Pairs and Math
Thymine
What do we call the sides of DNA?
The sugar-phosphate backbone
Do living, nonliving, or both have DNA?
Living
What is the first step of DNA replication?
The DNA is unzipped by the DNA helicase
After DNA replication is complete, are the 2 copies of DNA the exact same or different?
The exact same
What pairs with cytosine?
Guanine
What are the 3 pieces of a nucleotide?
Sugar, phosphate, nitrogen base
What does DNA determine?
What you look like/ your blueprint
What is the second step of DNA replication?
DNA polymerase reads the nitrogen bases to find their match
If the DNA polymerase reads a chunk of DNA that says "TTAC" what would it's complimentary pairs be?
AATG
Which piece of a nucleotide changes to determine genetics?
Nitrogen base
Who took the first photo of DNA?
Rosalind Franklin
What does DNA stand for?
Deoxyribonucleic Acid
What are the names of the enzymes that unzip (break hydrogen bonds) and read the nitrogen bases?
Helicase and Polymerase
Why is DNA called semi-conservative?
(answers may vary slightly) because each new strand is half the old one, or half of each is saved, or some is saved
What are the 4 nitrogen bases?
Adenine, cytosine, guanine, thymine
What 2 word phrase do we use to describe the shape of DNA?
Double Helix
Where do we find DNA?
In the nucleus of a cell
How many copies of DNA do we end up with at the end of DNA replication?
Two
What is the term for where the DNA is just starting to split apart, behind the DNA helicase?
Replication fork
If I have 15% Adenine, what percent cytosine will I have in a segment of DNA?
35% of cytosine
What type of bond holds the nitrogen bases together?
Hydrogen bonds
Nucleotides
What direction does the DNA polymerase read the DNA?
3' to 5'
What does the sequence of the nitrogen bases determine?
Your genetics!