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2ND SEM BIOCHEMISTRY > [Recalls] Prelim exams - Avengers > Flashcards

[Recalls] Prelim exams - Avengers Flashcards

1
Q

Alternative glucose transport

A

Glut 4

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2
Q

Thyroid hormone with iodine residues at 3,3’ and 5’ of the aromatic rings

A

T3

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3
Q

Fetal hemoglobin subunits

A

2 Alpha

2 Gamma

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4
Q

Arginosuccinate formed by aspartate and ________.

A

Citrulline

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5
Q

Amino acid with 4 nitrogen radicals

A

Arginine

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6
Q

Amino acid composed of tripeptide GCE

A

Glutathione

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7
Q

Unusual of glutathione

A

Presence of sulfur in Cys

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8
Q

A derivative of tryptophan

A

Serotonin

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9
Q

Defect in the branched chain a-keto acidic dehydrogenase

A

Maple syrup urine disease

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10
Q

Deficiency of this vitamin will lead to increase excretion of formimino glutamate in the urine

A

Folic acid

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11
Q

Intestinal lipase hydrolizes this to glycerol and fatty acids

A

1-monoacyl glycerol

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12
Q

Biosynthetic catabolic intermediate of cystein needed to form taurin

A

Cystein sulfinate

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13
Q

Atypical phenoketonuria type 3

A

Defect in dihydroxybiopterin reductase

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14
Q

True of P50 except:

A

It is the partial pressure of O2 that half saturates myoglobin for good storage

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15
Q

True of P50 except:

A

It is the partial pressure of O2 that half saturates myoglobin for good storage

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16
Q

Serine can be converted back to its intermediate:

A

3-phosphoglycerate

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17
Q

Glucosidic 4 carbon amino acid

A

Threonine

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18
Q

Rate limiting step in the synthesis of LC-PUFA

A

Desaturase

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19
Q

Methemoglobinemia

A
  1. Intake of excess antioxidants
  2. Genetic deficienct in NADH-dependent methemoglobin reductase system
  3. Inheritance of HbM
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20
Q

Removal of a-amino nitrogen by transmanination catalyzed by an aminotransferase is the first catabolic reaction of most of the protein amino acids. The exceptions are:

A
  1. Proline
  2. Hydroxyproline
  3. Threonine
  4. Lysine
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21
Q

Arachidonic acid

A

20:4w63

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22
Q

Completes digestion of proteins

A

Dipeptidase

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23
Q

ORESOL

24
Q

Found in the mitochondria

A

Carbamoyl phosphate synthase

25
Q

Ketogenic

A

Leucine and lysine

26
Q

Point in Redinger RN triangle

A

Bile 80%
Chole 5%
Phosphatidylcholine 15%

27
Q

Carbohydrate with a-1,6 glycosidic bond

A

a-limit dextrin

28
Q

If methionine is scarce:

A

Homocysteine is remethylated to methionine

29
Q

PKU Type III

A

Defect in dihydrobiopterin reductase

30
Q

Rate limiting enzyme activator in urea cycle

A

N acetyl glutamate

31
Q

Substrate that connects urea cycle to krebs cycle

32
Q

Valine after transamination

A

a-ketosiovalerate

33
Q

Addition of second hydroxyl group needs what cofactor:

A

Tetrahydrobiopterin

34
Q

Tryptophan

A

Indole ring

35
Q

Cofactor needed for the formation of L-dopa

A

BH4 (Tetrahydrobiopterin)

36
Q

Four nitrogen group/amino group

37
Q

Deficiency of this vitamin causes increase in FIGLU

A

Folic acid

38
Q

Derived from G-C-E

A

Glutathione

39
Q

Amino acid aside from tyrosine that is converted to fumarate and acetoacetyl CoA

A

Phenylalanine (F)

40
Q

Formed from arginine via nitric oxide synthase pathway

A

Citrulline

41
Q

Methemoglobin

A

Iron is ferric instead of ferrous

42
Q

Last to digest CHON

A

Dipeptidase

43
Q

Urea cycle precursor

44
Q

Hemoglobin M

A

His F8 is rpelaced by tyrosine

45
Q

Low oxygen will increase

46
Q

Decreased or absent in the synthesis of globin chain

A

Thalassemia

47
Q

Name this structure NH2-CO-NH2

48
Q

Common precursor of carnosine and arsenine

49
Q

Tyrosine replaces glutamine

A

Hemoglobin M

50
Q

Formed from glycine, arginine and SAM

A

Creatinine phosphate

51
Q

Catabolism of arginine forms

A

1 urea and 5 glutamate

52
Q

These amino acids have the same enzymatic pathway for the first three parts:

A

Branched AA

53
Q

All amino acid that undergo transamination except:

A
  1. Lysine
  2. Threonine
  3. Proline
  4. Hydroxyproline
54
Q

If methionine is scarce:

A

Homcysteine is remethylated back to methionine

55
Q

Pentose sugars are absrobed through:

A

Simple diffusion

56
Q

Catabolic fate of carbon skeletonof arginine:

A

Nitrogen:
2 appear directly as urea
1 appear as glutamate

Carbon:
2 appear directly as urea
5 appear as glutamate

2ND SEM BIOCHEMISTRY (33 decks)

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