prob. 3TYUCh. 24 - Photoautotrophs use A. light as an energy source...Ch. 24 - Which of the following statements is not true? A....Ch. 24 - Prob. 6TYUCh. 24 - Plantlike photosynthesis that releases O2 occurs...Ch. 24 - SCIENTIFIC INQUIRY INTERPRET THE DATA The...Ch. 24 - FOCUS ON EVOLUTION In patients infected with...Ch. 24 - FOCUS ON ENERGY AND MATTER In a short essay (about...Ch. 24 - Prob. 11TYU
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- The following graph shows the trends in bacteria and viruses after they infect an organism. Part A: Explain how reproductive differences between these two pathogens attribute to the differences shown in the graph. Identify whether viruses are organisms and describe how this graph supports your claim. Part B: Most antibiotics target the cell wall of a pathogen. Use the graph to explain why antibiotics can be ineffective against some pathogens.arrow_forwardMicrobiomes can be characterized using a number of molecular biology approaches. Which approach would provide a better functional description of a community: metagenomic or metatranscriptomic sequencing? Briefly explain your reasoning.arrow_forward. This flowchart helps distinguish among organisms by asking questions that have one of two possible answers. As a result, this flowchart can also be called a dichotomous key (from Greek dikho- 'in two' + temnein 'to cut'). Complete the flowchart by properly placing these genera: Bacillus, Corynebacterium, Escherichia, Mycobacterium, Neisseria, and Staphylococcus. You may need to look up additional information about these genera. Gram reaction Rod-shaped Negative Coccus-shaped Rod-shaped Positive Coccus-shaped Acid-fast Not acid-fast Spore-former No sporesarrow_forward
- How well do you think bioremediation achieves the goal of cleaning up pollution?Support you answer with evidence about the success of genetic technology in manipulating bacterial characteristics, and historical facts about.arrow_forwardConsider the fact that the use of 16S rRNA sequencing as a taxonomic and phylogenetic tool has resulted in tripling the number of bacterial phyla. Why has the advent of this genetic technique expanded the currently accepted number of microbial phyla?arrow_forwardconsider the following terms: Envelope Fusion Gene therapy Pathogen Vaccine Capsule Decomposer Epidemic Mold Spore Yeast Choose 2 terms from the list and answer the following questions for each term: What familiarity and prior knowledge do you have about the term? What does the term mean in everyday language to everyday people? Use examples to help describe your thoughts. How do people use the word? What does the term mean in technical language to biologists? How is the term related to the course student learning outcome: Describe classifications of biological diversity? What are the similarities and differences between the everyday and technical meanings and uses of the term? What impact might the similarities and differences have on your learning of biology concepts in this course?arrow_forward
- Describe the relationship between the original bacteria kingdom called monera and the domain called bacteria.arrow_forwardGive correct typing answerarrow_forwardBacteria are by far the most numerous organisms on earth. Some estimates indicate that the total biomass of bacteria is larger than that of all plants and animals, despite their tiny size. However, biologists' knowledge of bacteria is very uneven. In some ways, biologists know more about certain bacteria than we do about most animals, including humans. In other ways, biologists still know very little about bacteria and the Bacteria Kingdom. For example, there might be about a million species of bacteria, or there could be billions of different species. Think about benefits and complications related to the biological study and knowledge of bacteria. What are some ways in which bacteria are very well-known and/or easy to study? What are some ways in which bacteria are very poorly-known and/or difficult to study (other than the total number of species). Discuss how this relates to technology, other developments in biological research, and/or characteristics of the bacteria…arrow_forward
- What is an original research? Do you think the following are ideas that may be considered as original? Support your answer with logical reasons in each case : a. Investigation of size of bacterial cells b. Evaluation of impact of CO2 on the environment c. Diversity of microorganisms in the fields of Kohat University d. Investigation of new compounds in a bacterial culture e. Application of a strain of bacteria you isolated from the soil as PGPRarrow_forwardThe white lines drawn indicate different lineages of bacteria throughout the experiment. The black arrows on the y-axis indicate three horizontal regions of increasing antibiotic concentration — low, medium, and high. Describe what the different groups of colored circles represent in the image to the right and explain how they differ. What has occurred to make them different? Recall that “fitness” in evolution refers to the number of offspring that survive to reproduce in a particular environment. Which group of bacteria, light brown (A) or light blue (B), has the higher fitness as depicted in this image? Explain your selection.arrow_forwardQuorum sensing is one of the coolest things we've learned about this semester, because it is one way that bacterial cells can actually communicate with each other. Which are true about Quorum Sensing? (Choose all that apply.) Group of answer choices Quorum sensing depends on the sensing of signal protein molecules. Quorum sensing is a synonym for biofilms. Quorum sensing allows bacteria to monitor their own population density. Quorum sensing is present almost exclusively in non-pathogenic bacteria and does not contribute to virulence.arrow_forward
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