Chapter 3 terms Flashcards
Are all unicellular and lack a membrane bound nucleus.
Prokaryotes
The ability to take on different forms.
Pleomorphic
Cells with a rod or cylindrical shape.
Bacilli
Cells with a spherical shape.
Cocci
Cells with a comma shape.
Vibrio
Cells with a star shape.
Stella
Cells with a Ovid shape
Coccobacilli
When some cocci divide to produce a pairing of cells it is known as..
Diplococaal arrangement.
Longer chains of of spherical cells are known as..
Streptococci
When cocci divide to form a. grape like cluster of cells there are said to have..
Staph
A process simpler then mitosis, which is the form of asexual cell division that most eukaryotic cells use.
Binary fission
All cells whether they are prokaryotic or eukaryotic, are surrounded by an outer boundary.
Plasma membrane
A cell wall that lies just outside of the plasma membrane in most prokaryotic cells, fungi, plants some other organisms; animal cells lack a cell wall
Cell Wall
Bacteria uses this mesh like molecule includes protein and sugar units and is a core component of their cell wall.
Peptidoglycan
Between the peptidoglycan layer and the outer membrane is a gap filled with a gel like fluid that I enriched with various factors that have important roles in helping the bacterium obtain nutrients and neutralize potentially toxic substances.
Periplasmic space
The outer membrane along with a thin peptidoglycan later in their cell walls is..pink
Gram negative
Bacteria lack outer membranes and have a thick peptidoglycan layer in their cell walls..purple
Gram positive
Acid-fast staining technique detects a way lipid in cell walls known as..
Mycolic acid
Movement in response to chemicals.
Chemotaxis
Movement in response to light.
Phototaxis
Movement in response to oxygen.
Aerotaxis
A shorts bristle like structure that extrude from the cell surface. Made of protein, they tend to be numerous and cover the cell.
Fimbriae
Similar to fimbriae, except that they tend to be longer more rigid and less numerous. They are used to adhere to surfaces, move and aid in gene transfer through conjugation.
Pili
