Respiration Flashcards
The scheme of glycolysis was given by
Otto Meyerhoff, Gustav embden and j parnas
Glycolysis is also called
GMP pathway
How many enzyme mediated reactions take place in glycolysis
10
When is water synthesised in glycolysis
Conversion of 2 phosphoglycerate to 2 phosphoenolpyruvate
In lactic acid fermentation and alcoholic fermentation the net atp gained is
2
In alcoholic fermentation how much energy trapped in atp is released
Less than 7 %
Yeast poison themselves to death when concentration of alcohol in them reaches
About 13 %
First process in respiration takes place in the
Matrix of Mitochondria( Krebs cycle )
The second process of respiration takes place in the
Inner membrame of Mitochondria ( ETS)
Pyruvic acid after it enters mitochondrial matrix undergo
Oxidative decarboxylation
Oxidative decarboxylation is catalyzed by
Pyruvic dehydrogenase
Which is the substance that enters Krebs cycle
Acetyl CoA
After isocitrate how many steps of decarboxylation for formation of alpha ketoglutaric acid
2
Total net atp formed as a result of glycolysis
8
When is gtp synthesised
Succinyl CoA to succinic acid
The first member of Krebs cycle is
OAA
Net atp from Krebs cycle
12 atp
1st 4 carbon compound I
Succinic acid
The only 5 carbon compound in Krebs cycle
Alpha keto glutaric acid
Within Krebs cycle the first release of co2 is from
Oxalosuccinic acid
Complex 1 is
NADH dehydrogenase
Ubiquinone receives Reducing equivalents from
NADH dehydrogenase ( Complex 1) and succinate dehydrogenase ( Complex 2)
How many steps of decarboxylation in Krebs cycle
2
In link reaction how many steps of decarboxylation
1
Ubiquinone transfer the electrons to
Cytochrome c through cytochrome bc1
Complex 3 is
Cytochrome bc1
Cytochrome c is small protein attached to the
Outer surface of the inner membrane
Cytochrome c helps in transfer of e from
Complex 3( cyt bc1) to complex 4 ( cyt c oxidase)
Cyt c oxidase complex contains
Cyt a and cyt a3 and 2 copper centre
Number of atp synthesised depends on
Nature of e donor
Final hydrogen acceptor in ETS
Water
The integral protein of atp synthase complex is
F0
Total atp synthesised
38 atp
If fatty acids are respired then they would be needed to degraded to
Acetyl CoA
Glycerol would enter the pathway after being converted to
PGAL
Proteins need to be degraded as protease or individual Amino acids and would enter as
Pyruvate or acetyl CoA
RQ is
Volume of CO2 evolved / volume of O2 consumed
When tripalmitine used as resp quotient
0.7
In glycolysis e are removed by
NAD
When Protein used as resp substrate rq value is
0.9
