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CH531—Biochemistry > Past Exam Questions > Flashcards

Past Exam Questions Flashcards

1
Q

endomembrane system

A
  • golgi
  • smooth ER
  • rough ER
  • nuclear envelope
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2
Q

protein folding inside…

A

rough ER

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3
Q

role of Golgi

A

PTMs, packing and delivering

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4
Q

true of endocytosis?

A

utilizes receptor proteins

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5
Q

gel runs –’ to –’

A

3’ to 5’

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6
Q

3 components of nucleotides

A

sugar
base
phosphage

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7
Q

4 factors affecting 3D structure of DNA

A
  1. base pairing with H bonds
  2. base stacking with pi-pi interactions
  3. syn/anti conformers
  4. ribose conformers
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8
Q

5 steps for DNA –> protein sequence

A
  1. 3’ to 5’ complementary DNA strand
  2. 3’ to 5’ complementary mRNA strand (Ts to Us)
  3. 5’ to 3’ complementary mRNA strand (just flip)
  4. codons to amino acids
  5. draw amino acids
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9
Q

B-sheet stabilized by…

A

H-bonds between 2 parts of polypeptide so that those segments are held together side by side

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10
Q

NOT characteristic of globular protein

A

highly repetitive in 1° structure

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11
Q

Peptide sequence LEAST likely to be found in interior core of globular protein

A

DKYPGE

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12
Q

PTM example

A

phosphotyrosine

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13
Q

stabilizes alpha helices

A

H bonds between peptide groups four positions along the polypeptide

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14
Q

heteropolysaccharides

A

peptidoglycan
hyaluronic acid

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15
Q

inhibition
parallel lines on LB plot

A

uncompetitive
Vmax decreases
Km decreases

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16
Q

inhibition
flattened curve, same Vmax

A

competitive
Km increases

17
Q

inhibition
same X int, different slopes
LB plot

A

noncompetitive
Vmax decreases
Km not changed

18
Q

hexokinase inhibited by high…

A

G6P

19
Q

substrate for heme in TCA

A

succinyl CoA

20
Q

No FeS clusters

A

complex IV

21
Q

NOT involved in rxns for FA synthesis

A

oxidation

22
Q

NOT involved in rxns for FA breakdown

A

phosphorylation

23
Q

rounds of B-oxidation needed for 18-C chain FA

A

8
(18/2)-1

24
Q

moves FAs into mitochondria for B-oxidation

A

acyl-CoA shuttle

CH531—Biochemistry (11 decks)

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