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?
In the pictures below, identify the arrowed reproductive structures of microscopic cyanobacteria based on the following descriptions: Akinetes are dormant structures larger than the vegetative cells, are rich in food reserves, and have thick walls.  Most filamentous cyanobacteria develop akinetes in adverse conditions (e.g., winter, dry periods).  When favorable conditions return, they germinate and produce new filaments. Hormogonia are short pieces of filaments consisting of 5–15 trichomes that fragment and develop into new filaments. Heterocytes (or heterocysts) are multicellular structures that have a thick and massive sheath, formed by members of the Nostocales.  It is the location of the enzyme nitrogenase for nitrogen fixation, the conversion of nitrogen gas into ammonium and then amino acids.  They may be intercalary or terminal in position and may germinate from either end or both the ends to give rise to new filaments. Non-filamentous cyanobacteria generally produce spores…
Clapter 4. Define and identify properties of biofilms Familiarize yourself with the following structures and what purpose(s) they se o Glycocalyx (both slime layer and capsule) Fimbriae o Flagella, distinguish the different flagella arrangements axial filament sex pili cell wall plasma membrane inclusions ribosomes plasmids nucleoid chromosome o endospores What characteristics distinguish the Domain Archaea and Domain Bacteria? Regarding cellwall hp O o 0 O O 0 0 o

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Brock Biology of Microorganisms (15th Edition)

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