Biology 1.2 Quiz

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  1. 2 Main functions of Polysaccharide?
    Storage And Structure.
  2. Which polysaccharides are in Storage function?
    Starch And Glycogen
  3. Which polysaccharides are in Structure function?
    Cellulose And Chitin
  4. What is starch?
    • Storage Polysaccharide
    • Produced by plants 
    • Polymer of glucose 
    • Form of energy storage
    • Insoluble in water 
    • Combo of 2 molecules: Amylose & Amylopectin
  5. Characteristics of Amylose?
    • Branched
    • alpha 1-4 Glycosidic linkage
  6. Characteristics of Amylopectin?
    • branched
    • alpha 1-4 glycosidic linkages with branches beginning at alpha 1-6
  7. What is glycogen?
    • Produced by animals 
    • Polymer of glucose 
    • Alpha 1-4 glycosidic linkages with alpha 1-6
    • branch points
    • more branches than amylopectin
  8. What does glycogen store?
    Excess glucose in muscles and liver cells
  9. When is glycogen hydrolyzed?
    when glucose levels are low in the blood.
  10. What is cellulose?
    • Produced by plants   
    • Polymer of glucose   
    • Straight chains of ß – glucose   
    • Every other monomer is inverted to form glycosidic links
    • Hydrogen bonding between adjacent polymer strands
    • produces tight bundles (microfibrils)
  11. Where is cellulose found?
    In cell walls
  12. What is Chitin?
    • polymer of special glucose molecules that have nitrogen groups attached to C2   
    • makes up arthropod exoskeletons
    • can be pigmented
  13. What is saturated fat? And examples.
    • raises blood cholesterol
    •  foods from animals (meat, milk and other dairy products made from whole milk)
    • Plants that contain high amounts of saturated fatty acids include coconut oil, palm oil, and palm kernel oil (often called tropical oils) and
    • cocoa butter.
  14. Why is saturated fat solid?
    • hydrogenation
    •  The process changes a liquid oil, naturally high in unsaturated fatty acids, to a more solid and saturated form of fat. The greater the degree of hydrogenation, the moresaturated the fat becomes.
  15. Unsaturated fats lower...?
    blood cholesterol levels
  16. Where are Polyunsaturated fats found?
    in liquid oils of vegetable origin, such as safflower, sesame, sunflower and corn oil and in many nuts
  17. Where are monounsaturated fats found?
    Canola and olive oils, avocados and some nuts
  18. Where are Omega- 3 fats found?
    Fish oils
  19. Omega-3 fats lower...?
    blood triglyceroides
  20. What is a trans-fat?
    man-made form of unsaturated fat
  21. What is a Nucleic Acid?
    • Used to store hereditary information
    • Can produce identical copies of themselves and  therefore allows organisms to reproduce
  22. A Nucleotide contains:
    • 1 phosphate group
    • 1 sugar (DNA ­ deoxyribose, RNA ­ ribose)
    • 1 nitrogenous base
  23. 5 types of Nitrogenous bases
    • Purines
    • Adenine
    • Guamine
    • Pyrimidines
    • cytosine
    • thymine (DNA only),
    • uracil (RNA only)
  24. What is a protein made up of?
    it is a polymer made up of a long chain of amino acids
  25. Functions of a protein?
    • provides energy as a last resort
    • building blocks
    • passive transport
    • active transport
    • immunity
    • catalyst
    • regulates reactions
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Biology 1.2 Quiz
2015-02-23 00:21:26
bio 1.2
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