1 / 16

Cell: The basic unit of life

Explore the fascinating realm of cells, the basic units of life, their structures, functions, and differences in plant and animal cells. Delve into the intricate world of organelles and their roles within a cell.

cmiles
Télécharger la présentation

Cell: The basic unit of life

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cell: The basic unit of life Binniya Mary Benny B. Ed Student 2015-17 No: 28

  2. OBJECTIVES • To identify and explain cell as basic unit of life. • To study different cell organelles , their functions and similarities. • To study different parts of an animal cell.

  3. THE CELL • The basic unit of life. • All organisms made up of cells. • Varies in size and shape. • Microscopic cells.

  4. Cells are covered by cell membrane. • All substances inside the cell membrane constitute the protoplasm. • The part of cytoplasm excluding nucleus is cytoplasm. • Cell organelles are specific parts seen in the cytoplasm to perform physiological functions. • Cells are differentiated into plant cell and animal cell. There are some structural differences between them. But functionally same.

  5. PLANT CELL

  6. Animal Cell

  7. Components • Cell membrane • Protoplasm • Cytoplasm • Cell nucleus • Nucleolus • Mitochondria • Endoplasmic reticulum • Golgi apparatus • Ribosomes • Lysosomes • Vacuole • Centrosome • Microtubule

  8. CELL NUCLEUS • Referred to as the control center of the cell. • The genetic material of the organism is present in cell nucleus. • Replication of DNA& synthesis of RNA occurs. • Regulates the activities of other cell organelles. • NUCLEOLUS • Structure with in nucleus • Helps in synthesis of ribosomes. Nucleolus Nucleus

  9. Power house of the cell. • Helps in the production and storage of energy. • Cellular respiration • Abundantly seen in the cells of liver, brain and muscles where energy requirement is high. • The energy produced is ATP. MITOCHONDRION

  10. The passage in the cell. • Network for transport of certain substances in and out of the nucleus. • Conduction of materials inside the cell takes place through this organelle. • Also known as cytoskeleton as it provides firmness and shape to the cell. • Composed of rough and smooth ER.(RER & SER) • Exists in three forms: Lamellae, Vesicles & Tubules • ENDOPLASMIC RETICULUM

  11. RIBOSOME • Centre of protein synthesis in the cell. • Known as protein factories. • Seen either attached to the endoplasmic reticulum or free in the cytoplasm. • Have two sub units. Large subunit and small subunit.

  12. GOLGI COMPLEX • Collects cell secretions like enzymes, hormones, mucous etc., in small vesicles. • Seen in plenty in glandular cells. • Seen plenty in glandular cells. • Involved with processing and packaging of the molecules that are synthesized by the cells. • The crude proteins that are passed on by the ER to the apparatus are developed by Golgi apparatus into primary, secondary and tertiary proteins.

  13. MICROTUBULES • Hollow rods • Functions as support and shape to the cell. • LYSOSOME • Referred as suicide bags of cell • Have digestive enzymes and are involved in clearing the unwanted waste materials from the cell. • Engulf damaged materials like damaged cells, invading microorganisms & digest food particles.

  14. Vacuole • VACUOLE • Large storage organelles • Store excess food or water • CENTROSOME • Found in centrosome. • Play major role in cell division. • Organize the microtubules assembly during cell division.

  15. REFERENCES • SCERT Text book, STD viii • http://www.enchantedlearning.com/cell • http://biology.about.com>AboutEducation>Biology>Cell Biology • http://biololgy tutorvista.com/animal-and-plant cell

  16. THANK YOU…

More Related