BIOLOGY
4th Edition
ISBN: 9781266739606
Author: Hoefnagels
Publisher: MCG
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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.
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Which 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 them
Symptoms of viral infections are caused by:
(choose all that apply)
A. Actions of the virus that result in cell damage or death
B. Actions of the immune system that result in cell damage or death
C. Changes in a cell's genetics that result in cancer
endotoxins are:
a. excreted from within the cell
b. specific in their method of actino depending on the particular endotoxin
c. associated with gram-positive bacteria
d. part of a particular type of cell wall copmosed os lopolusaccharides
e. none of the above
Chapter 17 Solutions
BIOLOGY
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
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