1 / 21

Diffusion

Diffusion. Diffusion: movement of particles from an area of high concentration to an area of low concentration Particles move along a concentration gradient – no energy is used!!! Particles move until distribution of particles is even throughout – dynamic equilibrium.

michel
Download Presentation

Diffusion

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. Diffusion • Diffusion: movement of particles from an area of high concentration to an area of low concentration • Particles move along a concentration gradient – no energy is used!!! • Particles move until distribution of particles is even throughout – dynamic equilibrium

  2. Diffusion is important for cells • Diffusion is one way that substances like Na+, K+, Ca2+ can move in and out of cells

  3. Focus Activity • What are the 3 most common elements in the human body & their %’s? 2. Which of these elements is always found in organic compounds?

  4. Biochemistry

  5. Notes Chapter 6. 3 – Life Substances and Organic Chemistry • Organic chemistry is the study of Carbon-based compounds. • All living things are composed of organic compounds.

  6. What makes Carbon Special?

  7. 1. Carbon can covalently bond with up to four other atoms.

  8. 2. Carbon can form immensely diverse compounds, such as long chains and rings DNA with tens of Billions of Carbon atoms Methane with 1 Carbon atom

  9. There are 4 Fundamental Organic Molecules used in our bodies • 1. Carbohydrates (sugars and starches) • 2. Lipids (fats, waxes, oils, steroid hormones) • 3. Proteins – (enzymes, muscles tissue, cell structures) • 4. Nucleic Acids – (DNA and RNA which are our genetic material)

  10. Fundamental Biomolecules“CHNO” Proteins Carbohydrates Nucleic Acids Lipids monomer monomer monomer monomer Amino acids Monosaccharides Nucleotide Fatty Acids Function Function Function Function 1. Enzymes 2. Cell Structural components 3. Immunity 1. Energy storage 2. Plant cellulose 1. Genetic material 1. Long term energy storage 2. Protective coverings 3. Insulation

  11. Examples of Proteins • Enzymes • Muscle tissue • Keratin (hair, fingernails, horns)

  12. Enzymes Speed up chemical reactions in the body function using the Lock and Key Model Enzymes usually end in ASE Protein test is Biuret’s reagent Special Notes for Proteins

  13. Examples Carbohydrates • Glucose • Sucrose • fructose • starches • glycogen

  14. Special Notes for Carbohydrates • Ratio of C:H:O is 1:2:1 (C6H12O6) • Starch Test is Iodine • Sugar Test is Benedict’s Reagent • Oftens ends in OSE

  15. Examples of Nucleic Acids • DNA (deoxyribonucleic acid) • RNA (ribonucleic acid) is used for making proteins

  16. Special Notes for Nucleic Acids • Nucleotide always consist of three parts

  17. Examples of Lipids • Cell membrane • Fats • Oils • Sterols • Cholesterol

  18. Special Notes for Lipids • Saturated fats have no double bonds • Unsaturated fats have 1 double bond • Test is the paper bag test (look for a grease spot)

  19. Osmosis • Type of diffusion in which only water moves • Water will move from a high concentration to a low concentration • Useful in cell membranes that are selectively permeable • Only certain materials are allowed to move freely in and out of the cell through the membrane

  20. Nucleic Acids • Consist of C, H, O, nitrogen, and phosphorus • Building blocks (monomers) are nucleotides • Each nucleotide consist of three parts: • Phosphate • Sugar • Nitrogenous bases

  21. Lipid functions • Long term Energy storage • Insulation • Protective coverings • Cell membranes • Tested for using the paper bag or grease spot test

More Related