A student gathered four trays and four different kinds of rock samples-granite, limestone, marble, and sandstone. She tilted the trays, put a rock sample on the top end of the tray, and used a pump to force water continuously through a tube over the rocks for four days. (96 hours). She collected data and recorded observations of each rock sample at the end of each day. The purpose of the student’s investigation is to determine-

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation

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

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots