Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 27.3, Problem 2CC
A bacterium requires only the amino acid methionine as an organic nutrient and lives in lightless caves. What mode of nutrition does it employ? Explain.
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Flasks A and B contain broth, and are inoculated with an identical number of bacteria that are facultative anaerobes. Flask A contains a triglyceride lipid as the sole nutrient source, and Flask B contains a monosaccharide called fructose as the sole nutrient source. Both flasks are incubated at 30°C with aeration (oxygen is added to the broth). Assume the bacteria are capable of catabolism of both fructose and triglycerides.
Mark all the correct statements pertaining to these cultures.
A. Under anaerobic conditions, cells in flask A will produce more ATP
B. Cells from flask B will produce more carbon dioxide
C. Cells from flask B will produce more ATP
D. Flask A will have the greater cell mass
E. Cells from flask A will produce more ATP
F. Cells from flask A will produce more carbon dioxide
G. Flask B will have the greater cell mass
H. Under anaerobic conditions, cells in flask B will produce more ATP
Pseudomonas bacteria have porin proteins, are resistant to the chemical triclosan, and survive and can even multiply in quaternary ammonium compounds.
True or False?
A bacterial organism is used to inoculate mannitol broth medium. Following incubation the broth is yellow. This indicates that the organism:
A) can use lactose and glucose
B) cannot use lactose
C) can use mannitol
D) cannot use mannitol
Chapter 27 Solutions
Campbell Biology
Ch. 27.1 - Describe two adaptations that enable prokaryotes...Ch. 27.1 - Contrast the cellular and DNA structures of...Ch. 27.1 - Prob. 3CCCh. 27.2 - Although rare on a per gene basis, new mutations...Ch. 27.2 - Distinguish between the three mechanisms by which...Ch. 27.2 - In a rapidly changing environment, which bacterial...Ch. 27.3 - Distinguish between the four major modes of...Ch. 27.3 - A bacterium requires only the amino acid...Ch. 27.3 - WHAT IF? Describe what you might eat for a...Ch. 27.4 - Explain how molecular systematics and metagenomics...
Ch. 27.4 - Prob. 2CCCh. 27.5 - Explain how prokaryotes, though small, can be...Ch. 27.5 - MAKE CONNECTIONS Review Figure 10.6. Then...Ch. 27.6 - Identify at least two ways that prokaryotes have...Ch. 27.6 - Prob. 2CCCh. 27.6 - Prob. 3CCCh. 27 - Describe features of prokaryotes that enable them...Ch. 27 - Mutations are rare and prokaryotes reproduce...Ch. 27 - Describe the range of prokaryotic metabolic...Ch. 27 - How have molecular data informed prokaryotic...Ch. 27 - In what ways are prokaryotes key to the survivaI...Ch. 27 - Prob. 27.6CRCh. 27 - Genetic variation in bacterial populations cannot...Ch. 27 - Photoautotrophs use (A) light as an energy source...Ch. 27 - Which of the following statements is not true? (A)...Ch. 27 - Prob. 4TYUCh. 27 - Prob. 5TYUCh. 27 - Prob. 6TYUCh. 27 - Prob. 7TYUCh. 27 - SCIENTIFIC INQUIRY INTERPRET THE DATA The...Ch. 27 - WRITE ABOUT A THEME: ENERGY In a short essay...Ch. 27 - SYNTHESIZE YOUR KNOWLEDGE Explain how the small...
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- Which of the following is NOT characteristic of the glycocalyx found in bacteria? Select one: A) a structure that can be visualized using an acidic negative stain and a basic counterstain B) creates a slimy, slippery coating that prevents bacteria from attaching to surfaces C) if firmly attached, contributes to bacterial virulence D) a viscous coating surrounding the cell made of polysaccharide, polypeptide, or botharrow_forwardyou grew streak plates of Clostridium sporogenes under both aerobic and anaerobic conditions. Which plates showed bacterial growth, and what does the zone around the metronidazole disc represent? Additionally, explain what types of bacterial growth metronidazole affects and why.arrow_forwardWhich of the following factors does NOT help cells survive and grow well in an AEROBIC environment? a) Superoxide Dismutase b) Catalase c) Peroxidase d) Hydroxyl radicals e) Thioglycolatearrow_forward
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