How many fadh2 molecules are produced in the krebs cycle?
a- 1
b- 2
c- 3
d- 4

B- 2

Explanation:

In aerobic respiration, the cell harvests energy from glucose molecules in a sequence of four major pathways: glycolysis, pyruvate oxidation, the Krebs cycle, and the electron transport chain. In the process of aerobic respiration, glucose is completely used. The 6-carbon glucose molecule is first cleaved into a pair of 3-carbon pyruvate molecules during glycolysis. One of the carbons of each pyruvate is then lost as CO2 in the conversion of pyruvate to acetyl-CoA; two other carbons are lost as CO2 during the oxidations of the Krebs cycle. All that is left to designate the passing of the glucose molecule into 6 CO2 molecules is its energy, some of which is preserved in 4 ATP molecules and in the reduced state of 12 electron carriers. 10 of these carriers are NADH molecules; the other 2 are FADH2.

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.