how do bacterial cells differ from animal cells??
Answers
Explanation:
Bacterial Cell /Animal Cell
1.It does not have a well-defined, membrane-enclosed nucleus./ It contains a well-defined membrane-enclosed nucleus.
2It does not have cell organelles. Membrane-bound cell organelles are present in the cytoplasm.
It is much smaller in size than an animal cell, e.g. 0.2 to 10 micron in size. It is larger than a bacterial cell, e.g. 100 microns or more.
3It has a well-defined cell wall. /It lacks the cell wall.
4They are generally autotrophs and maybe heterotrophs. /They are always heterotrophs.
5They reproduce asexually by binary fission and sexually by conjugation. /They can reproduce asexually by mitosis and sexually by meiosis.
6It has plasmids (circular DNA in the cytosol)./ It lacks the plasmids. It has well-defined linear DNA in the nucleus.
7It has a single chromosome. /It has many chromosomes.
8It does not have mitochondria./ It has mitochondria in the cytoplasm.
9It has well-defined cell shape. It has irregular shapes as it lacks the cell wall.
10Some bacteria have fimbria on the cell surface./ It lacks fimbria.
11It lacks the cytoskeleton./ It has cytoskeleton (a network of filaments and tubules in the cytoplasm).
12It lacks histone proteins. /Its DNA is wrapped around histone proteins.
Explanation:
Bacterial cell
1. Type of cell:- Prokaryotic.
2. Size of the cell:- 0.2 to 2 micrometer.
3. Shape of the cell:- different types e.g., cocci, bacilli.
4. Cell wall:- Present.
5. Ribosome: Smaller, 70s type.
Animal cell
1. Type of cell:- Eukaryotic.
2. Size of the cell:- 10 to 100 micrometer.
3. Shape of the cell:- Round or oval shaped.
4. Cell wall:- Absent.
5. Ribosome:- Larger, 80s type