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Chapter 3: Q. 34 (page 94)

What are the structural differences between RNA and DNA?

Short Answer

Expert verified

The RNA and DNA differ in their number of helical strands, nitrogenous base composition, sugar moiety, and molecular mass.

Step by step solution

01

Introduction

DNA and RNA are the nucleic acids of the cell. They are made up of sugar, phosphate, and nitrogenous bases.

02

Explanation

DNA contains the sugar deoxyribose while RNA contains a ribose sugar, and hence they have their name as DeoxyriboNucleic Acid and RiboNucleic Acid respectively. Again, the nitrogenous bases present in DNA are Adenine, thymine, cytosine, and Guanine, while RNA instead of Thymine contains uracil base. They both also differ in the number of helical strands. The DNA is double-stranded while RNA is a single-stranded molecule. Also, the molecular mass of DNA is larger than RNA.

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Most popular questions from this chapter

Saturated fats have all of the following characteristics

except:

a. they are solid at room temperature

b. they have single bonds within the carbon chain

c. they are usually obtained from animal sources

d. they tend to dissolve in water easily

Plant cell walls contain which of the following in

abundance?

a. starch

b. cellulose

c. glycogen

d. lactose

The building blocks of nucleic acids are ________.

a. sugars

b. nitrogenous bases

c. peptides

d. nucleotides

Describe the similarities and differences between glycogen and starch

The following chemical reactants produce the ester ethyl

ethanoate (C4H8O2):

C2H6O + CH3COOH

What type of reaction occurs to make ethyl ethanoate?

a. condensation

b. hydrolysis

c. combustion

d. acid-base reaction
See all solutions

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