Carbohydrates 2.0 Flashcards Preview

Medicine Term One > Carbohydrates 2.0 > Flashcards

Flashcards in Carbohydrates 2.0 Deck (93)
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1

Define glycolysis

Cellular reaction splitting glucose to produce ATP without requiring oxygen

2

Products of glycolysis

Pyruvate
or
Lactic acid
ATP

3

Whats doe glycolysis do

substrate level phosphorylation

4

Gylcolysis is essential for what

Red blood cells
and vigorously exercising muscle

5

Whats is the two phases to glycolysis

preparation phase
pay of phase

6

For 1 Glc passing through the preparatory phase what is formed

2 molecules of G-3-P

7

Whats is needed at preparatory phase of glycolysis

2 ATP

8

How much ATP is gained at payoff phase of glycolysis

4ATP

9

What is the NET gain of glycolysis

2 ATP

10

What causes phosphorylation of glucose

hexokinase

11

phosphohexose isomerase catalyses what

G6P - fructose 6 phosphate

12

When is glycolysis fixed

when fructose 1 6 biphosphate is produced as only needed for glycolysis

13

what causes cleavage in glycolysis

highly symmetrical arranged energised molecule that makes it easy to split and from isomers

14

After cleavage what is doubled and can only participate in glycolysis

glyceraldehyde 3 phosphate

15

preparation phase ends when

after cleavage

16

After cleavage end products are all

Doubled

17

oxidation of glyceraldehyde 3 phosphate produces what

2 NADH

18

phosphoglycerate kinase and pyruvate kinase catalyses what reaction in glycolysis and produces

substrate-level phosphorylation reaction
ATP

19

why does NAD+ need to be regenerated

limited supply in cell

20

the pyruvate to lactate reaction allows

regeneration of NAD+

21

what is the redox balance

NAD+ produced at end of glycolysis transported back to the top, always replenished

22

NO NAD

NO GLYCOLYSIS

23

where does limited NAD+ in the cell come from

niacin

24

what is the role of NAD+

reduction of intermediate metabolites

25

NADH----> NAD+ is

dehydrogenase

26

Pyruvate can be dehydrogenased to

ethanol
lactate

27

When is pyruvate converted to lactate

cells lacking O2
Vigorously exercising muscle
RBC’s – lack mitochondria

28

Two enzymes catalysing pyruvate to ethanol

Pyruvate decarboxylase
Alcohol dehydrogenase

29

when pyruvate is converted to lactate what is oxidised

NADH

30

when muscles don’t receive O2 fast enough how is ATP produced

substrate-level phosphorylation

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