According to the cell theory, which of the following best describes the role of cells in living organisms? A:Cells are the basic building blocks of all living organisms.

B:Cells make up the tissues that are present in all forms of life.

C:Cells are produced spontaneously when living organisms need them.

D:Cells contain the same specialized organelles required for life in both prokaryotic and eukaryotic organisms.

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 the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

Match the functions to the cell types ? contraction and relaxation. conducting electrochemical signals fighting diseases carrying genetic material