Microbiology: Principles and Explorations
9th Edition
ISBN: 9781118743164
Author: Jacquelyn G. Black, Laura J. Black
Publisher: WILEY
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Textbook Question
Chapter 6, Problem 12SQ
Which of the following statements about endospores is true?
- (a) Endospore formation in some bacteria occurs because of environmental stressors such as a limiting nutrient or extremes in pH.
- (b) Endospore formation in bacteria is a means of reproduction.
- (c) Endospore formation occurs in Bacillus, Clostridium, and a few other Gram-positive genera.
- (d) When favorable conditions are restored, endospores undergo germination or development into a vegetative cell.
- (e) a, c, and d.
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Which of the following is NOT true about endospores?
O 1) Spores are resistant to heat, radiation, cold, and dessication.
O 2) One endospore germinates into one vegetative cell.
O
3) They are a method of reproduction for bacterial cells when growth conditions
are inhospitable.
O 4) Endospores are clinically significant in causing disease.
O 5) The endospore has a thick spore coat that protects it.
Some groups of bacteria can go dormant during periods of environmental stress through the formation of _______.
A) magnetosomes
B) peptidoglycan
C) endospores
D) pili
Which of the following is typically found in aquatic bacteria, especially among phototrophic types, and used for positioning in the water column
A) O gas vesicle
B) O sulfur granules
C) O nanotubules
D) Oglycogen
E) O metachromatic granules
Chapter 6 Solutions
Microbiology: Principles and Explorations
Ch. 6 - What are the differences between the lag phase and...Ch. 6 - How does logarithmic rate of increase differ from...Ch. 6 - Prob. 1.3SCCh. 6 - Why does a direct microscopic count of bacteria...Ch. 6 - What does the ending -phile mean? Distinguish...Ch. 6 - What enzymes do most obligate anaerobes lack? How...Ch. 6 - Prob. 2.3SCCh. 6 - Prob. 3.1SCCh. 6 - Distinguish between the various kinds of media:...Ch. 6 - What is the purpose of a stock culture? Why is it...
Ch. 6 - Prob. 1CCSCh. 6 - Exactly 100 bacteria with a generation time of 30...Ch. 6 - In the above example, do you think that the number...Ch. 6 - Prob. 3CTQCh. 6 - Prob. 1SQCh. 6 - Match the following growth phase terms to their...Ch. 6 - Which of the following is the best definition of...Ch. 6 - Prob. 4SQCh. 6 - The most probable number (MPN) technique is a...Ch. 6 - Match the terms with their definitions:Ch. 6 - Prob. 7SQCh. 6 - Why do foods containing a high concentration of...Ch. 6 - Some bacteria have complex nutritional...Ch. 6 - Prob. 10SQCh. 6 - Which type of cell will shift to aerobic...Ch. 6 - Which of the following statements about endospores...Ch. 6 - Prob. 13SQCh. 6 - Blood agar is often used to observe changes in the...Ch. 6 - A bacterial medium that contains 20 grams of beef...Ch. 6 - MacConkey agar contains the dye, crystal violet,...Ch. 6 - Prob. 17SQCh. 6 - What are the purposes of carrying out the streak...Ch. 6 - Prob. 19SQCh. 6 - During quorum sensing, bacteria sense their...Ch. 6 - Prob. 21SQCh. 6 - Identify the position of each of the following on...
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Prokaryotic vs. Eukaryotic Cells (Updated); Author: Amoeba Sisters;https://www.youtube.com/watch?v=Pxujitlv8wc;License: Standard youtube license