Structure of DNA + RNA

Question 1

DNA nucleotide components

Answer 1

Phosphate group (CONNECTED TO PENTOSE ON 5TH CARBON)
Deoxyribose Pentose sugar
Nitrogenous base (CONNECTED TO PENTOSE SUGAR ON 2ND CARBON)

Question 2

RNA nucleotide components

Answer 2

Phosphate group
Ribose pentose sugar
Nitrogenous base

Question 3

How are the 2 strands of DNA connected

Answer 3

Hydrogen bonds between the complementary base pairings

Question 4

What bonds are formed between the phosphate and pentose sugar

Answer 4

Phosphodiester bond

Question 5

What is a chain of nucleotides called

Answer 5

Polynucleotide

Question 6

Why is DNA stable

Answer 6

Phosphodiester bonds protect chemically reactive organic bases in double helix
Higher C-G base parings means more H bonds (1:3 of C-G : H bonds) leading to increase stability

Question 7

How is DNA adapted to its function

Answer 7

Stable structure so little mutation occur, can repair this

2 separate strands joined only by H bonds, easily separated during replication

Very large molecule, lots of info stored

Phosphodiester backbone protects genetic info from chemical and physical forces