1 / 42

Understanding Modern Cell Theory: Structure, Function, and Types of Cells

This review delves into the history and foundational principles of modern cell theory, highlighting that all living organisms are composed of one or more cells, the cell as a structural and functional unit, and the concept that cells arise from pre-existing cells. We explore the various types of microscopes essential for studying cells, the importance of organelles, the fluid mosaic model of cell membranes, and basic transport mechanisms like osmosis and diffusion. Practical examples and their implications for health, such as hypoxemia and kidney failure, are also discussed.

cyrus-ramos
Télécharger la présentation

Understanding Modern Cell Theory: Structure, Function, and Types of Cells

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 Unit – A review

  2. Know the history…who and what D G A B H C E F I

  3. Know Modern cell theory • 1. All known living things are made up of 1 or more cells. • 2. The cell is structural & functional unit of all living things • 3. All cells come from pre-existing cells by division.             (Spontaneous Generation does not occur). • 4. Cells contain hereditary information which is passed from cell to cell during cell division. • 5. All cells are basically the same in chemical composition. • 6. All energy flow (metabolism & biochemistry) of life occurs within cells.    

  4. Know scope types and parts… • Stereomicroscope (dissecting scope) • Compound light microscope

  5. Electron microscopes: SEM TEM Scanning/Tunneling, Ion Electron microscopes are MUCH more powerful and have much higher magnification ability and much better/clearer resolution (but no color…)

  6. Total Magnification? • Eyepiece power X Objective lens power = Ex. 10X eyepiece, 45X high Power? Total : 450X mag What are the 3 objective lenses on your light scopes? scanning, low, high

  7. Know the organelles Cell Wall Centrioles Chloroplasts Cilia Cytoplasm Endoplasmic Vacuoles Reticulum Flagella Golgi Bodies LysosomesMitochondria Nucleolus Nucleus Cell Membrane Ribosomes

  8. And what the organelles do… Cilia Mitochondria Centrioles Cytosol (cytoplasm) Nucleus Cell Wall Cell membrane Flagellum Golgi bodies Endoplasmic reticulum Vacuole Nucleolus Chloroplasts Ribosomes Lysosomes

  9. Fluid Mosaic Model • Fluid mosaic and cell membrane

  10. Carbohydrate chains Marker protein Gated Channel Protein Cholesterol Channel Protein Receptor protein Filaments of cytoskeleton Cytosol

  11. Fig. 7-7 Fibers of extracellular matrix (ECM) Carbohydrate Glyco- protein Glycolipid EXTRACELLULAR SIDE OF MEMBRANE Receptor protein Gated channel protein Cholesterol Microfilaments of cytoskeleton Peripheral proteins Channel protein Integral protein CYTOPLASMIC SIDE OF MEMBRANE

  12. Marker protein Carb of marker protein Receptor protein Cholesterol cytoskeleton Channel protein Phospholipid molecule

  13. Active or Passive?

  14. Active or Passive? 2 2

  15. Active or Passive?

  16. Fig. 7-17 __________ – 3 types A review... ______________ ___________ _____ _______________ ____________ __________ _________________________

  17. Fig. 7-17 Endocytosis – 3 types A review... Active Transport Phagocytosis Pump Passive transport Pinocytosis Exocytosis Receptor-Mediated endocytosis Osmosis and dialysis are passive

  18. UGA labs Website to access: Cogenteducation.edu To log in: lastname.firstname@millcreek.edu Password: millcreek

  19. Graniteville – Chlorine gas spill • Example of simple Diffusion • Spill caused by a ____________________ Train wreck • Anita -- having difficulty breathing, low alveolar oxygen levels. • diagnosed with _________________ Hypoxemia • Treatment options: diuretic injection, corticosteroids by nebulizer, oxygen by nasal prongs Which gave first and why? oxygen: quickest, fewest side effects

  20. Should look like this… Anita’s original tests indicated swelling…. Hypoxemia, or low blood oxygen, describes a lower than normal level of oxygen in your blood.

  21. Clark the calf • Example of Osmosis • Symptoms: ____________ and ________ seizures and diarrhea • Caused by _______________ cerebral edema (too much water in brain) • Could give 1 of the following: Hypotonic saline, Isotonic saline, Hypertonic saline Which one was correct and why? Hypertonic saline, pulled water out of brain into bloodstream

  22. Filtration -- Anthony • Example of dialysis – movement of particles • Symptoms: high levels of urea and potassium normal levels of albumin higher than normal body mass. • Diagnosed with: ______________________ Choices:kidneyfailure, liver failure, or heart failure– Kidney failure was it! • You changed ____________and _________________ pore sizes in the filter and different types of flow: countercurrent and parallel (next to the largest pore was best) (countercurrent was best)

More Related