Mechanical weathering can be caused by select all that apply. a. gravity b. acid rain c. freezing and thawing in the absence of water d. freezing and thawing in the presence of water

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

Whay is the following best defines climate

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because