UNIT 4 DNA stucture

Question 1

phosphodiester linkage vs. Hydrogen bonding

Answer 1

phsphodiester linakage:
-dehydration sythesis
-holds nuleuotides together
-phophate group –> 3 prime end

Hydrogen bonding:
-holds base pairs together
-dipole dipole

Question 2

What is a nucleoitide made of?

Answer 2

Base + sugar + phosphate group

Question 3

DNA vs RNA

Answer 3

DNA:
-Adenine, Thymine, Cytosine, Guanine (base)
-deoxyribose (sugar)
-phosphate group
-double helix

RNA:
-Adenine, Uracil, Cytosine, Guanine (base
-ribose (sugar)
-phosphate group
-single helix

Question 4

what are the 5 and 3 prime ends?

Answer 4

5 prime: 5th carbon (on the 4th carbon) attaching to phosphate group

3 prime: 3rd carbon attaching to phosphate group (known as hydroxyle end)