Loose Leaf Version for Biology: Concepts and Investigations
4th Edition
ISBN: 9781260152128
Author: Mariëlle Hoefnagels Dr.
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Question
Chapter 17, Problem 6MCQ
Summary Introduction
Introduction:
Toxins are poisonous chemicals synthesized by the cells to protect themselves. Toxins are of two kinds, endotoxins and exotoxins. Endotoxins are a part of bacterial structure while exotoxins are released into the surroundings.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
In his work with pneumonia-causing bacteria andmice, Griffith found that(A) the protein coat from pathogenic cells wasable to transform nonpathogenic cells.(B) heat-killed pathogenic cells causedpneumonia.(C) some substance from pathogenic cells was transferred tononpathogenic cells, making them pathogenic.(D) the polysaccharide coat of bacteria causedpneumonia.
The effect of antibiotics on micro organismsis mainly due to
a. Inhibition of cell-wall synthesis
b. Damage to the cytoplasmic membrane
c. Inhibition of nucleic acid and protein synthesis
d. AOTA
In the human body, Escherichia coli (a normally harmless bacterium) can be found in the: a. mouth b. digestive tract c. pancreas d. cilia e. kidneys
Chapter 17 Solutions
Loose Leaf Version for Biology: Concepts and Investigations
Ch. 17.1 - What are two domains that contain prokaryotes?Ch. 17.1 - Prob. 2MCCh. 17.1 - Prob. 3MCCh. 17.1 - Why are most species of prokaryotes little...Ch. 17.2 - Prob. 1MCCh. 17.2 - Prob. 2MCCh. 17.2 - What does the Gram stain reveal about a cell?Ch. 17.2 - Prob. 4MCCh. 17.2 - How are molecular data changing microbial...Ch. 17.2 - Prob. 6MC
Ch. 17.3 - Prob. 1MCCh. 17.3 - Prob. 2MCCh. 17.3 - Prob. 3MCCh. 17.4 - Prob. 1MCCh. 17.4 - Prob. 2MCCh. 17.4 - What adaptations enable pathogenic bacteria to...Ch. 17.4 - What are some practical uses of bacteria and...Ch. 17.5 - Prob. 1MCCh. 17.5 - Prob. 2MCCh. 17 - A prokaryotic cell is one that a. lacks DNA. b....Ch. 17 - Which of these is a distinguishing characteristic...Ch. 17 - What feature distinguishes the cell walls of...Ch. 17 - What type of organism may use inorganic chemicals...Ch. 17 - Prob. 5MCQCh. 17 - Prob. 6MCQCh. 17 - Prob. 7MCQCh. 17 - Prob. 8MCQCh. 17 - Explain why the antibiotics penicillin and...Ch. 17 - Why do some microbiologists disagree with...Ch. 17 - Give five examples that illustrate how bacteria...Ch. 17 - If you were developing a new "broad-spectrum"...Ch. 17 - Describe your own metabolic classification: Are...Ch. 17 - A prokaryote with which type of metabolism would...Ch. 17 - Ernst Mayr defined a biological species as a...Ch. 17 - Why did the discovery of archaea generate interest...Ch. 17 - In an article in Nature magazine, Sean Nee wrote...Ch. 17 - Ecosystems rely on nitrogen -fixing bacteria,...Ch. 17 - Prob. 11WIOCh. 17 - Prob. 12WIOCh. 17 - Prob. 13WIOCh. 17 - Prob. 14WIOCh. 17 - Prob. 15WIOCh. 17 - Mycobacterium tuberculosis causes most cases of...Ch. 17 - Prob. 1PITCh. 17 - Add autotrophs, heterotrophs, phototrophs, and...Ch. 17 - Prob. 3PITCh. 17 - Create a new concept map that includes the...Ch. 17 - Prob. 4PITCh. 17 - Prob. 6PIT
Knowledge Booster
Learn more about
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 mechanism of antibiotic resistance is most likely to result in "cross resistance" against multiple antibiotic drugs resulting in the development of "superbugs"? a. Modification of drug target b. Enzyme deactivation of drug c. Efflux pumps d. Blocking entry of drug into the cellarrow_forwardMany viruses enter host cells through receptor-mediated endocytosis, What is an advantage of this entry strategy? A. The virus directly enters the cytoplasm of the cell B The virus only enters its target host cell type. C. The virus is protected from recognition by white blood cells. D. The virus can directly inject its genome into the cell's nucleus.arrow_forwardThe Golden Age of Microbiology was the time whena) microorganisms were first used to make bread.b) microorganisms were first used to make cheese.c) most pathogenic bacteria were identified.d) a vaccine against influenza was developed.e) antibiotics became available.arrow_forward
- Which of the following refer/s to viruses? A. They are disease-causing. B. They contain DNA or RNA. C. They must have protection for their own genetic material. D. They are parasitic. A, B, C only A, B, C, D A, C, D B, C, Darrow_forwardWhich of the following statements correctly describes exotoxins and endotoxins produced by various bacteria? A. endotoxins are secreted into the environment while the bacteria are still alive B. exotoxins are secreted into the environment while the bacteria are still alive C. exotoxins are only released into the environment when the bacteria die and their cell walls break down D. exotoxins are components of the outer membrane of the bacteria that produce themarrow_forwardWhy are Pseudomonas aeruginosa infections difficult to treat? A. Because they form biofilms, which are difficult for antibiotics to penetrate. B. Because they have a special endotoxin that degrades many antibiotics. C. Because we do not have any antibiotics that target P. aeruginosa. D. Because they are gram-positive bacteria, which are harder to treat.arrow_forward
- An antibiotic is: a- A disease causing microorganism. b- A protein that inactivates a foreign substance by bonding to its surface. c- A white blood cell that engulfs and destroys disease causing microorganisms. d-A chemical that inhibits the growth of or destroys certain microorganismsarrow_forwardBacteriophages and animal viruses do NOT differ significantly in which one of the following steps ? A.) attachment B.)uncoating C.) biosynthesis D.) penetrationarrow_forwardSelect a statement that is not true about bacteria A. Some bacteria cause human disease B. Some bacteria are autotrophs C. Bacteria can be found within rocks kilometers below the Earth’s surface D. All organisms with cells containing a membrane-enclosed nucleus and organelles are eukaryotes, whereas all organisms with cells lacking a membrane-enclosed nucleus and organelles are bacteriaarrow_forward
- Which of the following best describes the mechanism of action of the antibiotic streptomycin? A. it disrupts protein synthesis in resistant bacteria. B. Streptomycin inhibits cell wall synthesis in all bacterial species. C. Streptomycin creates mutations in bacteria which cause them to become resistant. D. It disrupts protein synthesis in nonresistant bacteria.arrow_forwardthe largest population of bacteria live within the _____________. a. large intestine b. stomach c. esophagus d. small intestinearrow_forwardGenetic variation in bacterial populations cannotresult from(A) transduction.(B) conjugation.(C) mutation.(D) meiosis.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Basic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:Cengage
Basic Clinical Lab Competencies for Respiratory C...
Nursing
ISBN:9781285244662
Author:White
Publisher:Cengage
Bacterial Infections in Humans; Author: Professor Dave Explains;https://www.youtube.com/watch?v=FeFKAl9KyMg;License: Standard Youtube License