Question

dna vs. rna
dna and rna are both examples of a nucleic acid. nucleic acids are a type of macromolecule that functions in storing and transmitting genetic information from one generation to the next. rna is different from dna in several ways. an rna nucleotide has the sugar ribose instead of deoxyribose sugar found in dna. rna also substitutes the nitrogen base uracil for the dna base thymine. (adenine, cytosine and guanine are the same) the shape of the rna molecule is also different because the molecule consists of only one strand instead of two. like dna, rna follows base pairing rules. however, the nitrogen base uracil takes the place of thymine. in addition, dna never leaves the cell, when rna can.

1. complete the table comparing dna and rna.

	dna	rna
structure
pentose sugar that makes up the nucleotide
list the nitrogen bases
location in the cell

Explanation:

Step1: Analyze Structure

From the text and diagram, DNA has a double - helix (two - stranded) structure, RNA has a single - stranded structure.

Step2: Analyze Pentose Sugar

The text states that DNA has deoxyribose sugar and RNA has ribose sugar.

Step3: Analyze Nitrogen Bases

DNA has Adenine, Guanine, Cytosine, Thymine. RNA has Adenine, Guanine, Cytosine, Uracil.

Step4: Analyze Location

The text says DNA never leaves the cell (stays in nucleus, mainly), RNA can leave the cell (nucleus and cytoplasm).

We can now fill the table:

	DNA	RNA
Pentose Sugar that makes up the nucleotide	Deoxyribose	Ribose
List the Nitrogen Bases	Adenine, Guanine, Cytosine, Thymine	Adenine, Guanine, Cytosine, Uracil
Location in the Cell	Mainly in the nucleus (never leaves the cell)	In the nucleus and cytoplasm (can leave the nucleus)

Answer:

The filled table is as follows:

	DNA	RNA
Pentose Sugar that makes up the nucleotide	Deoxyribose	Ribose
List the Nitrogen Bases	Adenine, Guanine, Cytosine, Thymine	Adenine, Guanine, Cytosine, Uracil
Location in the Cell	Mainly in the nucleus	In the nucleus and cytoplasm