biochemistry

Card Set Information

Author:
kaitiek09
ID:
270812
Filename:
biochemistry
Updated:
2014-04-16 16:42:21
Tags:
exam
Folders:

Description:
sfsu biochem exam
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user kaitiek09 on FreezingBlue Flashcards. What would you like to do?


  1. aldose has an hydroxyl
  2. to determine deoxy look at the carbon 4 or carbon 5 to see if there is a hydroxyl group
  3. disaccharides
    2 simple sugars
  4. glycosidic linkage
    linking of 2 simple sugars
  5. why are lactose and maltose considered reducing sugars
    because one of the anomeric C is not involved in the glycosidic linkage
  6. is sucrose a reducing sugar? why or why not
    it is not because both anomeric C are involved in the glycosidic linkage
  7. function of glycogen as a polysaccharide
    stores E
  8. glycogen as a polysaccharide has a branch point at the
    alpha 1,6 linkage to others
  9. both starch and glycogen are polymers of glucose. whats the difference
    the frequency of branching alpha-1,6 linkages
  10. glycogen
    linkages
    branches
    freq
    • alpha 1,4 and 1,6
    • yes
    • every 10-12 glucose units
  11. amylose
    linkages
    branches
    freq
    • alpha 1,4
    • no
    • n/a
  12. amylopectin
    linkages
    branches
    freq
    • alpha 1,4 and 1,6
    • yes
    • every 24-30 glucose units
  13. we don't have the enzymes to digest cellulose
  14. CHO?
    • carbon
    • hydrogen
    • oxygen
  15. 6 classes of enzymes
    • oxidoreductases
    • transferases
    • hydrolases
    • lyases
    • isomerases
    • ligases
  16. 2 most important classes of enzymes
    • oxidoreductases
    • transferases
  17. reaction type
    oxidoreductases
    transferases
    hydrolases
    • oxid/red
    • group transfer
    • hydrolysis
  18. reduction type
    lyases
    isomerases
    ligases
    • cleave c-c or c-n by elimination
    • intramolecular group transfer
    • ligation of 2 substrates that may need ATP
  19. examples of oxidoreductases and transferases
    • dehydrogenase
    • glucokinase (ATP or GTP)
  20. 5 energy currencies of the cell
    • ATP
    • reduced cofactors
    • phosphocreatine
    • other nucleotides
    • thioesters
  21. other nucleotides 2
    • ATP + NDP -> ADP + NTP
    • energy equivalent
  22. 2 oxidation
    • gaining oxy
    • losing H
  23. 2 red
    • losing oxy
    • gaining H
  24. delta G -
    the reaction will proceed to make product
  25. delta G +
    the reaction will proceed to make more reactant
  26. Keq > 1
    Keq < 1
    • favors product
    • favors reactant
  27. delta G = 0
    reaction is in equilibrium
  28. what determines whether or not the reaction goes in the forward or backward direction depends on these 2
    • Keq constant
    • conc of the products and reactants
  29. when the ratio of products/reactants is equal to Keq then
    delta G = 0
  30. if you know the Keq constant for a rxn then you are able to calculate delta G^o'
  31. unfavorable rxns are couple to favorable rxns
  32. 2 phases of glycolysis
    • energy investment phase - require E
    • energy payoff phase - receive E
  33. which steps of glycolysis are regulated
    the 2 irreversible steps
  34. high levels of citrate causes what
    shuts down its rxn which inhibits PFK1
  35. high levels of ATP means
    you don't need to run glycolysis and that the ATP you have should be used towards something else in the body
  36. what is fructose 2,6-biphosphate
    an accelerator that speeds up the rxn
  37. high levels of fructose 1,5-BP function
    activate pyruvate kinase
  38. high levels of ATP and alanine function
    inhibits pyruvate kinase
  39. 4 variables pyruvate can make
    • alanine
    • oxaloacetate
    • acetyl CoA
    • lactate (reversible)
  40. glycolysis occurs where
    cytosol
  41. what 2 processes occur in the mitochondrial matrix
    • pyruvate dehydrogenase complex
    • TCA cycle
  42. the power house of the cell
    mitochondrion
  43. when pyruvate enters from the cytosol to the mitochondrial matrix it makes
    Acetyl CoA (irreversible)
  44. Pyruvate dehydrogenase is the irreversible link between glycolysis and the CAC
  45. Pyruvate dehydrogenase component (E1)
    prosthetic group/cofactor
    thiamine pyrophosphate
  46. dihydrolipoyl transacetylase (E2) prosthetic group/cofactor 2
    • pantothenic add
    • lipoamide
  47. dihydrolipoyl dehydrogenase (E3) prosthetic group/cofactor
    • FAD
    • NAD
  48. pyruvate dehydrogenase multiplex-60 subunits
    • E1
    • E3
    • E2
  49. gluconeogenesis
    reversal of glycolysis from pyruvate to glucose in the liver
  50. what co-substrates accepts an acetyl group
    NAD+
  51. pyruvate dehydrogenase requires
    CoASH

What would you like to do?

Home > Flashcards > Print Preview