1 / 20

Cell Structure and Function

Cell Structure and Function. Chapter 3. DO NOW. Type 2 Writing 3 minutes Write 3 things you learned/remembered from last night’s reading. Announcements. Some tests have been graded Check period grades are due Monday Office hours Wed/Thurs 6:30 – 8

doctor
Download Presentation

Cell Structure and Function

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 Structure and Function Chapter 3

  2. DO NOW • Type 2 Writing • 3 minutes • Write 3 things you learned/remembered from last night’s reading

  3. Announcements • Some tests have been graded • Check period grades are due Monday • Office hours Wed/Thurs 6:30 – 8 • Use study hall / Office hours to complete test

  4. History of the Cell • 1838 – Matthias Schleiden concluded all plants are made of cells • 1839 - Theodor Schwann stated all animals are made of cells • 1855 – Rudolf Virchow concluded new cells can only be created through division

  5. Cell Theory • All things are made up of cells • Cells are the basic units of structure and function in living things • New cells are produced from existing cells

  6. Modern Cell Theory • Energy flow occurs inside of cells • Genetics (DNA) passes between cells • All cells have the same basic chemical make up

  7. Anatomy of a Cell • Nucleus • Nucleoli • Chromatin • Turns to chromosomes • Plasma Membrane • Cytoplasm • Mitochondria • Ribosomes • Endoplasmic Reticulum • Golgi Apparatus

  8. Nucleus • “headquarters” of cell • Contains DNA • For +2, what does DNA stand for? • Contains: • Nucleoli • Create Ribosomes which synthesize proteins • Chromatin • Turns to chromosomes when dividing • Not dividing: protein and DNA

  9. Chromosomes • Contains DNA • Split to convert genetic material • Encode genetic material

  10. Plasma Membrane • Also Cell Membrane • Also protects and supports • Strong but flexible • Selectively permeable • Microvilli • Absorption

  11. Cytoplasm • Gel-like substance outside of the nucleus • 70-90% water • Mitochondria • Ribosomes • Endoplasmic Reticulum • Cytoskeleton

  12. Mitochondria • This is where oxygen is used to help break down food • “Energy source” of the cell • As food is broken down, energy is released • ATP is created • Provides energy for cellular work • Liver and muscle cells have hundreds of mitochondria to supply energy needs

  13. Ribosomes • Protein synthesis • Contains messages for other cells to carry out work

  14. Endoplasmic Reticulum • Rough and Smooth • Provides channels to carry proteins from one part of the cell to another • Rough ER • “studs” of ribosomes • Push proteins out to be transported • Smooth ER • Liver has many Smooth ERs to break down cholesterol and fat

  15. Vesicle • “Small bubbles” • Metabolism, transport and storage

  16. Cytoskeleton • Groups of protein filaments • Maintain shape • Involved in movement

  17. Cell Diversity (pg.73-75) • Cells connect body parts • Fibroblasts • Erythrocytes (RBCs) • Cells the cover and line body organs • Epithelial cells – Sheets like a honey comb • Cells that move organs and body parts • Skeletal muscle / Smooth muscle

  18. Cell Diversity (pg.73-75 • Storage Cells • Fat cells • Fight disease • Macrophage – digest infectious microorganisms • Gather info and control body function • Nerve cells – receives and transmits messages • Reproduction • Oocyte (female) • Sperm (male)

  19. Homework • Read 63-71 (stop at “Cytoskeleton)

More Related