During sleep, the body provides fuel to the brain during sleep, the body provides fuel to the brain by breaking down body proteins. by converting glucose to glycogen. the body does not provide fuel to the brain during sleep. by engaging in ketosis

1. environmental factors, such as ph and temperature, can affect the function of an enzyme. a. true b. false 2. which of the following is an organic molecules (ex. vitamins) that an enzyme? a. coenzyme b. product c. active site d. substrate 3. how do enzymes effect the speed of a chemical reaction? a. they speed it up b. they slow it down c. they have no effect on the speed of a reaction 4. during a chemical reaction, an enzyme is used up so that it can only be used one time. a. true b. false 5. which of the following results from a chemical reaction that is catalyzed by an enzymes? a. active site b. product c. substrate d. coenzyme

Why is excretion necessary to maintain homeostasis?

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute