Which part of cellular respiration produces the most atp molecules? a. pyruvate processing b. electron transport chain c. glycolysis d. krebs cycle?

b. electron transport chain

Explanation:

Glycolysis and Kreb's cycle are first and second stages of cellular respiration respectively. Each of these stages produces 2 ATPs from substrate level phosphorylation. The NADH and FADH2 formed during redox reactions of glycolysis and Kreb's cycle are oxidized through the electron transport chain and drive the synthesis of up to 32 ATPs.  

The proton motive force generated by oxidation of one NADH through electron transport chain drives the synthesis of around 3 ATPs. On the other hand, oxidation of FADH2 generates the proton motive force enough to drive the synthesis of around 2 ATPs.  

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.