ch 2- Nucleic Acids

Question 1

Monomer and its structure

Answer 1

Nucleotide: composed of

• phosphate
• pentose sugar
• nitrogen containing base (A, T, C, G)

Question 2

Polymer

Answer 2

DNA, RNA

Question 3

Function of DNA

Answer 3

Stores genetic information in cell and organism

Question 4

structure of DNA and its bases

Answer 4

• contain the sugar deoxyribose
• its bases are Adenine (A), Thymine (T), Guanine (G), and Cytosine (C)
• forms double helix, held together by hydrogen bonds

Question 5

Complementary Base pairs

Answer 5

Thymine (T) always with Adenine (A)

Guanine (G) always with Cytosine (C)

Question 6

structure or RNA and its bases

Answer 6

-contains the sugar ribose
-single stranded
-the base Uracil (U) replaces the base Thymine (T),
(Adenine, Uracil, Guanine, Cytosine)

Question 7

Why are these structures called bases

Answer 7

bc their presence raises the pH of a solution

Question 8

type of RNA

Answer 8

mRNA carries information

Question 9

ATP is made by

Answer 9

Adenosine (Adenine + Ribose) is notified by the addition of 3 phosphate groups instead of 1, Adenosine triphosphate is made

Question 10

function of ATP

Answer 10

an energy carrier in cells

Question 11

how is ADP made

Answer 11

the last 2 phosphates in ATP are very unstable, and one of them is hydrolyzed, leaving the molecule ADP (adenosine diphosphate) and an inorganic P molecule.