Short segments of newly synthesized DNA are joined into a continuous strand by _____.
Part A
Short segments of newly synthesized DNA are joined into a continuous strand by _____.
- DNA polymerase
- single-strand binding protein
- ligase
- helicase
- primase
Part B
After DNA replication is completed, _____.
- each of the four DNA strands consists of some old strand parts and some new strand parts
- one DNA double helix consists of two old strands and one DNA double helix consists of two new strands
- there are four double helices
- each new DNA double helix consists of two new strands
- each new DNA double helix consists of one old DNA strand and one new DNA strand
Part C
The first step in the replication of DNA is catalyzed by _____.
- primase
- single-strand binding protein
- ligase
- helicase
- DNA polymerase
Part D
The action of helicase creates _____.
- primers and DNA fragments
- DNA fragments and replication forks
- replication forks and replication bubbles
- primers and replication bubbles
- DNA fragments and replication bubbles
Part E
Why is the new DNA strand complementary to the 3 to 5 strands assembled in short segments?
- only short DNA sequences can extend off the RNA primers
- DNA polymerase can assemble DNA only in the 5′ t3′ direction
- it is more efficient than assembling complete new strands
- the replication forks block the formation of longer strands
- DNA polymerase can assemble DNA only in the 3 t5 direction
