Pyruvate dehydrogenase is a large, highly integrated complex containing many copies of three distinct enzymes. there are five coenzymes involved in its catalytic activity: nad+ , fad , coenzyme a, lipoamide, and thiamine pyrophosphate (tpp or tdp). the coenzymes can be classified depending on how they participate in an enzymatic reaction. a coenzyme prosthetic group is tightly bound to the enzyme and remains bound during the catalytic cycle. the original coenzymes are regenerated during the catalytic cycle. on the other hand, a coenzyme cosubstrate is loosely bound to an enzyme and dissociates in an altered form as part of the catalytic cycle. its original form is regenerated not by the cycle, but by another enzyme. which are coenzyme prosthetics? a. nad+ b. tpp or tdp c. lipoamide d. fad e. coenzyme a

What do we call an individual that has inherited two identical alleles for the same trait? a.homozygous b.heterozygous c.monozzygous

18. determine whether each stateme blank space given. ach statement is true (t) or false (f). place your answer in the 8. when a cell is put into an isotonic solution, individual wat put into an isotonic solution, individual water molecules cannot move back and forth across the cell membrane. d. when a cell is put into a hypertonic solution, there is a net movement of water molecules across the cell membrane into the cell. c. when a cell is put into a hypotonic solution, there is a net movement of water molecules across the cell membrane out of the cell. d. the movement of any solvent across a semi-permeable membrane is called osmosis. e. carrier proteins have the ability to change shape and physically move molecules across the cell membrane. f. in facilitated diffusion, the concentration of the molecules to be moved across the cell membrane is higher inside the cell.

How can scientists use the fossil record to find evidence of relationships between different species?