Biology 12.2 The Structure of DNA
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DNA contains four kinds of nitrogenous bases:
adenine , thymine , guanine , and cytosine .
Phosphate Groups are represented as a what on a Double-Helix model?
circle
The nucleotides in DNA are joined by bonds
covalent
Nucleotides in DNA are made of three basic components:
deoxyribose; phosphate; base
What can form between certain nitrogen bases?
hydrogen bonds
In DNA, can be joined in any order.
nucleotides
The building blocks of DNA are
nucleotides
Deoxyribose sugars are represented as a what on a Double-Helix model?
pentagon
C stands for
Cytosine
Name the Scientist: This scientist showed that percentages of adenine and thymine are equal in the DNA of a species
Erwin Chargaff
G stands for
Guanine
T stands for
Thymine
A stands for
adenine
