molecular genetics (DNA structure)

Question 1

components of DNA

Answer 1

sugar, phosphate group, and a nitrogenous base

Question 2

one DNA component (all 3)

Answer 2

nucleotide

Question 3

what form does DNA take

Answer 3

double helix

Question 4

what type of bond links the nitrogenous bases

Answer 4

hydrogen bonds

Question 5

what type of sugar is DNA made up of

Answer 5

deoxyribose (missing oxygen from a hydroxyl group on carbon 2?)

Question 6

what type of bond forms between deoxyribose and the nitrogenous base

Answer 6

glycosyl bond

Question 7

bond the forms between the phosphate group and the sugar in DNA

Answer 7

ester or phosphodiester

Question 8

four nitrogenous bases

Answer 8

adenine, cytosine, guanine, and thymine

Question 9

which nitrogenous bases are purines

Answer 9

guanine and adenine

Question 10

which nitrogenous bases are pyrimidines

Question 11

when was the structure of a nucleotide discovered

Answer 11

1920s

Question 12

who discovered the pairing pattern

Answer 12

Erwin chargaff 1949

Question 13

the general structure of DNA in regards to each strand

Answer 13

• anti-parallel strands of nucleotides
• one run 5´-3´ and vice versa

Question 14

DNA dimensions

Answer 14

• diameter of 2 nanometers
• fully twist every 10 nucleotides- the ————– diameter of the twist is 3.4nanometers
• 0.34 nm between each base pair
  (same for every DNA strand on earth)

Question 15

what differentiates species

Answer 15

nitrogenous base pair sequence