Dna replication of chromosomal dna in a cell requires all of the following, except a) dna polymerase b) primase c) helicase d) rna polymerase e) ligase

RNA polymerase

Explanation:

DNA polymerase, primase, helicase, and ligase are all enzymes required by cell for DNA replication. RNA polymerase is an enzyme for RNA synthesis and not DNA.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.