Flashcard #12 - DNA Structure & Replication 2025

Front

What is DNA replication?

Back

The process by which a DNA molecule makes a copy of itself.

Front

What is the role of DNA helicase in DNA replication?

Back

DNA helicase unwinds the original DNA strand, separating the two strands.

Front

What is the leading strand in DNA replication?

Back

The strand that is synthesized continuously in the same direction as the replication fork.

Front

What is the lagging strand in DNA replication?

Back

The strand that is synthesized discontinuously in short segments away from the replication fork.

Front

What is the function of RNA primase?

Back

RNA primase lays down an RNA primer to initiate the synthesis of a new DNA strand.

Front

What is the role of DNA polymerase?

Back

DNA polymerase builds new strands by adding nucleotide bases complementary to the template strand.

Front

What is the function of DNA ligase?

Back

DNA ligase joins together Okazaki fragments on the lagging strand.

Front

What are nitrogenous bases?

Back

Nitrogenous bases are the building blocks of DNA and RNA, consisting of adenine, thymine, cytosine, and guanine.

Front

Which nitrogenous base pairs with adenine?

Back

Thymine pairs with adenine in DNA.

Front

Which nitrogenous base pairs with cytosine?

Back

Guanine pairs with cytosine in DNA.