Differences between prokaryotic & eukaryotic cells, Biology

DIFFERENCES BETWEEN PROKARYOTIC & EUKARYOTIC CELLS

 

S.No.

 

CHARACTERS

 

PROKARYOTIC CELL

 

EUKARYOTIC CELL

 

1

 

Nuclear Membrane

Nuclear membrane absent (Prok. are single

membranous system)

Nuclear membrane present (Euk. are double

enveloped system

 

 

2

 

 

Nucleus

 

Well organised nucleus absent, thus nuclear material is called as Incipient nucleus/prokaryon/Genophore/nucleoid etc.

 

 

Nucleus well organized

 

3

 

Cell organnelles

Membranous cell organelles are absent (Mitochondria, plastids, E.R., golgibody, Microbody)

 

Membranous cell organelles are present. (Plastids only in plants)

4

Ribosome

70-S type

80-S type and 70-S (Mito. & chloroplast)

 

5

 

Cell wall

Present (made by peptidoglycan / Murein /

Muramic acid / Mucopeptide

Present inn plant cells only (made by

cellulose or chitin)

 

6

 

Resp. Enzymes

Present in mesosomes mainly or in cell membrane

 

Found in cytoplasm and mitochondria

 

7

 

Flagella

 

Flagella are single stranded, made up of flagellin protei

 

Flagella are eleven stranded, made up of tubulin protein (9+2 arrangement)

 

 

8

 

 

Photosynthesis

Takes place in thylakoids or lamellaes or chlorosomes in BGA (in bacteria chromatophores)

 

 

Chloroplast

 

9

 

Cyclosis

 

Cytoplasmic streaming absent

 

Present

 

 

10

 

 

Chromosomes

Naked or folded genome made by only circular-ds DNA (C-C type) (Histone protein absent)

 

True chromosomes & more than one

(Histone asso. with DNA) (DNA A-T type)

11

Cell division

Amitosis only

Mitosis & meiosis (R.D.) mainly

12

Ploidy level

Consider as haploid

Haploid, Diploid, Polyploid

 

 

13

 

 

Sexuality

Sexuality or true sexual reproduction absent in prokaryotic cell [In bacteria genetic- recombination or parasexual reproduction by conjugation transduction & transform)

 

Sexuality or sexual reproduction present (Meiosis, gamete formation & true fertilization occurs)

14

Vacuoles

Absent but gas vacuole may present

Present as sap vacuoles in plant cell.

 

15

 

Protein Synthesis

 

Takes place in cytoplasm

Transcription in nucleus & translation in cytoplasm on ribosome

 

 

Examples :-

Bacteria, Cyanobacteria (BGA) Mycoplasma (PPLO), ricketsias, Actinomycetes

 

All plant & animal cells including human cells.

Posted Date: 10/5/2012 3:30:00 AM | Location : United States







Related Discussions:- Differences between prokaryotic & eukaryotic cells, Assignment Help, Ask Question on Differences between prokaryotic & eukaryotic cells, Get Answer, Expert's Help, Differences between prokaryotic & eukaryotic cells Discussions

Write discussion on Differences between prokaryotic & eukaryotic cells
Your posts are moderated
Related Questions
What technique would you use to see if two proteins interact with each other inside of a cell?

Define Ferricyanide-cyanide reagent or Drabkin's solution? Dissolve 0.2 g potassium ferricyanide, 0.05 g potassium cyanide and 1.0 g sodium bicarbonate in about 100-1 50 ml dis

Define about the Spectroscopy- colorimetry? Spectroscopy, therefore, is the study of the absorption and emission of radiation by matter. Absorption Spectroscopy is usually used

Explain Membrane Filtration Technique? Another method used for determining the bacterial number is the filtration technique. The margain figure illustrates the membrane filter

Ask questiRed-green color blindness is an X-linked recessive disorder. If Allison is heterozygous (a carrier), and her husband, Michael, is NOT colorblind. What is the chance that


What do numeric pyramids represent? Numeric pyramids show the number of individuals in each trophic level of a food chain.

According to the function of the transmitted neural impulse which are the types of neurons? How different are the concepts of afference and efference of the neural impulse transmis

Define Ergogenic and for training and competition? There is always our desire to work with the body more .than its capability. This is more so in case of athletes. They wish to

Q What is the excretion? Excretion in Physiology is the procedure of elimination of metabolic wastes and other toxic substances from the body.