organism

** Give the different between eukaryote and prokaryote?

**write down comparison among eukaryote, prokaryote and sub-cellular organism?

Point	Eukaryote	Prokaryote	Sub-cellular
Size	Both microscopic and  macroscopic	Microscopic but not smaller than 300 nanometer	Microscopic  and smaller than 300 nanometer
Cellulartity	Complex cell and more developed	Simple primary cell	Not like a cell
Nucleus	Present and developed	Absent but nucleoid present	Absent but nucleic acid may present
Nuclear  membrane	Present	Absent	Absent
Nucleic acid	Both DNA and RNA	Both DNA and RNA	Either DNA and RNA
Lysoso	Present	Absent	Absent
Metabolic activities	Present	Present	Absent
Cell division	Mitosis	Binary fission	Replication
Example	Protozoa, fungi etc.	Bacteria, Chlamydia etc.	Virus, prion, Viroid etc.

What is Protozoa?

 Answer: A type of parasite consists of a single cell like unit which is morphologically and functionally complete. E.g. Endameba hnstolytica.

What are Bacteria (singular –bacterium)?

Answer: Bacteria are prokaryotic microorganism multiply by binary fission having own metabolic acotivzy.  Many of the them are pathogenic. E.g. Streptococcus pyogen, staphylococcus aurous etc. What is virus?

Answer: A very tiny sub-cellular microorganism composed of protein and nucleic acid and cannot grow in extra cellular environment. Most of them are pathogenic. e.g hepatitis virus, polio virus, etc.

** What is microorganism and Classification of microorganism?

Answer: The word Micro-organism comes from two Greek words – (i) Mikros = tiny

                                                                                                                             (ii) Organ on= living being.                                                Micro-organism can be defined as very tiny usually microscopic entity capable carrying on living processes. It is also known as microbes. Example: protozoa, bacteria, virus, etc.                                    Classification of Micro-organism

According to biological character Microorganism can be classify as-

(a)    Eukaryote. e.g. Algae, fungi protozoa animal parasite.

(b)    Prokaryote. e.g. Bacteria, Chlamydia, Mycoplasma, rickettsia.

Sub-cellular. e.g. Virus, prion, virion

Microbiology

Microbiology

The word Microbiology comes from tow words –

               Microbes = micro- organism,

               Logos =knowledge.

It has absence of biology which deals with the study of different micro-organism.

 Division of microbiology:

The divisions are based on the type of microorganisms. The common divisions are –

Bacteriology: It is a branch of microbiology which deals with the study of different Bacteria.

Virology: It is a branch of microbiology which deals with the study of different Virus.

Mycology: It is a branch of microbiology which deals with the study of different Fungus.

Parasitology: It is a branch of microbiology which deals with the study of different Parasites. 

What is fungus?

Answer: They are heterotrophic aerobic gram positive organisms and are generally multicellular. Some of them are pathogenic e.g. Candida alb cans.