DNA Structure

Question 1

Nucleotide Structure

Answer 1

S carbon sugar; deoxyribose in DNA, negatively charged phosphate group, an organic nitrogen containing compound called a base: adenine, thymine, guanine, cytosine

Question 2

Nitrogen Bases

Answer 2

Complementary pairs: adenine and thymine, guanine and cytosine

Question 3

Hydrogen Bonds

Answer 3

A weak chemical bond that occur between hydrogen atoms and more electronegative atoms like oxygen, fluorine and nitrogen; can be easily formed and broken. Hold the complementary bonds together

Question 4

Backbone

Answer 4

Made of a sugar and phosphate group and are joined by an ester bond which is very strong

Question 5

Leading Strand

Answer 5

Orientated in the 5’ to 3’ direction

Question 6

Complementary Strand

Answer 6

Runs in the 3’ to 5’ direction

Question 7

Leading and Complementary Strand

Answer 7

Bond through their nitrogen bases, are oppositely orientated (anti-parallel) to each other