Biology 1 DNA Study Guide

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Steps on DNA replication

1. Helicase breaks open the hydrogen bonds between bases 2. Free nucleotide are added to base pairs according to Chargaffs rules by an enzyme called DNA polymerase

Start Codon?

AUG

What term means the sides of DNA run in opposite directions?

Anti-Parrell

Where does translation happen?

Cytoplasm

Guanine bonds with?

Cytosine

What enzyme brings in this parts to fill in the missing pieces?

DNA polymerase

What is the scientific word used to describe the shape of DNA?

Double Helix

What enzyme unzips DNA?

Helicase

What holds the two sides together of a DNA strand together?

Hydrogen Bond

What makes up the "steps" of the DNA ladder?

Nitrogen bases

Do all humans have the exact same copy of DNA? Do any humans have the same copy?

No because each person has a different part of DNA that sets us apart

Where in the cell does DNA replication take place

Nucleus

Where in the cell does transcription happen?

Nucleus

Guanine?

Purine

Adenine?

Purines

What type of base has a larger 2 ring structure?

Purines

Cytosine?

Pyrimidines

Thymine?

Pyrimidines

What type of base has a smaller structure with 1 ring?

Pyrimidines

What two things make up the "sides" of the DNA Ladder?

Sugar and Phosphate

Adenine bond withs?

Thymine

End Codon?

UAG,UGA,UAA

What two scientists are credited with creating DNA model?

Watson and Crick

What does semi-converative mean?

one original and one new piece of DNA


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