Nuclear energy is currently used in which three kinds of vehicles? O cars, submarines, spacecraft
O submarines, ships, spacecraft
O spacecraft, airplanes, cars
O airplanes, submarines, ships

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

What is the most abundant vertebrate on earth?

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?