Process of DNA Replication

Q. Which of the following is not an enzyme involved in DNA replication?

1. Helicase
2. DNA polymerase
3. Ligase
4. RNA primer

Q. DNA replication in bacteria occurs:

1. During S phase
2. Within nucleolus
3. Prior to fission
4. Just before transcription

Q. During replication of a bacterial chromosomes DNA synthesis starts from a replication origin site and:

1. is facilitated by telomerase
2. moves in one direction
3. moves in bi-directional way
4. RNA primers are involved

Q. When DNA replication begins, which of the following happens?

1. The bond between the nitrogen base and sugar of each nucleotide breaks.
2. The hydrogen bonds between the nucleotides forming a base pair break.
3. The phosphodiester bonds between adjacent nucleotides break.
4. DNA ligase unzips the double helix.

Q. DNA polymerase adds nucleotides to the 3’ end of a primer, extending the new chain in a 5’ → 3’ direction.

1. True
2. False