In the aerobic metabolism of proteins by chemoheterotrophs (e. g., E. coli and you):. A. Proteins are broken down into smaller peptides and eventually into amino acids by proteases (peptidases).
B. Certain amino acids may be converted to pyruvate.
C. Certain amino acids may be converted to intermediates (e. g. oxaloacetate) of the Krebs cycle.
D. Certain amino acids may be converted to acetyl-CoA.
E. All of the above are true.

the way that the mass of carbon can be conserved through cellular respiration is through a process/law called the law of conservation of mass which even tho it undergoes a process, mass is not be destroyed or changed

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.