A cell is placed in a solution where the solution contains a higher salt concentration than the cell. In which direction will the water move?
A. the water will move back and forth across the cell equally
B. water cannot move across the cell membrane
C. there will be a net movement of water into the cell
D. there will be a net movement of water out of the cell

Rotenone is an insecticide that is toxic

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.

Each member of a class sampled a piece of ptc testing paper. thirty people sampled the chemical. twenty persons were tasters. how many had heterozygous genes? 10 20 0-20 indeterminate