Lecture 1/2 - Introduction to Bacteria Flashcards
What is PCR?
Polymerase Chain Reaction
How does PCR relate to Koch’s postulates?
Isolation of microbe along with identification
What is the ID based on when PCR is used?
NA amplification
Amplification of gene sequences
Sequence must be KNOWN!
What is a pro to using PCR?
Growth in pure culture is not needed.
What are the two components to a bacteria’s name?
Genus + Species
What is another component to the name of some bacteria?
Serotype
What are the categories for bacterial morphology?
Size
Shape
Arrangement of cells
What is the average range when it comes to the size of a bacteria?
0.2 to 2.0 um in diameter
What is the order (small to large) of the following:
Bacillus - Spirochete - Coccus
Coccus - Bacillus - Spirochete
Describe coccus.
Spheres/round
Describe bacillus.
Rod
Describe vibrio.
Curved rod
What are the two subtypes of spiral?
Spirillum + Spirochete
Describe Spirillum.
Rigid, sprial-shaped rod
Describe spirochete.
Flexible, thin, spiral-shaped rod
Describe coccobacillus.
Short rod
What is pleomorphic?
One species but several different kinds of shapes
What type of bacteria are arrangements most likely to describe?
Coccus
What is strepto?
Chain
Describe staphylo?
Grape-like cluster
What are the three major parts to the cell envelope of a bacteria?
Glycocalyx + Cell wall + Cytoplasmic membrane
What are the two things that a glycocalyx can form?
Capsule + Slime layer
What is the glycocalyz made from?
Polysaccharides + glycoproteins
Where is the glycocalyx located?
Outside of the cell wall