What are the common parts of a nucleotide?

Despite the differences in mature plant cells, all of them are derived from meristem cells. the three major types of tissue systems develop from the meristem. meristems develop cells in all but which tissue?

Sexual reproduction in the parent cell will result in offspring with a) identical genetic information. b) half the genetic information. c) double the genetic information. d) four times the genetic information.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes