Between glycolysis and the citric acid cycle (also known as
thekrebs cycle), there are two molecules of atp and two molecule
ofgtp generated directly. most of the energy derived from
theoxidation of glucose comes from the oxidation of
fadh2generated from the citric acid cycle.
nadph generatedfrom the citric acid cycle.
nadh generatedfrom the citric acid cycle.
nadh generatedfrom glycolysis.

The correct answer will be option-NADH generated from the citric acid cycle.

Explanation:

During cellular respiration, few ATP molecules are synthesized by substrate-level phosphorylation in glycolysis and citric acid cycle.

The process also produces high energy equivalents which are NADH and FADH₂ during the citric acid cycle. Two pyruvate molecules generate 6 NADH and FADH₂ molecules. These molecules release electron and hydrogen during the electron transport chain which is utilized to generate the ATP.

Each NADH produces 3 ATP molecule whereas FADH₂ molecule produces 2 ATP molecules. Since 6 NADH (6x3=18 ATP) produced and 2  FADH₂ (2x2).

Thus, NADH provides the highest amount of ATP molecules.

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.