Atp is a (+) allosteric effector, and ctp is a (−) allosteric effector of the enzyme atcase. both of these heterotropic effectors bind to the regulatory subunits on atcase. the substrates of atcase, aspartate and carbamoyl phosphate, bind the enzyme active site with positive cooperativity (i. e., they exert a “+” homotropic effect on activity). as the concentrations of the substrates change from values where [s]≪km to values where [s] is saturating ([s]≫km), how will the binding constants for each of the two allosteric effectors change? in other words, does atp bind atcase with higher affinity when [s] is low or high? does ctp bind atcase with higher affinity when [s] is low or high? match the letters in the left column to the appropriate blanks in the sentences on the right.

the atomic mass is the bottom number on the element.

-steel jelly

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.