DNA Replication and Enzymes

DNA Replication and Enzymes

Assessment

Interactive Video

Biology, Science

7th - 10th Grade

Medium

Created by

Jackson Turner

Used 6+ times

FREE Resource

The video explains DNA's role as the cell's director, coding for traits and controlling cell functions. It introduces DNA replication, a process occurring in the nucleus during interphase, not during cell division. Key enzymes like helicase, polymerase, primase, and ligase are discussed, highlighting their roles in unzipping, building, initializing, and gluing DNA strands. The video details the replication process, emphasizing the anti-parallel nature of DNA strands and the challenges of replicating the lagging strand with Okazaki fragments. It concludes with the semi-conservative nature of replication and the proofreading ability of DNA polymerase.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary role of DNA in cells?

To protect the cell from damage

To transport nutrients

To direct cell activities and code for traits

To provide energy

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During which phase does DNA replication typically occur?

Prophase

Cytokinesis

Interphase

Mitosis

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which enzyme is responsible for unzipping the DNA strands?

DNA Polymerase

Ligase

Primase

Helicase

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of primase in DNA replication?

To proofread DNA

To create RNA primers

To build new DNA strands

To glue DNA fragments together

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of DNA polymerase in the replication process?

To unzip DNA strands

To add DNA bases to new strands

To bind DNA strands together

To create RNA primers

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the small fragments on the lagging strand called?

Helicase fragments

Polymerase fragments

Okazaki fragments

Ligase fragments

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which direction does DNA polymerase work?

East to West

North to South

5' to 3'

3' to 5'

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