the Article an astronaut reveals what life in space is really like what did she see ,smell, touch, taste, and hear

Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time

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

Classify the structures as homologous or analogous, depending on their structure and function.