DNA Replication

What is the process called in which a cell duplicates its DNA?

• Transcription

• Mitosis

• Translation

• Replication

What rule does DNA replication follow to produce two new complementary strands?

• Rule of independent assortment

• Rule of segregation

• Rule of base pairing

• Rule of dominance

What is the result of DNA replication?

• Two completely new DNA molecules

• One DNA molecule and one RNA molecule

• Two DNA molecules identical to each other and to the original molecule

• Two DNA molecules different from each other

Which enzyme is responsible for 'unzipping' the DNA molecule during replication?

• Primase

• Helicase

• RNA polymerase

• DNA ligase

What is the principal enzyme involved in DNA replication?

• DNA polymerase

• Helicase

• Topoisomerase

• Single-strand binding protein

What is the role of telomerase in DNA replication?

• Unzipping the DNA helix

• Proofreading the new DNA strand

• Joining Okazaki fragments

• Adding short, repeated DNA sequences to telomeres

How does DNA replication differ in prokaryotic and eukaryotic cells?

• Prokaryotic cells replicate DNA in the nucleus, while eukaryotic cells replicate DNA in the cytoplasm

• There is no difference in DNA replication between prokaryotic and eukaryotic cells

• Prokaryotic cells replicate DNA from a single point, while eukaryotic cells replicate DNA from multiple points

• Prokaryotic cells replicate DNA from multiple points, while eukaryotic cells replicate DNA from a single point

What triggers the beginning of DNA replication in most prokaryotic cells?

• Regulatory proteins binding to a single starting point on the chromosome

• The unwinding of the DNA helix by helicase

• The cell entering prophase of mitosis

• The presence of telomerase enzyme

During DNA replication, if the base on the old strand is adenine, what is added to the newly forming strand?

• Cytosine

• Guanine

• Thymine

• Adenine

What happens to the chromosomes produced by replication in eukaryotic cells before cell division?

• They are degraded and synthesized anew

• They immediately separate and move to opposite poles of the cell

• They remain closely associated until the cell enters prophase of mitosis

• They fuse together to form a single chromosome

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