BIO 003 QUIZ2

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Author:
marco5
ID:
203723
Filename:
BIO 003 QUIZ2
Updated:
2013-02-27 00:08:50
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BIO003
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QUIZ 2
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  1. macromolecules
    •The large molecules that compose life are known as macromolecules. 

    • • Examples of macromolecules are: carbohydrates, lipids, proteins and nucleic
    • acids.
  2. monomers
    • Macromolecules may be composed of several
    • smaller identical / similar molecular units known as monomers
  3. dehydration synthesis.
    • Cells link
    • monomers together to form a polymer accompanied by the elimination of water, by
    • a process known as dehydration synthesis.
  4. hydrolysis.
    • cells breakdown
    • macromolecules (eg during digestion) with the help of water. This process is
    • known as hydrolysis.
  5. carbohydrates
    • Synthesis of carbohydrates begins with carbon fixation that occurs in photosynthesis. Most carbohydrates are forms by chemical steps that modify glucose.

    • • Carbohydrates are
    • made up of monomers known as monosaccharides / single unit sugars.
    • Example: Glucose and Fructose.
  6. Disaccharides
    • •A carbohydrate
    • composed of two monosaccharides is known as a disaccharide, i.e. 

    •             Glucose
    • + Glucose = Maltose
  7. Sucrose
    Glucose + Fructose = Sucrose

    CARBOHYDRATE
  8. Polysaccharides
    • Polysaccharides
    • are long chains of sugar units.
    • polysaccharide. Examples are: Starch, Glycogen, Cellulose and Chitin.Each
    • of the four differs in some way.
  9. Starch
    POLYSACCHARIDE
  10. GLYCOGEN
    POLYSACCHARIDE
  11. Lipids
    • MADE FROM HYDROCARBONS: Hydrocarbons are mainly
    • Hydrogen and carbon.  This makes them
    • insoluble in water. Lipids include fats, oils waxes, phosholipids and steroids
  12. PROTEINS
    • Proteins are
    • made up of 20 kinds of amino acids in various combinations
  13. Nucleic Acids
    • Nucleic Acids are made up of monomeric units
    • called ‘nucleotides’
    • There are two nucleic acids,. deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).

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