MAP kinases are activated by which of the following?

Why is the barrier of the activation energy beneficial for cells? Explain how enzymes lower activation energy.

A biologist performed two series of experiments on lactase, the enzyme that hydrolyzes lactose to glucose and galactose. First, she made up 10% lactose solutions containing different concentrations of enzyme and measured the rate at which galactose was produced (grams of galactose per minute). Results of these experiments are shown in Table A below. In the second series of experiments (Table B), she prepared 2% enzyme solutions containing different concentrations of lactose and again measured the rate of galactose production. (b) Graph and explain the relationship between the reaction rate and the substrate concentration. How and why did the results of the two experiments differ?.

A biologist performed two series of experiments on lactase, the enzyme that hydrolyzes lactose to glucose and galactose. First, she made up 10% lactose solutions containing different concentrations of enzyme and measured the rate at which galactose was produced (grams of galactose per minute). Results of these experiments are shown in Table A below. In the second series of experiments (Table B), she prepared 2% enzyme solutions containing different concentrations of lactose and again measured the rate of galactose production. (a)Graph and explain the relationship between the reaction rate and the enzyme concentration.

In the context of cell communication, what is the primary role of activated protein kinases?

How do enzymes lower activation energy?

A plot of reaction rate (velocity) against temperature for an enzyme indicates little activity at 10°C and 45°C, with peak activity at 35°C. The most reasonable explanation for the low velocity at 10°C is that __________.

What is a transition state?a. the shape adopted by an enzyme that has an inhibitory molecule bound at its active siteb. the amount of kinetic energy required for a reaction to proceedc. the intermediate complex formed as covalent bonds in the reactants are being broken and re-formed during a reactiond. the enzyme shape after binding an allosteric regulatory molecule