DNA replication

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/dna-replication

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the process name?DNA replication
2. What is the key enzymes involved?Helicase, DNA polymerase (multiple types), primase, ligase, topoisomerase
3. Why do cells copy DNA before they divide?Copying DNA ensures that new cells have the same genetic information, which helps the body grow, repair itself, and pass traits to the next generation.
4. How does a cell start copying its DNA?Special proteins attach to special spots called origins, then helicase unwinds the double helix, creating a bubble with two forks that move in opposite directions.

Origin of Replication: Specific DNA sequences where replication begins, recognized by initiator proteins.
Okazaki Fragments: Short DNA segments synthesized discontinuously on the lagging strand during replication.
Telomeres: Protective caps at the ends of linear chromosomes that are shortened with each round of replication.