What is the general shape of bacteria? Pls help me fast...icse buddy????
Answers
Explanation:
Bacteria are prokaryotic, unicellular microorganisms, which lack chlorophyll pigments. The cell structure is simpler than that of other organisms as there is no nucleus or membrane bound organelles.
Due to the presence of a rigid cell wall, bacteria maintain a definite shape, though they vary as shape, size and structure.
When viewed under light microscope, most bacteria appear in variations of three major shapes: the rod (bacillus), the sphere (coccus) and the spiral type (vibrio). In fact, structure of bacteria has two aspects, arrangement and shape. So far as the arrangement is concerned, it may Paired (diplo), Grape-like clusters (staphylo) or Chains (strepto). In shape they may principally be Rods (bacilli), Spheres (cocci), and Spirals (spirillum).
Size of Bacterial Cell
The average diameter of spherical bacteria is 0.5-2.0 µm. For rod-shaped or filamentous bacteria, length is 1-10 µm and diameter is 0.25-1 .0 µm.
Answer:
The three most known basic bacterial shapes are the coccus (spherical), bacillus (rod-shaped), and spiral (twisted), though pleomorphic bacteria can have several shapes.
Explanation:
- Cocci (or coccus for a single cell) are generally round cells, sometimes slightly flattened as well when they are adjacent to each another.
- Bacilli (or bacillus for a single cell) are like rod-shaped bacteria.
- Spirilla (or spirillum for a single cell) are curved bacteria that can range from a gently curved shape to a corkscrew-like spiral shape. Many spirilla are rigid and capable of moving. A special group of spirilla known as spirochetes are long, slender, and flexible.
Structure of bacteria has two forms, arrangement and shape. So far as the arrangement is taken into consideration, it may be Paired (diplo), Grape-like clusters (staphylo) or Chains (strepto). In shape they may principally be Rods (bacilli), Spheres (cocci), and Spirals (spirillum).