DNA Replication Process

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Questions and Answers

In the first stage of DNA replication, what happens to the double helix?

The double helix unwinds.

What happens to the DNA strands in the second stage of DNA replication?

The strands separate, an enzyme breaks weak bonds, each strand will now act as a template for formation of a new strand.

In the third stage, what components from the cytoplasm enter the nucleus and attach to exposed complementary pairs?

DNA bases (A/T/G/C)

Each side of the DNA molecule acts as a template for a new strand of DNA.

True (A) Signup and view all the answers

What are the components of each new section of DNA after replication?

1/2 original DNA and 1/2 new DNA Signup and view all the answers

Each new section of DNA is identical to the original DNA.

True (A) Signup and view all the answers

What is the final step in DNA replication regarding the newly formed double strands?

Each new double strand rewinds to form a double helix. Signup and view all the answers

What happens in the second stage of DNA replication?

Strands separate, an enzyme breaks weak bonds, and each strand acts as a template for a new strand. Signup and view all the answers

What materials enter the nucleus during the third stage of DNA replication and what do they do?

DNA bases (A/T/G/C) from the cytoplasm attach to exposed complementary pairs. Signup and view all the answers

In DNA replication, each side of the DNA molecule acts as a template for a new strand of DNA.

True (A) Signup and view all the answers

Describe the composition of each new section of DNA after replication.

Each new section is 1/2 original DNA and 1/2 new DNA, and is identical to the original DNA. Signup and view all the answers

In the final stage of DNA replication, each new double strand rewinds to form a double helix.

True (A) Signup and view all the answers

What happens during the first stage of DNA replication?

The double helix unwinds. Signup and view all the answers

What occurs during the second stage of DNA replication?

Strands separate, an enzyme breaks weak bonds, each strand will now act as a template for formation of a new strand. Signup and view all the answers

What happens in the final stage of DNA replication?

Each new double strand rewinds to form a double helix. Signup and view all the answers

Flashcards

Step 1 of DNA replication

The DNA double helix unwinds, separating the two strands.

Step 2 of DNA replication

Strands separate as enzymes break weak bonds, each now a template for a new strand.

Step 3 of DNA replication

DNA bases from the cytoplasm enter the nucleus and attach to complementary pairs on the template strands.

DNA as a Template

Each side of the original DNA molecule acts as a template for the creation of a new DNA strand.

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DNA Replication Result

Each new DNA section consists of one original strand and one new strand, creating an identical copy of the original DNA.

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Step 6 of DNA replication

Each new double strand rewinds to form a double helix structure.

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Study Notes

DNA replication happens in several stages.
The double helix structure of DNA unwinds.
The DNA strands separate as an enzyme breaks the weak bonds between them.
Each separated strand serves as a template for creating a new strand.
DNA bases (A, T, G, C) from the cytoplasm go into the nucleus.
These bases attach to their complementary pairs on the template strands.
Each side of the original DNA molecule acts as a template.
The result is a new section of DNA consisting of half original and half new DNA.
Each new DNA section is identical to the original DNA.
Each new double strand rewinds to form a double helix.