How many chromosomes are in a human cell?
46 chromosomes
Are covalent bonds weak or strong? Why?
Strong!
Where is DNA located in a cell?
The Nucleus!
What are the four base pairs? (Full Names)
Adenine, Guanine, Thymine and Cytosine.
Who discovered the double helix shape? (at least last name)
James Watson and Francis Crick
Are hydrogen bonds weak or strong?
What is the shape of DNA?
A double helix.
What pairs with cytosine?
Guanine
What type of bonds do base pairs have?
Hydrogen bonds
What are the building blocks of DNA(monomer)?
Nucleotides!
What pairs with adenine?
Thymine
What type of bond do the handrails (sugar and phosphate) have?
Covalent Bonds
What is a nucleotide made of?
Sugar, phosphate, and base.
Example of Purine and Pyrimidine?
Purine: Adenine and Guanine
Pyrimidine: Cytosine and Thymine
What is Chargaff's rule?
There is a 1:1 ratio of pyrimidines and purines.
#adenine=#thymine
#guanine=#cytosine
What are pyrimidines and purines?
Pyrimidines:single ring structure
Purines: Double ring structure