Acell membrane is very specific about what it allows across. how does this the cell?
a. the cell works better when it contains fewer protein
b. it the cell absorb as many different molecules as possible
c. it is better for the cell if most molecules are prevented from entering
d. transports protein only allow enzymes to pass through the membrane

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high