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Biochemistry Lecture and Laboratory > Additional > Flashcards

Additional Flashcards

1
Q

Differentiate reversible denaturation vs irreversible denaturation

A

Reversible - protein unfolding lang pwede pa maibalik kaya reversible
Irreversible - hydrolysis of peptide bonds

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2
Q

Differentiate reversible denaturation vs irreversible denaturation

A

Reversible - protein unfolding lang pwede pa maibalik kaya reversible
Irreversible - hydrolysis of peptide bonds

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3
Q

Levels of protein affeted in

Heavy metal Poisoning?
Digestion of Foods?
Hair perming?
Proteins Ip?

A

Heavy metal poisoning (tertiary, irreversible)

Digestion of Food
(Primary, irreversible)

Hair Perming
(tertiary, reversible)

Protein’s Ip (reversible)

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4
Q

T or F

egg is antidote for heavy metal poisoning

A

T

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5
Q

T of F

to know the number of amino acid in a chain count the amino acid not the peptide bonds

A

T

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6
Q

Bohr effect is in the structure of

A

Quaternary Structure

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7
Q

Deoxygenated Hb

A

increase in H+, CO2 evetually exhaled in the lungs

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8
Q

Oxygenated Hb

A

decrease in H+ to actively metabolizing tissue

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9
Q

T or F
High BPG in maternal Hb, Less affinity for o2,

ensures fetus with O2

A

T

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10
Q

hemoglobin’s affinity for O2?

A

Bohr Effect

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11
Q

which exhibits the bohr effect? hemoglobin or myoglobin?

A

Hemoglobin- is an allosteric protein exhibiting POSITIVE COOPERATIVITY

Myoglobin- single strand (non allosteric)

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12
Q

in hair follicles, what causes the curve in linear keratin?

A

covalent s-s bonds

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13
Q

breaking S-S to produce S-H ?

A

THIOL- (reduction) reducing agent

Hydrogenation Reaction

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14
Q

converting -SH to S-S?

A

(Oxidation H2O2) Oxidizing agent

Dehydrogenation Reagent

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15
Q

for O2 to bind with heme? it needs?

A

Fe+2

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16
Q

T or F

Basic AA forms a coordination complex with iron (II)

A

T

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17
Q

Covalent Forces?

A

Disulfide bonds or S-S bonds

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18
Q

Non Covalent Forces?

A

London, Van der Waals, pi-pi complex, salt bridge

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19
Q

aka proteinaceous particles in CNS

A

Prions

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20
Q

Structure affected by abberant prions?

A

Secondary, shift to alpha and beta sheets

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21
Q

T or F

Bovine Spongiform encephalopathy affects the CNS

A

T

symptoms: dementia, personality disorders, seizures, paralysis

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22
Q

H-bond are formed?

A

Intermolecullar

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23
Q

Secondary structure that runs ANTI Parallel

A

Beta Sheets

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24
Q

Amino acids are mostly found extending above or below the plane?

A

Aromatic AA

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25
Q

how many polypeptide strands are there in collagen?

A

3

glycine is inside
proline is outside- because its helix breaker

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26
Q

why proline is helix breaker?

A

no amino group

imino group lang nasa R side chain pa

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27
Q

level of protein structure affected by sickle disease?

A

primary

Glutamic Acid is replaced by Valine

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28
Q

symptoms of sickle cell disease?

A

clogged vessels, organ damage, hemolysis of RBC

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29
Q

T or F

zero is the least soluble

A

T

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30
Q

most soluble

A

weak acid/base and its conjugate pair

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31
Q

Net Charge at LOW pH

A

Positive (+)

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32
Q

Net Charge at High pH

A

Negative (-)

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33
Q

PI isoelectric point ph level?

A

6 - insoluble or precipitates

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34
Q

T or F

zwitterion is insoluble

A

T kasi 0 charge ang zwitterion

35
Q

At low ph ano ang nababawasan? carboxylic or amino group?

A

Carboxylic group

36
Q

at high pH ano ang nababawasan carboxylic or amino group?

A

Amino group

37
Q

special amino acids

A

cysteine, histidine, tyrosine

38
Q

pH

A

Protonation

39
Q

pH>pka

A

Deprotonation

40
Q

reaction for acid base solution?

