DNA Replication Remediation

Front

What is DNA replication?

Back

The process by which a cell makes an exact copy of its DNA before cell division.

Front

What does 'semi-conservative' mean in the context of DNA replication?

Back

It refers to the method of DNA replication where each new DNA molecule consists of one original strand and one newly synthesized strand.

Front

Why is DNA replication necessary before cell division?

Back

To ensure that each new cell receives a complete set of chromosomes (DNA).

Front

What are the main steps of DNA replication?

Back

1. Unwinding of the DNA double helix. 2. Complementary base pairing. 3. Joining of nucleotides to form new strands.

Front

What is the role of DNA polymerase in DNA replication?

Back

DNA polymerase is the enzyme responsible for adding nucleotides to the growing DNA strand during replication.

Front

If 20% of a DNA sample is thymine (T), what percentage is adenine (A)?

Back

20% (A pairs with T in DNA).

Front

If 20% of a DNA sample is thymine (T), what percentage is guanine (G)?

Back

30% (In DNA, A pairs with T and C pairs with G, so if T is 20%, A is also 20%, leaving 60% for C and G, which are equal).

Front

What is the significance of complementary base pairing in DNA replication?

Back

It ensures that the genetic information is accurately copied, maintaining the integrity of the DNA.

Front

What happens to the original DNA strands after replication?

Back

Each original strand serves as a template for the new strand, resulting in two DNA molecules, each with one original and one new strand.

Front

What is the difference between leading and lagging strands in DNA replication?

Back

The leading strand is synthesized continuously, while the lagging strand is synthesized in short segments called Okazaki fragments.