Shared Flashcard Set

Details

Chapter 24-Bacteria
Study for bacteria test
31
Science
10th Grade
02/10/2015

Additional Science Flashcards

 


 

Cards

Term
Eubacteria
Definition
Germs/"true" bacteria
Term

Archeabacteria

Definition

Ancient bacteria

Lack peptidoglycan in cell walls

Unusual lipids in cell membrane

More closely related to eukaryotes

 

Term
Peptidoglycan
Definition

Found in cell wall

Used for gram staining

Large layer, means gram positive

Small layer, means gram negative

Term
Methanogens
Definition

Produce methane

Lives in places such as:

Swamps

Sewages

Intestines

Term
Halophiles
Definition
Lives in salty areas
Term
Thermoacidophiles
Definition
Lives in acidic , hot areas
Term
Three shapes of bacteria
Definition
[image]
Term
Two arrangements of bacteria
Definition

Staph-

[image]

Strep-

[image]

Term
Parts of bacterial cell
Definition
[image]
Term
Plasmid
Definition
Small, self replicating circle of DNA
Term
Pili
Definition

Hair like protein structures on surface

Transfers plasmids

Adheres to host cell

Term
Capsule
Definition

The outercovering of a cell

Holds polysacharides

Protects the cell

Term
Saprophytes
Definition
Bacteria that feed on dead or decaying materials
Term
Photoautotrophs
Definition
Use sunlight (photosynthesis) to get energy
Term
Obligate Anaerobes
Definition
Can not survive near oxygen gases
Term
Obligate Aerobes
Definition
Need oxygen to survive
Term
Facultative Anaerobes
Definition
Can live with or without oxygen
Term
Transformation
Definition

Bacterial cell takes in DNA from the environment

[image]

 

Term
Transduction
Definition

Uses viral vector (virus) to deliver genetic material into a cell. Then the virus takes the DNA from one cell and adds it to another.

[image]

Term
Conjugation
Definition

Two living bacteria bind together and transfer DNA via pili.

[image]

Term
What are the two kingdoms of bacteria? How do they differ?
Definition

The two kingdoms of bacteria are eubacteria and archaebacteria.

  • Eubacteria has peptidoglycan in it's cell wall, while archeabacteria does not.
  • Archeabacteria have unusual lipids in the cell membrane.

 

Term
What are three different types of archeabacteria?
Definition

Methanogens

Halophiles

Thermoacidophiles

Term
What characteristics are used to classify bacteria?
Definition

Shape

Arrangements

Eubacteria or archaebacteria

Gram + or Gram -

How they eat/get energy/where they live

Term

What is a gram stain? 

Why do we use it?

What does it tell us about the bacteria?

Definition

A lab technique used to classify eubacteria.

To tell whether the bacteria is gram + or gram -.

If it is pink (gram +) then the bacteria has a large peptidoglycan layer, while if it is purple (gram -) it has a small peptidoglycan layer.

Term

Describe the structure of a bacteria.

What are the functions of the different peices and parts?

Definition
[image]
Term
What is the difference between a eukaryotic cell and prokaryotic cell?
Definition

A eukaryotic cell has a nucleus (human cells)

A prokaryotic cell does not (bacteria)

Term
In what form is the genetic material of the prokaryote?
Definition
DNA
Term
What types of bacteria live in different nutrition/environments (saprophytes, aerobes, ect)?
Definition
Answered on cards #10-13
Term
What are three different ways that bacteria can transfer genetic material in the form of plasmids from one cell to another?
Definition

Transformation

Transduction

Conjugation

Term
What is antibiotic resistance? Why do we have trouble with it?
Definition

Antibioic resistance is when a cell becomes resistant to our antibiotics (the antibiotics do not affect the bacteria).

This is a problem because more cells are getting resistant and soon we wont have medicine to stop the bacteria from taking over.

Term

What is a virulence factor?

List examples:

Definition

A virulence factor is the measure of pathogenicity of a bacteria (how bad of a pathogen it is).

Bacterial toxins

Cell surface protiens for attatchment

Cell surface carbs/proteins to protect bacteria

Hydrolic enzymes

Supporting users have an ad free experience!