An EKG with a higher QRS complex than normal in the same person... Group of answer choices Must mean that atrial repolarization is smaller than usual so we see more ventricular repolarization None of these are true Must mean that the person is exercising and innervating more cardiomyocytes Must mean that the end diastolic volume is higher Must mean that the ventricular contraction is stronger than normal

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 one energy transformation that is taking place in the photo? radiant energy to thermal energy thermal energy to nuclear energy chemical energy to thermal energy radiant energy to chemical energy

Ture or false evidence for evolution includes millions of fossils