What must be true about two objects for conduction to take place? The objects must be different temperatures and they must be in contact. The objects must be the same temperature and they must be in contact. The objects must be different temperatures and they must be insulators. The objects must be the same temperature and they must be insulators.

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.