'Fluid mosaic model' diaporamas de présentation

Cells: The Living Units

Cells: The Living Units. 3. Cell Theory. The cell is the basic structural and functional unit of life Organismal activity depends on individual and collective activity of cells Biochemical activities of cells are dictated by subcellular structure Continuity of life has a cellular basis.

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Cells

Cells. Cell Structure and Function Photosynthesis Cellular Respiration Cell Growth and Division. Cell Structure and Function (Chapter 7). Life is Cellular. How did the Cell Theory develop? Cell Theory Guided Reading activity Know the contributions of the following scientists:

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Lipids and Membranes

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Cells

Cells. Chapter 3. I. Overview Cell Membrane Cytoplasm Cytosol Organelles Nonmembranous : Cytoskeleton, Microvilli , Centrioles , Cilia, Flagella, Ribosomes Membranous: Mitochondria, Nucleus, Endoplasmic Reticulum, Golgi Apparatus, Lysosomes , Peroxisomes , Vesicles .

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Lecture 3a.

Lecture 3a. Membranes and Transport. The Cell Membrane. Overview: Membranes. Structure of cell membranes Functions of cell membranes How things get in and out of cells. What is a membrane?. Basically, a covering. Structure of the cell membrane.

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Evolution

Evolution. Definition: A process of change in species through time which is based on genetic variation. Example: Modern elephant is a result of a changes in ancestors over millions of years. Many ancestors have died but their DNA or genes are part of organisms that live today.

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Functional Anatomy of Prokaryotic and Eukaryotic Cells

Functional Anatomy of Prokaryotic and Eukaryotic Cells. Chapter 4. Prokaryotic cells No Nucleus No Organelles Cell Wall of peptidoglycan Binary Fission 1 circular chromosome. Eukaryotic Cells Nucleus Organelles If cell wall, Cellulose or chitin Mitosis Linear chromosomes.

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Plasma Membrane Transport

Plasma Membrane Transport. Cells. Fluid Mosaic Model. Phospholipid. Cholesterol -immobilizes phospholipids (makes membranes less fluid and stronger). Membrane Protein Functions. Passive Transport. Requires no energy Occurs due to natural concentration gradient

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Lipids II; Membranes

Lipids II; Membranes. Andy Howard Introductory Biochemistry 25 September 2008. Lipids Plasmalogens Glycosphingolipids Isoprenoids Steroids Other lipids Membranes Bilayers Fluid mosaic model Physical properties Lipid Rafts Membrane proteins. Membrane transport Passive & active

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The Cell Theory

The Cell Theory. Chapter 2. The Cell. All living things are made of cells. Cells are the smallest living unit of life. Each cell performs the necessary functions to sustain life. Cells can replicate themselves. Cancer occurs when cells replicate haphazzardly.

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Composition and Movement within the membrane

Membrane Dynamics. Composition and Movement within the membrane. Components of the Membrane. Extracellular environment. Carbohydrate. Glycolipid. Phospholipid bilayer. Glycoprotein. Transmembrane (or Integral) protein. Extracellular leaflet. Cytosolic

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Chapter 5

Chapter 5. 0. The Working Cell Energetics Enzymes Transport. ENERGY AND THE CELL. 5.1 Energy is the capacity to perform work All organisms require energy to do work Kinetic energy is the energy of motion (heat, light)

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Cell Membranes and Transport

Cell Membranes and Transport. B9 - Analyze the structure and function of the cell membrane. Cell Walls. NB** Cell walls are different from cell membranes Stiff, non-living Made of complex carbohydrates Cellulose for plants Chitin for fungi Chitin-like frame for bacteria

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The Cell Membrane

The Cell Membrane. What is the cell membrane?. AKA: Plasma membrane The boundary between the cell and the environment Does every cell have a cell membrane? Yes, Each and every cell has a cell membrane. Cell membranes help maintain homeostasis, what is that?. Cells breathing

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Cell Membranes

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Cell Membranes Osmosis and Diffusion

Cell Membranes Osmosis and Diffusion. Functions of Membranes. 1. Protect cell 2. Control incoming and outgoing substances 3. Maintain ion concentrations of various substances 4. Selectively permeable - allows some molecules in, others are kept out. Phospholipid Bilayer.

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Cell Membrane

Cell Membrane. Structure and Function. Why is the plasma membrane necessary for cell survival? What characteristics should this barrier have?. Fluid Mosaic Model: Phospholipid Bilayer (grout). Phospholipids Two fatty acid chains (non-polar) tails linked to a phosphate group (polar head)

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Brainstorm: How can molecules move against their concentration gradient?

Brainstorm: How can molecules move against their concentration gradient?. Need to use energy. Active and Passive Transport. Another I Love Science Presentation @ 2006-All Rights Reserved Iteachbio @ mac.com. What is the other name for the CMB?. Fluid Mosaic Model. Passive Transport.

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Discovering the Cell

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The Cell Membrane

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