Question

hydrogen bonds (c - g). in rna, adenine pairs with uracil (a - u).

1. describe the structure of dna.
2. what are the complementary base pairings found in dna?
3. what are the complementary base pairings found in rna?
4. what type of bond occurs between complementary base pairings in dna or rna?

a. describe or diagram where this bond is located.
information storage and transmission;
living systems store, retrieve, transmit, and respond to information essential to life processes
1.6.a; describe the structure and function of dna and rna.
1.6.a.4: structural differences between dna and rna includes:
i. dna contains the sugar deoxyribose, and rna contains the sugar ribose.
ii. dna contains the nitrogenous base thymine, and rna contains the nitrogenous base uracil.
dna is typically double stranded, while rna is typically single stranded.

1. what are the three components of a dna or rna monomer?
2. identify differences between dna and rna using the following chart:

	dna	rna
nitrogenous base difference
strandedness (traditionally)
directionality

Explanation:

1. DNA is a double - helix structure composed of two polynucleotide chains. The backbone is made of sugar (deoxyribose) and phosphate groups, and the "rungs" are nitrogenous base pairs.
2. In DNA, the complementary base pairings are adenine (A) with thymine (T) and cytosine (C) with guanine (G).
3. In RNA, adenine (A) pairs with uracil (U), and cytosine (C) pairs with guanine (G).
4. The type of bond between complementary base pairings in DNA or RNA is a hydrogen bond. It is located between the nitrogenous bases of the two strands. For example, in DNA, there are two hydrogen bonds between A - T and three between C - G.
5. The three components of a DNA or RNA monomer are a nitrogenous base, a pentose sugar (deoxyribose in DNA, ribose in RNA), and a phosphate group.

12.

	DNA	RNA
Nitrogenous Base Difference	Thymine	Uracil
Strandedness (traditionally)	Double - stranded	Single - stranded
Directionality	5' to 3'	5' to 3'

Answer:

1. DNA is a double - helix with sugar - phosphate backbone and nitrogenous base pairs.
2. A - T, C - G.
3. A - U, C - G.
4. Hydrogen bond; between nitrogenous bases of strands.
5. Nitrogenous base, pentose sugar, phosphate group.

12.
Pentose Sugar: DNA - Deoxyribose, RNA - Ribose
Nitrogenous Base Difference: DNA - Thymine, RNA - Uracil
Strandedness (traditionally): DNA - Double - stranded, RNA - Single - stranded
Directionality: Both 5' to 3'