A

Neutralization

41
Q

breaking down of a compound

A

Hydrolysis

42
Q

in presence of excess base? favors forward or backward reaction?

A

Forward —->

43
Q

in presence of excess acid? favors backward or forward reaction?

A
44
Q

Levels of protein affeted in

Heavy metal Poisoning?
Digestion of Foods?
Hair perming?
Proteins Ip?

A

Heavy metal poisoning (tertiary, irreversible)

Digestion of Food
(Primary, irreversible)

Hair Perming
(tertiary, reversible)

Protein’s Ip (reversible)

45
Q

T or F

egg is antidote for heavy metal poisoning

A

T

46
Q

T of F

to know the number of amino acid in a chain count the amino acid not the peptide bonds

A

T

47
Q

Bohr effect is in the structure of

A

Quaternary Structure

48
Q

Deoxygenated Hb

A

increase in H+, CO2 evetually exhaled in the lungs

49
Q

Oxygenated Hb

A

decrease in H+ to actively metabolizing tissue

50
Q

T or F
High BPG in maternal Hb, Less affinity for o2,

ensures fetus with O2

A

T

51
Q

hemoglobin’s affinity for O2?

A

Bohr Effect

52
Q

which exhibits the bohr effect? hemoglobin or myoglobin?

A

Hemoglobin- is an allosteric protein exhibiting POSITIVE COOPERATIVITY

Myoglobin- single strand (non allosteric)

53
Q

in hair follicles, what causes the curve in linear keratin?

A

covalent s-s bonds

54
Q

breaking S-S to produce S-H ?

A

THIOL- (reduction) reducing agent

Hydrogenation Reaction

55
Q

converting -SH to S-S?

A

(Oxidation H2O2) Oxidizing agent

Dehydrogenation Reagent

56
Q

for O2 to bind with heme? it needs?

A

Fe+2

57
Q

T or F

Basic AA forms a coordination complex with iron (II)

A

T

58
Q

Covalent Forces?

A

Disulfide bonds or S-S bonds

59
Q

Non Covalent Forces?

A

London, Van der Waals, pi-pi complex, salt bridge

60
Q

aka proteinaceous particles in CNS

A

Prions

61
Q

Structure affected by abberant prions?

A

Secondary, shift to alpha and beta sheets

62
Q

T or F

Bovine Spongiform encephalopathy affects the CNS

A

T

symptoms: dementia, personality disorders, seizures, paralysis

63
Q

H-bond are formed?

A

Intermolecullar

64
Q

Secondary structure that runs ANTI Parallel

A

Beta Sheets

65
Q

Amino acids are mostly found extending above or below the plane?

A

Aromatic AA

66
Q

how many polypeptide strands are there in collagen?

A

3

glycine is inside
proline is outside- because its helix breaker

67
Q

why proline is helix breaker?

A

no amino group

imino group lang nasa R side chain pa

68
Q

level of protein structure affected by sickle disease?

A

primary

Glutamic Acid is replaced by Valine

69
Q

symptoms of sickle cell disease?

A

clogged vessels, organ damage, hemolysis of RBC

70
Q

T or F

zero is the least soluble

A

T

71
Q

most soluble

A

weak acid/base and its conjugate pair

72
Q

Net Charge at LOW pH

A

Positive (+)

73
Q

Net Charge at High pH

A

Negative (-)

74
Q

PI isoelectric point ph level?

A

6 - insoluble or precipitates

75
Q

T or F

zwitterion is insoluble

A

T kasi 0 charge ang zwitterion

76
Q

At low ph ano ang nababawasan? carboxylic or amino group?

A

Carboxylic group

77
Q

at high pH ano ang nababawasan carboxylic or amino group?

A

Amino group

78
Q

special amino acids

A

cysteine, histidine, tyrosine

79
Q

pH

A

Protonation

80
Q

pH>pka

A

Deprotonation

81
Q

reaction for acid base solution?

A

Neutralization

82
Q

breaking down of a compound

A

Hydrolysis

83
Q

in presence of excess base? favors forward or backward reaction?

A

Forward —->

84
Q

in presence of excess acid? favors backward or forward reaction?

A

Biochemistry Lecture and Laboratory (8 decks)

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