Unit 5 Bacterial morphology and structure Flashcards
Bacteria is prokaryote or eukaryote?
Prokaryote
Viruses are eukaryotes or prokaryote?
NONE, It is acellular
Bacteriophage is prokaryote or eukaryote?
NONE, It is acellular
Does prokaryote have a nuclear membrane?
No
How many chromosome has a prokaryote?
1
Does eukaryote have a nuclear membrane?
Yes
Does eukaryote have chromosome?
Yes a lot
Does eukaryote contain mitochondria?
Yes
Does prokaryote contain mitochondria?
No
Does prokaryote contain golgi apparatus?
No
Does eukaryote contain golgi apparatus?
Yes
Does eukaryote contain endoplasmic reticulum?
Yes
Does prokaryote contain endoplasmic reticulum?
No
Does eukaryote contain ribosomes?
Yes
Does prokaryote contain ribosomes?
Yes
How many ribosomes does eukaryote have?
80S
How many ribosomes does prokaryote have?
70S
Does eukaryote have a cell wall?
No
Does prokaryote have a cell wall?
Yes
Does eukaryote have sterols? Where is it located?
Yes, in plasma membrane
Does prokaryote have sterols? Where is it located?
No
How eukaryote do cell division?
Mitosis
How prokaryote do cell division?
Binary fission
Where is the mitochondria located?
In cytoplasm of eukaryote
Where is golgi apparatus located?
In cytoplasm of eukaryote
Where is endoplasmic reticulum located?
In cytoplasm of eukaryote
Where are located the ribosomes?
In cytoplasm of eukaryote AND prokaryote
How is DNA organized in prokaryote?
DNA organized in a single chromosome
NO nucleus
How is DNA organized in eukaryote?
DNA organized in multiple chromosomes inside a nucleus
What are the mitosis steps?
1) Prophase
2) Prometaphase
3) Metaphase
4) Anaphase
5) Telophase
6) Interphase
What is the binary fission?
It the way of division of prokaryote.
The chromosome is duplicated inside the cell, then the cell is divided into 2 cells with own chromosome.
What is the size of the bacteria?
micrometre
µm = 1x10‐6 m
What is the size of the virus?
nm = 1x10‐9 m
What are the different shape for a bacteria?
Coccus
Bacillus –> coccobacillus
–> vibrio
Spirillum
What does coccus mean?
It is a bacteria’s shape.
It’s roughly spherical.
What does Spirillum mean?
It’s a bacteria’s shape.
It’s curviform or spiral-shape.
What does coccobacillus mean?
It’s a bacteria’s shape.
It’s short and plump.
What does vibrio mean?
It’s a bacteria’s shape.
It’s gently curved.
What does bacillus mean?
It’s a bacteria’s shape.
It’s rod-shaped.
(Forme de baton)
What does pleomorphism and for which cell is it?
It’s for bacteria.
It means when cells of a single species vary to some extent in shape and size.
The bright-field microscope is used for what?
To see stained cells
Easy to use
The dark-field microscope is used for what?
To see living cells that would be distorted by drying or heat or that cannot be stained with the usual methods.
The phase-contrast microscope is used for what?
To see internal components.
The fluorescence microscope is used for what?
To see immunofluorescence
Auramine O staining
The electron microscope is used for what?
To see detailed structure of cells and virus.
Does microbe have a specific color?
Most microbes are colorless.
