3. How many chromosomes does each cell in our bodies have?
4. Where is DNA kept in a cell? Curharyotic cells
5. DNA is composed of what 3 parts? ehosphate
Deoxyribose and four nitrogenous bases
6. What are the 4 Nitrogenous bases? Adenine , Guanine
Cytosine and Thymine
7. DNA has what shape? Double helix
8. How are DNA's side structures of DNA related (shape, composition)
to the 3 main parts?
0 Two of the bases, adenine & quanine
have a double ring structure characteristic
Of a type of chemical called a purine.
29. How are the sides of DNA named?
10. How are the Nitrogenous bases paired?
Bonds with
bonds with
and