Bio Lecture

Card Set Information

Author:
krmason
ID:
130360
Filename:
Bio Lecture
Updated:
2012-01-24 21:33:20
Tags:
Chapter
Folders:

Description:
Chem of organic molecules
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user krmason on FreezingBlue Flashcards. What would you like to do?


  1. Biological Molecules
    • Formed by Covalent bonds
    • Part of living organisms
    • Contain C, Which
    • -forms the skeleton of the organic molecule
    • -Almost always covalently bonds with H,N,O,P and S
    • -Functional groups determine the reactivity of the molecule
  2. Isomers
    • have the same chemical formula, but different structures
    • differences in arrangement of atoms affects how they react
  3. Classes of Organic Compounds
    • Carbohydrates (CHO)
    • Lipids
    • Proteins
    • Nucleic acids
  4. Macromolecules
    • Monomers (single units) link to form polymers through dehydration reactions (loss of H2O)
    • Polymers are degraded in hydrolysis reactions (addition of H2O)
  5. Classes of Organic Compounds
    • Lipids
    • -fats
    • -Glycerol and fatty acids
    • Carbohydrates
    • -Polysaccharide
    • -Monosaccharide
    • Proteins
    • -Polypeptide
    • -Amino acids
    • Nucleic Acids
    • -DNA,RNA
    • -Nucleotide
  6. Carbohydrates
    • Monosaccharides
    • single sugar molecule
    • carbon backbone of 3-7 carbons
    • Ex. Glucose, ribose, deoxyribose
    • Disaccharides
    • 2 sugars joined by a dehydration rxn.
    • Ex. formation of maltose from 2 glucose
  7. Carbohydatres (Cont'd)
    • Polysaccharides
    • -short term energy storage
    • -plants store glucose as starch
    • -animals store glucose as glycogen
    • Structural molecules
    • -glucose polymers form cellulose in plant cell walls
    • -glucose polymers form chains exoskeletons
  8. Lipids
    • Triglycerides
    • -long term energy storage
    • Phospolipids
    • -membranes
    • Steroids
    • -Hormones
    • Waxes
    • -protective coating that prevents water loss
  9. Phospholipids
    • Contain a polar phosphate group on a hydrophilic head
    • Hydrocarbon chains form a hydrophobic tail
    • Form a lipid bilayer membrane in cells
  10. Steroids
    • Different structure compared to other fats; 4 fused carbon rings
    • Functional groups determine function of the steroid
  11. Waxes
    • Solid a normal T (high melting point)
    • Hydrophobic; waterproof
    • Ex. wax coating produced by fruits, honeycomb,waxes on skin,ear wax
  12. Proteins
    • Amino acids joined together by peptide bonds form a protein peptide
    • Amino acids have an amino (NH2) group and a carboxyl (COOH) group
  13. Four levels of Proteins Structure
    • Primary
    • -Amino Acid sequence
    • Secondary
    • -a-helices and B-sheets form from hydrogen bonds between amino acids
    • Tertiary
    • different R groups covanlently bond; protein assumes globular shapes
    • Quaternary
    • -interaction between 2 or more polypeptides to form on functional protein
  14. Primary Protein Structure
    This level of structure is determined by the sequences of amino acids that join to form a polypeptide
  15. Common Function of a Proteins
    • Structural Support
    • -Ex. keratin and collagen
    • Enzymes
    • -catalyst for biological reactions
    • Transport
    • -Ex. hemoglobin transports oxygen in the blood
    • Immunity
    • -Antibodies
    • Hormones
    • Motion
    • actin and myosin
  16. Nucleic Acids
    • DNA
    • -Deoxyribonucleic acid
    • -Genetic code:A,T,C, and G
    • -Double stranded, helical
    • RNA
    • -Ribonucleic acid
    • -Contains code for protein seqence
    • -A,U,C,and G
    • -Single stranded, linear
    • ATP
    • -Supplies energy for cellular processes

What would you like to do?

Home > Flashcards > Print Preview