ACCESS IN MOODLE ROOMS
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ISBN: 9780135333457
Author: Pearson
Publisher: PEARSON
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Chapter 1, Problem 3AQ
Imagine that all microorganisms suddenly disappeared from Earth. From what you have learned in this chapter, why do you think that animals would eventually disappear from Earth? Why would plants disappear? By contrast, if all higher organisms suddenly disappeared, what in Figure 1.5a tells you that a similar fate would not befall microorganisms?
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Chapter 1 Solutions
ACCESS IN MOODLE ROOMS
Ch. 1.1 - In what ways are microorganisms important to...Ch. 1.1 - Why are microbial cells useful for understanding...Ch. 1.1 - What is a microbial colony and how is one formed?Ch. 1.1 - What are bacterial colonies and how are they...Ch. 1.2 - What structures are universal to all types of...Ch. 1.2 - Prob. 2MQCh. 1.2 - What structures can be used to distinguish between...Ch. 1.2 - Prob. 1CRCh. 1.3 - How old is Earth and when did cells first appear...Ch. 1.3 - Prob. 2MQ
Ch. 1.3 - Why were cyanobacteria so important in the...Ch. 1.3 - Prob. 1CRCh. 1.4 - Prob. 1MQCh. 1.4 - Prob. 2MQCh. 1.4 - Prob. 3MQCh. 1.4 - Prob. 1CRCh. 1.5 - Define the terms magnification and resolution.Ch. 1.5 - Prob. 2MQCh. 1.5 - Prob. 1CRCh. 1.6 - Prob. 1MQCh. 1.6 - Prob. 2MQCh. 1.6 - How can cells be made to fluoresce?Ch. 1.6 - Prob. 1CRCh. 1.7 - Prob. 1MQCh. 1.7 - Prob. 2MQCh. 1.7 - Prob. 1CRCh. 1.8 - Prob. 1MQCh. 1.8 - Prob. 2MQCh. 1.8 - Prob. 1CRCh. 1.9 - Prob. 1MQCh. 1.9 - Prob. 2MQCh. 1.9 - Besides ending the controversy over spontaneous...Ch. 1.9 - Explain the principle behind the Pasteur flask in...Ch. 1.10 - How do Kochs postulates ensure that cause and...Ch. 1.10 - What advantages do solid media offer for the...Ch. 1.10 - Prob. 3MQCh. 1.10 - Prob. 1CRCh. 1.11 - What is meant by the term enrichment culture?Ch. 1.11 - Prob. 2MQCh. 1.11 - What were the major microbiological interests of...Ch. 1.12 - Describe the experiments that proved DNA was the...Ch. 1.12 - Why are microbial cells useful tools for basic...Ch. 1.12 - Describe the experiments that proved DNA to be the...Ch. 1.13 - What kinds of evidence support the three-domain...Ch. 1.13 - What is a phylogenetic tree?Ch. 1.13 - List three reasons why rRNA genes are suitable for...Ch. 1.13 - What insights led to the reconstruction of the...Ch. 1.14 - How are viruses different from Bacteria, Archaea,...Ch. 1.14 - What four bacterial phyla contain the most...Ch. 1.14 - Prob. 3MQCh. 1.14 - What features (or lack of features) can be used to...Ch. 1 - Pasteurs experiments on spontaneous generation...Ch. 1 - Describe the lines of proof Robert Koch used to...Ch. 1 - Imagine that all microorganisms suddenly...
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- Which of the following is an example of a symbiotic pair of organisms? Question 3 options: A) elk and deer B) algae and yeast C) orchid and mycorrhizae D) Escherichia coli and Rhizobiumarrow_forwardHow does the emergence of endosymbiotic theory change the way humans view microorganisms? Will people be comfortable imagining that the life functions of plants and animals, including their own, are actually dependent on the coexistence of many different microscopic pieces? This question is not answered yetarrow_forwardImagine a sealed terrarium containing a plant and a beetle. How does each organism provide resources for the other? Could each organism survive if it was the only living thing in the terrarium? Why or why not?arrow_forward
- Fungi (as well as bacteria and various animals) are major decomposers. What would the world be like if there were no decomposers of any kind?arrow_forwardMicrobial mats __________. a. are the earliest forms of life on Earth b. obtained their energy and food from hydrothermal vents c. are multi-layered sheets of prokaryotes including mostly bacteria but also archaea d. all of the abovearrow_forwardImagine that all microorganisms suddenly disappeared fromEarth. From what you have learned in this chapter, why doyou think that animals would eventually disappear fromEarth?arrow_forward
- Autotrophs are bacteria that obtain their energy through a-The Sun b-Dead organic material c-Chemical reactions d-The production of methanearrow_forwardChoose one prokaryote (bacteria or archaea) AND one protest. You can choose a species or more general taxonomic group of interest. Then address the following questions for each. 1. What does the organism look like? Describe or include an image. 2. How does it obtain energy? 3. How does it reproduce? 4. What are its close relatives in the tree of life? 5. Why is it important from a human perspective?arrow_forwardWhat did the biology experiments on the Viking landers discover? A. Although Mars's soil is chemically active, it does not contain obviously active micro-organisms. B. The soil on Mars has much more microbial life in it than a typical soil on the Earth does. C. Small, nearly microscopic plants are common in the Martian soil. D. Although there does not appear to be life on Mars today, the soil is full of microscopic fossils.arrow_forward
- Many of today's antibacterial drugs work by interfering with the growth of cell walls. Why do these drugs tend to have little toxicity to human cells?arrow_forwardAntibiotics are a form of medicine used to treat bacterial infections. However, new bacteria are evolving that are resistant to antibiotics. When someone uses antibiotics, they often contribute in a small way to an increase in the number of bacteria that are resistant to antibiotics. How would an economist classify antibiotic use? Public health officials are concerned with the overuse of antibiotics, which leads to bacteria being resistant to antibiotics. What is a solution to this problem?arrow_forwardMicrobial mats. are the earliest forms of life on Earth obtained their energy and food from hydrothermal vents are multi-layered sheets of prokaryotes including mostly bacteria but also archaea all of the abovearrow_forward
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