Card Set Information

2011-09-11 12:09:10

1st Test
Show Answers:

  1. Does salt conduct electricity?
    yes, contains ions
  2. What is found in over 1/2 our hormones, cholesterol and vitamin d?
    sterols/steriods (lipid)
  3. What has 4 interlocking hydrocarbon rings?
    sterols/steriods (lipid)
  4. What do emulsifiers serperate?
    seperate lipid molecules from each other w/o breaking bond
  5. What do emulsifier allow lipids to mix with?
    water; due to polar heads
  6. What is the most functionally diverse of all all bio molecultes & play many roles in cells?
    Protein (polymer-it's monomer is AA)
  7. How many different types of AA's are there?
  8. What gives each AA it's unique characteristics & changes between the 20 AA's?
    The R group
  9. Is the R group polar or non-polar? Electrically charged? Acidic or Basic?
    • -can be polar or non-polar
    • -yes, is electrically charged
    • -can be acidic or basic
  10. Are Amino Acids a monomer or polymer?
  11. What is a 2-3 AA called?
  12. What is a few-100 AA's called? Polypeptide or Protein?
  13. What is 100's-1000's of AA's called?
  14. What is a peptide bond?
    -Polar Covalent Bond between AA's occurs via dehydration/loss of water
  15. What happens in the 1. level of protein stucture?
    order or sequence of AA "beads on a string" includes Peptide Bond
  16. What happens in the 2. level of protein structure?
    • Hydrogen bonding between non-adjacent AA
    • (this forms b/c AA's are plar)
    • causing either Helix or B pleated sheets
  17. What happens in the 3. level of protein structure?
    • Inlvolves interaction between the R groups of AA's
    • a) R groups can be attratcted to eachother (Polor to Polar) & repelled by eachother
    • b) R groups can also form Ionic & H - bonds
  18. What happens in the 4. level of protein structure?
    • Bonding of 2 or more polypeptides coming together (not all proteins have this)
    • EACH is NOW called: Polypeptide Domain
  19. In what levels of protein sturcture give protein it's specific shape & what is it called?
    • - levels 2-4
    • -Protein Confirmation
  20. What gives it's specific shape that is unique to each type of protein (twisting)? (also essential for its functioning)
    Protein Confirmation
  21. When a protien unfolds/untwists & looses its confirmation is thia Denaturation or Confirmation?
    Protein Denaturation
  22. What happens during protein denaturation?
    • -destroys levels 2-4 (untangles "beads")
    • -1. remains/peptide bond remains
    • -loss of function
    • -some denaturation is reversable some is not
  23. What are the 3 causes of denaturation?
    • -heat
    • -acid
    • -salt
  24. What are the 2 main types of proteins?
    Fiberous & Globular (aka: functional proteins)
  25. What are rope/strand like proteins, used for, have structure, very stable & less chemically reactive?
    • Fiberous
    • ie: collagen
  26. What type of protein does all the work, chemically reactive & NOT stable?
    • Globular
    • ie: enzymes
  27. What is the 4th Biolgical Protein?
    • Nucleic Acisds (polymer)
    • Nucleotides (monomer)
  28. What 3 things do all nucleotides consist of?
    • -ribose sugar-5 carbon sugar
    • -@ least one phosphate group
    • -on (of many) nitrogenous bases
  29. Is ATP a nucleotide or nucleic acid?
  30. Are nucleic acids a monomer or polymer?
  31. What is the universal energy compound of cells?
  32. What does DNA stand for?
    Deroxyribo Nucleic Acid
  33. What is double stranded found in nucleus & has genetic material/manuscript of all cells?
  34. What does RNA stand for?
    Ribo Nucleic Acid
  35. What is single stranded found through out cell, in nucleus & copies DNA?
  36. What is the Cell Theory?
    all organisms need to consist of @ least one cell & all new cells come from pre-existing cells
  37. What consist of either just one cell or of group/chain/cluster of identical cells?
    Unicellular organisms
  38. What kingdoms are unicellular organisms part of?
    Eubacteria, Archaebacteria & Protista