chp. 4

Question 1

____make up nucleic acids

Answer 1

nucleotides

Question 2

three components of nucleic acid

Answer 2

Components are a phosphate group, a five carbon sugar, and a nitrogeneous base.

Question 3

The phosphate is bonded to the sugar molecule which in turn is bonded to the nitrogeneous base. Purines are A and G the pyrimidines are C and U and T.

Answer 3

nucleic acid

Question 4

the source of energy for nucleic acid synthesis

Answer 4

Hydrolysis??????

Question 5

Nucleic acids form when nucleotides polymerize.

Answer 5

polymerize.

Question 6

Polymerization reaction involves the formation of a bond between a _____on the sugar component of one nucleotide and the ______ group of another nucleotide

Answer 6

hydroxyl, phosphate

Question 7

This bond joins the 5’ carbon on the sugar of one nucleotide to the 3’ carbon on the sugar of another.

Answer 7

phophodiester linkage or a phosphodieter bond.

Question 8

_____ and _____ have a sugar phosphate backbone created by phosphodieter linkage and a sequence of four nitrogenous bases that extend from it.

Answer 8

DNA and RNA

Question 9

. Two strands of DNA side by side and in opposite directions (5’-3’ and 3’-5’) are said to be

Answer 9

antiparallel

Question 10

hold together DNA ( 3 )

Answer 10

hydrogen bonding, hydrophobic interactions, and phosphodieter linkages.

Question 11

____ goes up to secondary structure, ____ goes up to tertiary structure.

Answer 11

DNA and RNA