Paramecium, shown here, possess that counteract the effects of osmosis. a) oral grooves b) ciliated pellicle c) contractile vacuoles d) micro and macro nuclei

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

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution