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Laabri

Amoeba Sisters - DNA replication

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Last updated over 3 years ago
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1.

To understand DNA replication, we need to understand the “why.” Why does DNA need to replicate before cells divide?

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2.
Mmuae Afoforo a Wobɛpaw:
Hydrogen Bond
Nitrogenous Base
Phosphate
Deoxyribose Sugar
3’ to 5’ strand
5’ to 3’ strand
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3.

DNA Replication has many key players (enzymes)! These are just a few of the major enzymes. Match the enzymes in DNA replication to their functions in DNA replication.

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Primase

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Enzyme that unzips the the double-stranded DNA by breaking the hydrogen bonds holding the bases together

Helicase

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Enzyme that builds a new DNA molecule by adding complementary strands of DNA to the original, unzipped DNA molecule

Ligase

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Enzyme that synthesizes a primer so DNA polymerase knows where to begin working

DNA Polymerase

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Enzyme that binds or "glues" fragments of DNA together

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4.

Narrate the illustration below to explain the sequence of events occurring in DNA replication.

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5.

Narrate the illustration below to explain the sequence of events occurring in DNA replication.

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6.

Narrate the illustration below to explain the sequence of events occurring in DNA replication.

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7.

Narrate the illustration below to explain the sequence of events occurring in DNA replication.

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8.

Explain what is meant by the "lagging" strand and why this occurs.