Brock Biology of Microorganisms (15th Edition)
Brock Biology of Microorganisms (15th Edition)
15th Edition
ISBN: 9780134261928
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
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Chapter 18.7, Problem 1CR
Summary Introduction

Slime molds belong to group amoebozoa which comes under kingdom Protista. Slime molds are motile and can be categorized into plasmodial slime molds (acellular slime molds) and cellular slime molds. Plasmodial slime molds represent cells which contain masses of indefinite size protoplasm called plasmodium, whereas cellular slime molds represent forms which are of single amoebae type. Dictyostelium and Physarum are two major members of slime molds.

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The internal structure of many protists is much more complexthan that of cells of multicellular organisms. Does thismean that the protist is engaged in more complex activitiesthan the multicellular organism is? If not, why are protistancells more complicated?
Slime molds/moulds or mycetozoans is a broad term that applies to many fungus-like protists. a. In what sense is it appropriate to describe slime molds as “fungus animal”? b. Elaborate on the evolution of the slime molds into two distinct groups.
In the early 1930s, G. F. Gause carried out a series of experiments using two species of ciliated protists (Paramecium), which are single-celled eukaryotic protozoans. The protists were cultured together and separately, with the bacteria being the single food source. The results are shown in the figure below. (a)   Based on figure, identify and explain the interaction that is taking place between P. caudatum and P. aurelia. (b)   Clam shrimp, a natural predator to P. caudatum, is introduced to the culture containing both P. caudatum and P. aurelia after 24 days. Predict the impact that the clam shrimp will have on the culture and the populations. Justify your prediction.

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Brock Biology of Microorganisms (15th Edition)

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