Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Chapter 4, Problem 6MCQ
Which of the following is false about fimbriae?
- a. They are composed of protein.
- b. They may be used for attachment.
- c. They are found on gram-negative cells.
- d. They are composed of pilin.
- e. They may be used for motility.
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How do Gram-negative bacteria differ from Gram-positivebacteria?a. They are not pathogenic.b. Their peptidoglycan cell wall is thinner.c. Gram-negative bacteria cannot be Gram stained.d. They possess a single plasma membrane.e. Gram-negative bacteria do not photosynthesize.
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It is not responsible for virulency
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Chapter 4 Solutions
Microbiology: An Introduction
Ch. 4 - DRAW IT Diagram each of the following flagellar...Ch. 4 - Endospore formation is called (a) _____. It is...Ch. 4 - DRAW IT Draw the bacterial shapes listed in (a),...Ch. 4 - Match the structures in column A to their...Ch. 4 - Why is an endospore called a resting structure? Of...Ch. 4 - Compare and contrast the following a. simple...Ch. 4 - Prob. 7RCh. 4 - Starch is readily metabolized by many cells, but a...Ch. 4 - Match the characteristics of eukaryotic cells in...Ch. 4 - NAME IT What group of microbes is characterized by...
Ch. 4 - How can prokaryotic cells be smaller than...Ch. 4 - The smallest eukaryotic cell is the motile alga...Ch. 4 - Two types of prokaryotic cells have been...Ch. 4 - In 1985, a 0.5-mm cell was discovered in...Ch. 4 - When E. coli cells are exposed to a hypertonic...Ch. 4 - Which of the following is not a distinguishing...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which of the following statements best describes...Ch. 4 - Which of the following is false about fimbriae? a....Ch. 4 - Which of the following pairs is mismatched? a....Ch. 4 - Which of the following pairs is mismatched? a....Ch. 4 - You have isolated a motile, gram-positive cell...Ch. 4 - The antibiotic amphothericin B disrupts plasma...Ch. 4 - Clostridium botulinum is a strict anaerobe; that...Ch. 4 - A South San Francisco child enjoyed bath time at...Ch. 4 - Live cultures of Bacillus thuringiensis (Dipel)...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following is NOT true about bacterial endospores? A. They are produced by bacteria of the genus Bacillus and Clostridium B. They are “resting cells” for survival during adverse environmental conditions C. Resistant to desiccation (drying), heat, and chemicals D. Formed by walling off one end of the bacterial cell and surrounding it with a thick spore coat E. They represent a type of reproduction because their formation results in an increase in the number of bacterial cellsarrow_forwardA bacterium has the following characteristics:∙ It adheres to the human intestinal lining using a feature that protects it from phagocytes, bacteriophages, and dehydration∙ It can survive being boiled∙ It contains no plasmids and relatively little peptidoglycanWhich of the following characteristics allows this bacterium to adhere to the intestinal lining? Group of answer choices A. fimbriae B. pili C. an endospore D. a flagellumarrow_forwardA bacterium has the following characteristics: I. It adheres to the human intestinal lining using a feature that protects it from phagocytes , bacteriophages, and dehydration. II. It can survive being boiled. III. It contains no plasmids and relatively little peptidoglycan. Which of the following characteristics allows this bacteria to survive in a human who is taking penicillin pills? A. gram-negative cell wall B. peptidoglycan in the cell wall C. lipopolysaccharides in the cytoplasm D. long polypeptides in the cell wallarrow_forward
- Which of the following statement about the bacterial cell wall is INCORRECT? a. The cell wall is relatively nonpermeable and restricts the passage of sugars and amino acids. b. Gram-positive cells have more peptidoglycan in theircell walls than Gram-negative cells. c. Gram-negative cells have a membrane both inside andoutside their cell walls. d. The cell wall establishes a bacterium’s shape as a coccus,bacillus, or spirillum.arrow_forwardWhich of the following is the mechanism of motility for amebas? A.Flagella B. Cilia C.Pseudopods D. Fimbriaarrow_forward4) Which of the following statements is TRUE? A) Fimbriae are generally longer and less numerous than flagella. B) Fimbriae are involved in genetic exchange between cells. C) Hami are common in Bacteria but not found in Archaea. D) Fimbriae are usually shorter than flagella, whereas pili are involved in genetic exchange.arrow_forward
- A microbe that is completely dependent on host cells for processes like transcription and translation” would describe which of the following? Select one: a. An intracellular protist parasite. b. A virus. c. A commensal bacterium. d. An intracellular bacterial pathogen. poiling yourself, you decide to eat at a fancy fish restaurant. One type of fish must be prepared carefully to remove a toxin that can cause paralysis. What type of channel is the toxin likely to affect? Select one: a. Voltage. b. Terminal. c. Mechanical. d. Positive.arrow_forward1. Describe the structure and function of the bacterial cell wall, and explain its importance as a target for antibiotics. 2. Explain the Gram-negative envelope structure and the role of lipopolysaccharides (LPS) in pathogenesis. Describe the functions of a cell membrane. 3. 4. Explain how nutrients are transported and how energy is spent to drive transport. 5. Describe the cell wall structure, and explain how it protects bacteria from osmotic shock. 6. Explain the arrangement and function of the Gram-positive cell wall and teichoic acids. 7. Explain the arrangement and function of the Gram-negative outer membrane, LPS, and periplasm. 8. Describe how DNA is organized within the bacterial cell.arrow_forwardWhich of the following is present in both gram-positive and gramnegativecell walls?a. an outer membrane. c. teichoic acidb. peptidoglycan d.lipopolysaccharidesarrow_forward
- Which of the following is NOT a true statement about bacterial structure and function? A. Bacteria can have membrane-enclosed organelles such as mitochondria or chloroplasts B. Bacteria have a single circular chromosome made of double-stranded DNA C. Bacterial cell walls are made of a substance called peptidoglycan D. Bacterial flagella rotate to propel the cell E. Some bacteria have a capsule surrounding the cell, made of a sticky polysaccharide or proteinarrow_forwardFor bacteria to infect cells, it produces an extracellular protease that destroys tissue structure particularly transmembrane proteins. The bacteria are grown in culture so that the protease can be isolated. Then the culture is centrifuged. In which sample would the protease be most likely found? A. Precipitate containing whole bacteria B. Cell-free filtrate; that is, the supernatant C. The lysate of the whole culture D. Lysed bacteria only E. All of thesearrow_forwardDescribe the cross - section side view of a Gram - negative cell . Clearly state where the following would be located or write the letters in order of appearance from the outside to the inside . If any of these structures are not present , make sure to leave them out . A ) peptidoglycan ; ( B ) periplasm ; ( C ) porin ; ( D ) LPS ; ( E ) teichoic acids ; ( F ) plasma membrane : ( G ) outer membrane : ( H ) nucleoidarrow_forward
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