The role of enzymes in biological systems is to catalyze chemical reactions. in 1894 chemist Emil Fisher proposed the lock and key analogy of enzyme action. This analogy explains the specific action of an enzyme with a single substrate. Compare the two models seen here. How do they BOTH represent the lock and key analogy?​

Which is the best way to define a common in environmental science a. a worthless resource b. shared resource c. a rare resource d. a typical resource

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline.which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used

Which greenhouse gas is emitted when burn fossil fuels for energy? a.nitrogen b.oxygen c.carbon dioxide d.helium