How would the exchange of molecules between an organism and its environment be affected if the membrane were less permeable? (3 points)

a) Fewer membrane proteins would be needed to carry out active transport of nutrients.

b) Molecules needed for growth would have more difficulty diffusing across the membrane.

c)Organisms would be more susceptible to harmful substances crossing the membrane.

d) The membrane would rearrange to form a single phospholipid layer to transport materials.

Abucket full of water weights 4 kg and water well is 10m deep. a girl draws water from the well. it takes the girl 3 minutes to draw a bucket full of water from the well. what is the power of the girl?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.