Question

for dna polymerase to begin adding new nucleotides, it needs a starting point or a primer. the enzyme responsible for laying down an rna primer is called dna primase. this primer tells the dna polymerase where to begin. without it, dna polymerase would be unable to add new nucleotides. the rna primer is eventually removed and replaced with dna nucleotides by another type of dna polymerase.

1. dna polymerase starts adding new nucleotides at an rna
2. dna adds an rna primer that is complementary to the template strand of dna.

Explanation:

Question 26

From the text, it's stated that DNA polymerase needs a primer (RNA primer) to start adding new nucleotides. So the blank should be filled with "primer" as DNA polymerase starts adding new nucleotides at an RNA primer.

The text says "The enzyme responsible for laying down an RNA primer is called DNA primase". So the blank should be filled with "primase" as DNA primase adds an RNA primer complementary to the template DNA strand.

Answer:

primer

Question 27