Which of the following statements describes a benefit of most cells being small? a. small cells move more quickly than larger cells. b. small cells have a smaller surface-to-volume ratio than larger cells. c. small cells have a greater surface-to-volume ratio than larger cells. d. small cells move more slowly than larger cells.

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.