Afriend out with this ! which statement best describe the plasma membrane of a living plant cell? a. it selectively regulates the passage of substances into and out of the cell.) b. it is composed of proteins and carbohydrates only) c. it has the same permeability to all substances found inside or outside the cell.) d. it is a double protein layer with floating lipid molecules

Ineed to know why d is the correct answer asap

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 first generation of offspring from the cross of two parents is called the a.f1 generation b.f2 generation c.short generation d.p generation