Question 20 Which of the following character corresponding to stem cells? Undifferentiated cells capable of multiple round of cell division Differentiated cells capable of multiple round of cell division Large cells with multiple nuclei A cell type that forms sheets, e.g. to separate different spaces in the body Question 21 1 pts Peptidyl transferase catalyzes the formation of a peptide bond between the new amino acid and the existing polypeptide chain. Immediately following this, the polypeptide chain is only attached to the mRNA via the tRNA in which of the three sites on the ribosomes. A site P site E site E F-G