Glycolysis Flashcards

1
Q

what is glycolysis?

A
  • catabolic pathway that saves potential energy from glucose by forming ATP
  • only source of energy with out oxygen
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2
Q

where does glycolysis occur?

A

Cytoplasm

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3
Q

how many phases are there in glycolysis?

A

2 phases

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4
Q

the first stage uses how many ATP?

A

2 ATP are used in the first stage

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5
Q

Glucose is split into what 2 molecules?

A

G-3-P and DHAP (which are readily interconverted)

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6
Q

The phosphorylation of glucose uses what enzymes?

A

Glucokinase or hexokinase

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7
Q

In the 2nd step of glycolysis what is G-6-P converted to?

A

F-6-P

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8
Q

The first committed step of glycolysis is what?

A

F-6-P to F-1,6-bisP as this molecule is only used for glycolysis

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9
Q

what of the 2 triode sugars can be used in glycolysis stage 2?

A

G-3-P

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10
Q

what type of molecule is produced when G-3-P goes to 1,3-bisPG?

A

NADH

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11
Q

what 2 stages of glycolysis are energy coupled?

A

6 and 7

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12
Q

what is 3-PG converted to?

A

2-PG

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13
Q

how many ATP molecules are produced when P is transferred from PEP to ADP?

A

2

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14
Q

What is the final product of glycolysis?

A

Pyruvate

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15
Q

What is vital for glycolysis?

A

NAD+

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16
Q

where does NAD+ come from in the cell?

A

an essential vitamin

17
Q

what is pyruvate broken down to in order to regenerate NAD+?

A

Lactate

18
Q

pyruvate has many fates what is the fate in aerobic conditions?

A

CO2

19
Q

how many steps are there in the production of ethanol from pyruvate?

A

2

20
Q

what organisms produce ethanol from pyruvate?

A

yeast etc

21
Q

why is pyruvate converted to lactate in aerobic conditions in animal cells?

A

In order to regenerate NAD+ to allow glycolysis to continue

22
Q

cori cycle allows the liver to do what?

A

Repay oxygen debt built up in the muscles