BIO 181 ASU LATEST 2024 FORM
A REAL EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED
ANSWERS) A GRADE
How is DNA helix opened? - Answer-Helicase: protein that breaks hydrogen bonds in
DNA and separates into two strands
What is single-strand DNA-binding proteins? - Answer-SSBPs prevent the DNA from
closing again
What protein prevents tension of DNA once it is being undone? - Answer-
Topoisomerase cuts and restarts the unbinding of DNA
What is the difference between leading strand and lagging strand? - Answer-Leading
strand goes towards the fork in 5' to 3' direction, where lagging strand goes away from
fork in discontinuously 5' to 3' direction.
What discontinuously strands in lagging strand called? - Answer-Ozaki fragments
Order in Participation of DNA synthesis - Answer-1. Helices
2. Primase
3. Polymerase III
4. Polymerase I
5. Ligase
What finishes the Ozaki fragments? - Answer-Ligase closes the gap
What is the purpose of G1 phase? - Answer-Growth, brand new cell is formed
What is the purpose of S phase? - Answer-The cell will replicate its g-nome, if the cell is
ultimately dividing.
What is the purpose of G2 phase? - Answer-Clean up and nutrition, getting ready for
mitosis.
What is MPF? - Answer-Mitosis Promoting Factor that is found in the M-phase cell
A REAL EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED
ANSWERS) A GRADE
How is DNA helix opened? - Answer-Helicase: protein that breaks hydrogen bonds in
DNA and separates into two strands
What is single-strand DNA-binding proteins? - Answer-SSBPs prevent the DNA from
closing again
What protein prevents tension of DNA once it is being undone? - Answer-
Topoisomerase cuts and restarts the unbinding of DNA
What is the difference between leading strand and lagging strand? - Answer-Leading
strand goes towards the fork in 5' to 3' direction, where lagging strand goes away from
fork in discontinuously 5' to 3' direction.
What discontinuously strands in lagging strand called? - Answer-Ozaki fragments
Order in Participation of DNA synthesis - Answer-1. Helices
2. Primase
3. Polymerase III
4. Polymerase I
5. Ligase
What finishes the Ozaki fragments? - Answer-Ligase closes the gap
What is the purpose of G1 phase? - Answer-Growth, brand new cell is formed
What is the purpose of S phase? - Answer-The cell will replicate its g-nome, if the cell is
ultimately dividing.
What is the purpose of G2 phase? - Answer-Clean up and nutrition, getting ready for
mitosis.
What is MPF? - Answer-Mitosis Promoting Factor that is found in the M-phase cell
