You are working on a team that is designing a new drug. for this drug to work, it must enter the cytoplasm of specific target cells which of the following would be a factor that determines whether the molecule selectively enters the target cells? 1) the concentration of the drug molecule that is transported in the blood 2) the phospholipid composition of the target cells plasma membrane 3) the nonpolar, hydrophobic nature of the drug molecule 4) the similarity of the drug molecule to other molecules that are transported into the target cells

answer; both surfaces of the membrane are nonpermeable

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.