Microbiology: An Introduction (13th Edition)
13th Edition
ISBN: 9780134605180
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case, Derek Weber, Warner Bair
Publisher: PEARSON
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Chapter 11, Problem 1MCQ
If you
- a. gram-positive cocci.
- b. gram-negative rods.
- c. gram-positive, endospore-forming rods.
- d. gram-negative, nitrogen-fixing bacteria.
- e. all of the above
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Match each group of bacteria with its best description.
high G+C bacterial
low G+C bacteria
nonproteobacteria
Proteobacteria
deeply branching bacterial
A. many thrive at high temperatures and in harsh environments; believed to
similarities with ancient bacteria
B. gram-positive group that includes the
Actinobacteria
C. gram-positive group that includes the Bacilli
D. "gram-negative bacteria including the spirochetes,
E. large group of gram-negative
GFC group, and planctomy
bacteria that includes five diverse classes
The bacterium Bacillus anthracis was stained with gram staining, endospore staining, acid-stain staining and capsule staining. What result would you expect to see?
a. none of these answers
b. gram positive, endospore negative, acid-fast negative, capsule positive
c. gram negative, endospore positive, acid-fast positive, capsule negative
d. gram positive, endospore positive, acid-fast negative, capsule positive
e. gram negative, endospore positive, acid-fast negative, capsule negative
thank you!!
Which of the following is present in both gram-positive and gramnegativecell walls?a. an outer membrane. c. teichoic acidb. peptidoglycan d.lipopolysaccharides
Chapter 11 Solutions
Microbiology: An Introduction (13th Edition)
Ch. 11 - The following outline can be used to identify...Ch. 11 - Compare and contrast each of the following: a....Ch. 11 - DRAW IT Draw a key to differentiate the following...Ch. 11 - Prob. 4RCh. 11 - If you Gram-stained the bacteria that live in the...Ch. 11 - Which of the following does not belong with the...Ch. 11 - Prob. 3MCQCh. 11 - Prob. 4MCQCh. 11 - Which of the following terms is the most specific?...Ch. 11 - Which one of the following does not belong with...
Ch. 11 - Which of the following pairs is mismatched? a....Ch. 11 - Prob. 8MCQCh. 11 - When Legionella was newly discovered, why was it...Ch. 11 - Prob. 10MCQCh. 11 - Prob. 1ACh. 11 - Prob. 2ACh. 11 - Bacteria are single-celled organisms that must...Ch. 11 - After contact with a patients spinal fluid, a lab...Ch. 11 - Between April 1 and May 15 of one year. 22...Ch. 11 - Prob. 3CAE
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- The structures that enable some Gram-positive bacteria to remaindormant for extremely long periods of time are known asa. akinetes. b. endospores. c. biofilms. d. lipopolysaccharide envelopes. e. pili.arrow_forwardWhich of the following is present in both gram-positive and gramnegativecell walls?a. an outer membrane c. teichoic acidb. peptidoglycan d. lipopolysaccharidesarrow_forwardThe broth culture of Bacillus subtilis showed growth even after extended heating in a waterbath, while Serratia marcescens did not. This is due to: a. Bacillus subtilis is Gram-positive, while Serratia marcescens is Gram-negative b. Bacillus subtilis is a spore former c. the pigment of Serratia marcescens absorbs more radiation than other cells d. Bacillus subtilis has enzymes that protect it from ozonearrow_forward
- A 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_forwardWhich of the following is TRUE regarding Gram negative bacteria? a- Their cell wall is composed of a large proportion of sugars b- Their cell wall does not absorb the Gram stain and turns pink c- Their cell wall is composed of a small proportion of peptidoglycan d- Two of the above statements are truearrow_forwardIn an experiment Staphylococcus, streptococcus and enterococcus are bacteria that are stained dark blue/violet by Gram stain. Which statement is False? a. all are gram-positive bacteria 15 b. all are Gram-negative bacteria c. all are spherical bacteria d. all are prokaryotic cells e. all can cause a diseasearrow_forward
- Which one of the following statements about the Gram stain is false? A-In the Gram stain, a dye called crystal violet is used to stain the cells purple. B-Gram positive cells end up being stained purple. C-Gram negative cells have thinner peptidoglycan layers than Gram positive bacteria. D-In the Gram stain, alcohol is used to kill the bacteria E-Gram negative cells end up being stained pink or red.arrow_forwardHow 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.arrow_forwardThe genera Streptococci and Staphylococci are important bacterial groups to study as they contain many human pathogens. In the following question, choose whether the stated characteristic is typical of either Streptococci, Staphylococci, or both by bolding or highlighting the correct choice. Choose One a. Gram-positive cocci bacteria Streptococci, Staphylococci, Both b. Can withstand higher osmotic pressure Streptococci, Staphylococci, Both c. Principle pathogen is S. pyogenes Streptococci, Staphylococci, Both d. MRSA pathogen Streptococci, Staphylococci, Both e. B-hemolytic pharyngitis (throat infection) Streptococci, Staphylococci, Botharrow_forward
- Which of the following is NOT true about gram-positive and gram-negative bacteria? a. None of the other four answers (all are true) b. Gram-negatives have thicker cell walls than gram-positives c. Cell walls are made of peptidoglycan in both gram-positives and gram-negatives d. Peptidoglycan has a carbohydrate (NAG/NAM) backbone cross-linked by chains of amino acids e. Gram-negatives have an outer membrane outside of the cell wall, composed of lipopolysaccharidearrow_forwardIdentify the genus that best fits each of the following descriptions: a. This organism can produce a fuel used for home heating and for generating electricity. b. This gram-positive genus presents the greatest source of bacterial damage to the beekeeping industry. c. This gram-positive rod is used in dairy fermentations. d. This gammaproteobacterial genus is well suited to degrade hydrocarbons in an oil spill.arrow_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
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