1 / 17

Organelles continued

Organelles continued. Cell Membrane. Location Surrounds the cell Structure Thin and flexible Lipid bilayer with proteins Function Support and protect the cell Controls what gets in and out of the cell. Cell Wall. Location Surrounds the cell in plants, algae, and fungi

grazia
Download Presentation

Organelles continued

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. Organelles continued

  2. Cell Membrane • Location • Surrounds the cell • Structure • Thin and flexible • Lipid bilayer with proteins • Function • Support and protect the cell • Controls what gets in and out of the cell

  3. Cell Wall • Location • Surrounds the cell in plants, algae, and fungi • Outside the cell membrane • Structure • Made from fibers of carbohydrates and proteins • Cellulose in plants • Function • Support and protect

  4. Nucleus • Location • Inside the cell in the cytoplasm • Structure • Nuclear envelope, nuclear pores, nucleolus, and chromosomes • Function • Controls most cell processes contains DNA • Making proteins

  5. Chromatin/Chromosomes • Location • Inside the nucleus • Structure • Chromatin: DNA bound proteins • Chromosomes: condensed chromatin--threadlike • Function • Contain genetic information passed from generation to generation

  6. Nucleolus • Location • Inside the nucleus • Structure • Small dense region • Function • Assemble ribosomes

  7. Nuclear Envelope • Location • Surrounding the nucleus • Structure • Double layer membrane with thousands of pores • Function • Send RNA and other information through the cell

  8. Ribosomes • Location • In the cytoplasm and on rough endoplasmic reticulum • Structure • Small particles made of RNA and proteins • Function • Produce proteins

  9. Endoplasmic Reticulum • Location • In cytoplasm • Structure • Internal membrane system • Continuation of the outer nuclear membrane • Function • Assemble components of the cell and modify proteins • Smooth: synthesis of lipids and membrane proteins • Rough: synthesis of other proteins (has ribosomes)

  10. Golgi Apparatus • Location • In the cytoplasm • Structure • Membrane bound structure • Stack of membrane-bound vesicles • Function • Important for packaging macromolecules for transport to other parts of the cell.

  11. Lysosomes • Location • In the cytoplasm • Common in animal cells, but not in plant cells • Structure • Small membrane organelles containing hydrolytic enzymes necessary for digestion. • Function • Break down macromolecules and organelles

  12. Vacuoles • Location • In the cytoplasm • Large in plant cells • Structure • Membrane bound sac • Function • Plays role in digestion and release of cellular waste.

  13. Chloroplasts • Location • In plant cells and other organism, in the cytoplasm • Structure • Bounded by 2 enveloped membranes • Contain large stacks of photosynthetic membranes • Function • Contains chlorophyll—green color of plants • Photosynthesis

  14. Mitochondria • Location • In the cytoplasm • Structure • Enclosed by 2 membranes • Function • Make energy for growth, development, and movement. • Powerhouse of the cell

  15. IV. Cell Shape and Size • Maintenance of shape 1. In plants: cell wall 2. In animals: cytoskeleton • Cytoskeleton - consists of 2 types of structures 1. Microtubules: hollow tubes made of tubulin

  16. a. Cilia: short, hair-like projections b. Flagella: long, whip-like projections

  17. 2. Microfilaments: NOT hollow – 2 twisted chains of proteins (like a rope) • Size of Cells - can vary from 1 micrometer (bacteria) to 1 meter (nerve cell)

More Related