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Biology of Microorganisms
Exam 1 chapter 3.
8
Microbiology
Undergraduate 2
09/11/2011

Additional Microbiology Flashcards

 


 

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Term

Fundemental Traits of Prokaryotes

part 1.

Definition
Thick, complex, outer envelope. The envelope protects the cell from enviromental stress and predators. It also mediates echange with the enviroment and communication with other organisms.
Term

Traits of Prokaryotes

Part 2.

Definition

Compact Genome

Prokaryotic genomes are compact, with relatively little noncoding DNA. Small genomes maximize the production of cells from limited resources.

Term

Traits of Prokaryotes

Part 3.

Definition

Tightly coordinated cell functions.

The cell's sub-cellular parts work together in a highly coordinate mechanism. Coordinate action enables high reproduction rate.

Term
Cell Membrane (or inner membrane for gram-negative cell)
Definition
The membrane is composed of phospholipids, hydrophobic proteins, and other molecules.
Term
Cell Membrane Function
Definition
The membrane prevetns cytoplasmic proteins from leaking out and maintains gradients of ions and nutrients.
Term
Cell wall
Definition
A rigid structure composed of polysaccharides linked covalently by peptides (peptidogylcan). the cell wall forms a single cage-like molecule that surrounds the cell.
Term
Peptidoglycan
Definition
A polymer of sugars and peptides
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