Replied
3. Which of the following is found in RNA
nucleotides, but NOT in DNA nucleotides?
A Nitrogen-containing base
B Phosphate group
C Ribose sugar
D Deoxyribose
ude

Explain why ecosystem diversity results in species diversity in a healthy biosphere

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic

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.