DIFFERENCE BETWEEN PROKARYOTIC AND EUKARYOTIC CELLS
Eukaryotic cells– contain membrane-bound organelles, such as well-defined nucleus having DNA or genetic materials. Examples are animals, plants, fungi and protists.
Prokaryotic cells– it is derived from Greek word pro– before and karyon- nut or kernel. Such cells do not have true nucleus or devoid of membrane bound organelles. Most prokaryotes are unicellular.
DIFFERENCE BETWEEN PROKARYOTIC AND EUKARYOTIC CELLS
EUKARYOTIC CELL PROKARYOTIC CELL 1. Contain true nucleus bound by nuclear membrane contains DNA associated with protein and RNA. Lacks true nucleus, circular DNA lies naked in the cytoplasm and thus genetic material is not membrane bound. 2. Nucleolus is present in nucleus Absent 3. Membrane bound organelles like mitochondria, plastids, endoplasmic reticulum, Golgi body are present. Absent 4. Cell division through mitosis or meiosis. During cell division spindle apparatus is organized. Divide by simple fission, no mitosis or meiosis. No spindle formation. 5. Size of cell contains 1 mili micron to 40 mili-microns in diameter. Size of cell contains 0.5 mili micron to 5 mili-microns in diameter. 6. Protoplasm is relatively rigid, resistant to drying and can withstand wide change in pressure and temperature. More fluid and sensitive to drying, changes in temperature and pressure. 7. Contains chloroplast takes part in photosynthesis. No organized chloroplast, photosynthesis takes place on photosynthetic membrane lie freely in the cytoplasm. 8. Mitochondria are the seat of aerobic respiration. Respiratory enzymes are located on the plasma membrane. 9. Most ribosomes are attached to the ER; some are free in the cytoplasm. Ribosomes are free in the cytoplasm. 10. Examples- all organisms except bacteria and cyanobacteria. Bacteria and cyanobacteria
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DIFFERENCE BETWEEN PLANT CELL AND ANIMAL CELL
CELL STRUCTURE AND FUNCTION
MITOSIS & MEIOSIS- CELL DIVISION
MENDEL’S LAW OF INHERITANCE
DIFFERENCE BETWEEN GENE AND ALLELE
CROSSING OVER- PROCESS & FUNCTION