At veterinary school, Ryan and his classmates are examining the cadaver heart of a dog that was overtaken by heartworms. Disgusted but intrigued, Ryan closely examines the many worms protruding from the dog’s arteries. If he were to classify what he was looking at, in which category would Ryan MOST likely put these heartworms?

Which of the following systems in absorbing oxygen and releases carbon dioxide

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

The body of water found at number 4 on the map above is the