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cell cell Presentation Transcript

  • Cells were discovered in 1665 by British scientist Robert Hooke. Animal and plant cell range in size between 1 and 100 micrometers and are thus visible only with the aid of a microscope. HASIMAH BT AZIT
  • Animal cell  enclosed by a plasma membrane and containing a membrane-bound nucleus and organelles.  animal cells do not have a cell wall.
  • CHAPTER 1- CELL ANIMAL CELL
  • Draw an animal cell and label
  • PLANT CELL
  • ?
  • CELL WALL [plant cell]
  • Function  Shape of plant cell  Mechanical support of a plant cell
  • CELL MEMBRANES
  • Cell membrane
  • Function  Separates the content of a cell from the outer environment  Regulates the movement of substances into and out of cytoplasm
  • ORGANELLS nucleus
  • Function  Controls all activities of the cell  Chromosomes inside the nucleus carry genetic information which determines the characteristics and functions of a cell.
  • MITOCHONDRIA
  • Function • Mitochondria are oblong shaped organelles that are found in the cytoplasm of every eukaryotic cell. • In the animal cell, they are the main power generators, converting oxygen and glucose into energy.
  • ENDOPLASMIC RETICULUM
  • Function • The endoplasmic reticulum is a network of sacs that manufactures, processes, and transports chemical compounds for use inside and outside of the cell. • It is connected to the double-layered nuclear envelope, providing a pipeline between the nucleus and the cytoplasm.
  • SMOOTH ENDOPLASMIC RETICULUM
  • Function  Metabolic reaction  Synthesis lipids and detoxification
  • GOLGY BODY
  • Function The Golgi apparatus is the distribution and shipping department for the cell's chemical products. It modifies proteins and fats built in the endoplasmic reticulum and prepares them for export to the outside of the cell.
  • •The main function of these micro bodies is digestion. • Lysosomes break down cellular waste products and debris from outside the cell into simple compounds, which are transferred to the cytoplasm as new cell-building materials.
  • Vacuole - a single layer of unit membrane enclosing fluid in a sack Function - produces turgid pressure against cell wall for support - stores water and various chemicals - may store insoluble wastes
  • CHLOROPLAST
  • Function  Absorbing light for photosynthesis  Give green color to plant
  • CENTRIOLES, RIBOSOME, Involve in Synthesis proteins cell division
  • Enzyme synthesis  DNA/ chromosome is copied by RNA  RNA sent information to the ribosome  Ribosome synthesis enzyme according to information  Protein / enzyme produced is transported by RER in vesicles called transport vesicles.  Vesicles move to Golgi body, proteins are processed before secreted outside the cell.
  • Density of certain organelles with the function of specific cells What organelle can be found most in palisade cell ? WHY?
  • muscle What organelle can be found most in muscle cell ? WHY?
  • What organelle can be found most in sperm cell ? WHY?