If we know that apatite is the mineral that makes up the enamel of our teeth, what physical properties might you want to know about apatite when determining how to make a good toothpaste

Which of the rock examples below is most likely to be metamorphic

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

In what for do plants utilize nitrogen? why do they need nitrogen?