A researcher applies a toxin to a species of green algae to block the regeneration of ribulose bisphosphate. She then supplies CO2, labeled 14C, to the algae. Finally, she washes away the toxin to restore the regeneration of ribulose bisphosphate. Where is 14C expected to be found before and after the toxin is washed away? Before, it should be found in glyceraldehyde-3-phosphate, but not in ribulose bisphosphate. After, it should be found in glyceraldehyde-3-phosphate, but not in ribulose bisphosphate. Before, it should be found in glyceraldehyde-3-phosphate, but not in ribulose bisphosphate. After, it should be found in both glyceraldehyde-3-phosphate and ribulose bisphosphate. Before, it should be found in both glyceraldehyde-3-phosphate and ribulose bisphosphate. After, it should be found in glyceraldehyde-3-phosphate, but not in ribulose bisphosphate Before, it should be found in both glyceraldehyde-3-phosphate and ribulose bisphosphate. After, it should be found in both glyceraldehyde-3-phosphate and ribulose bisphosphate.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

1. what is the relationship between the shape of an enzyme and the reactions they catalyze?

2. how does an enzyme inhibitor work?

separate your answers so i dont get confused : )

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.