Explanation:

DNA and RNA share countless characteristics. They space both created of nucleotide monomers and are read in the 5"-to-3" direction. They also share the very same complementary basic pairs, except RNA offers uracil in location of thymine; both save on computer adenine.

You are watching: Which structural characteristic is seen in rna but not in dna?

RNA walk not current in a twin helix structure, and also is typically solitary stranded.


A ar of mRNA is created of 28% guanine bases. What portion of the RNA strand is cytosine bases?


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Explanation:

Remember that mRNA is no a twin helix choose DNA; RNA is just one single strand of nucleotides. This way that we are unable come say the there are simply as many cytosine bases together guanine bases, also though they would certainly be may be to kind nucleotide pairs in DNA. Because that all us know, there might be zero cytosine bases! more information is needed prior to we deserve to make a conclusion regarding how numerous cytosine bases room in the RNA section.


Correct answer:

The sugar molecule in RNA has one an ext hydroxyl group than the sugar molecule in DNA


Explanation:

The only correct statement right here is the one concerning the types of street in the 2 molecules. RNA stands for "ribonucleic acid," i m sorry is a simple means to remember the it consists of the sugar ribose. DNA, top top the other hand, stands for "deoxyribonucleic acid." Its street is deoxyribose, i beg your pardon is identical to ribose other than it is lacking a hydroxyl (-OH) group on its second carbon. In total, RNA has three hydroxyl groups, when DNA consists of only two.

In RNA, uracil replace instead instead thymine, not guanine. DNA is usually double-stranded and also RNA is typically single-stranded (though both can exist in one of two people form). Prokaryotes save on computer both DNA and RNA. Finally, DNA is transcribed come RNA in most biological organisms, however RNA have the right to be reverse transcribed come DNA by the protein reverse transcriptase, i beg your pardon is uncovered in part viruses.


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Example question #1 : Dna and Rna framework


Which the the following statements is false?


Possible Answers:

DNA offers thymine, when RNA uses uracil


DNA and RNA utilize different sugars in their sugar-phosphate backbones


DNA is typically double-stranded, if RNA is generally single-stranded


DNA is a polyanion, if RNA is a not


Correct answer:

DNA is a polyanion, while RNA is a not


Explanation:

Both DNA and RNA room polyanions. This is just a fancy method of saying the they space polymers that negatively charged molecules. The phosphate groups in the sugar-phosphate backbone account because that this, as phosphate teams generally lug a fee of an adverse three.

DNA offers thymine and deoxyribose sugar, if RNA offers uracil and ribose sugar. While DNA is generally molded into a double-stranded helix, RNA is usually single-stranded, which permits for the binding the anticodons throughout translation.


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Example inquiry #1 : Dna and Rna structure


Which that the adhering to is characteristics of RNA?


Possible Answers:

RNA has actually a hydroxyl group on the 2’ carbon of ribose


RNA is typically double-stranded


RNA is a irreversible molecule in most cells


RNA is less stable 보다 DNA


Correct answer:

RNA has a hydroxyl team on the 2’ carbon that ribose


Explanation:

RNA and also DNA room very similar in composition, yet differ in structure and function. DNA is used to password for genetic material, while RNA is provided to generate protein products. Since DNA has a long-term goal of save on computer information and RNA has a short-term goal of raising production, it makes sense that DNA is a long-term molecule and also RNA is transient. Soon after translation, mRNA is degraded through ribonuclease (RNase). The transient nature of RNA is additionally linked to its stability. DNA have to be an extremely stable to avoid difficulties with gene storage. DNA is double-stranded to help enhance stability. In contrast, RNA can afford to be much less stable and also is easily degraded, partially because of its single-stranded structure.

Another vital difference between DNA and also RNA is the sugar component of the nucleic acid backbone. DNA supplies deoxyribose, i m sorry lacks a hydroxyl (-OH) group on the 2" carbon. RNA offers ribose, in i beg your pardon this hydroxyl team is current on the 2" carbon.


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Example question #6 : Dna and also Rna structure


Which of the following is not a true characteristics of an RNA molecule?


Possible Answers:

It deserve to be twin stranded


It includes the nucleotide uracil


It consists of deoxyribose sugar


It can be solitary stranded


Correct answer:

It consists of deoxyribose sugar


Explanation:

RNA molecules room most frequently found in a single stranded form (e.g. MRNA), but they can also be uncovered in a double stranded type (e.g. Viruses). That has four base pairs—uracil, adenine, guanine, and also cytosine—and a ribose sugar-phosphate backbone. DNA molecule contin a deoxyribose street in your sugar-phosphate backbone; thus, this price is incorrect.


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Example inquiry #7 : Dna and also Rna framework


Which the the following species of RNA is dual stranded?


Possible Answers:

Viral RNA


rRNA


tRNA


mRNA


Correct answer:

Viral RNA


Explanation:

Many types of RNA exist within cells, some are solitary stranded and others are double stranded. The adhering to are among the species of single stranded RNA: mRNA (messenger RNA), tRNA (transfer RNA), and rRNA (ribosomal RNA). Messenger or mRNA carries genetic information indigenous DNA to ribosomes because that protein synthesis. Transport or tRNA carries amino mountain to ribosome that match with mRNA codons. Last, ribosom or rRNA codes for ribosomes, i beg your pardon are necessary for protein synthesis. An instance of a double stranded RNA molecule is famous RNA. Famous RNA is the hereditary material of many viruses and also has a structure of 2 complementary strands.


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Example inquiry #1 : expertise Differences between Dna and Rna


Which the the following options is an element common come both DNA and also RNA molecules?


Possible Answers:

They deserve to both be uncovered in the nucleus


Both contain the nucleotide uracil


There is deoxyribose sugar in both of your sugar-phosphate backbones


Both are regularly single-stranded


Correct answer:

They can both be discovered in the nucleus


Explanation:

DNA is a macromolecule that has actually a double helical form. The has 4 nitrogenous base pairs (thymine, adenine, cytosine, and also guanine) and a deoxyribose-phosphate backbone. The 2 strands the the helix room joined through hydrogen bonds. Top top the other hand, RNA molecules can be double-stranded (e.g. Viruses) or single-stranded (e.g. MRNA), yet RNA most typically exists in a single-stranded form. RNA consists of four base pairs (uracil, adenine, cytosine, and also guanine) and also a ribose sugar-phosphate backbone. Regardless of their differences, these molecules re-superstructure one similarity: both DNA and RNA molecules have the right to be uncovered in the nucleus. DNA molecule reside specifically within the nucleus. RNA is spelling, orthography in the cell core and, as soon as targeted and also post-transcriptionally modified, have the right to leave via nuclear pores.


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Example inquiry #9 : Dna and Rna structure


Which that the complying with are correct about the central dogma that biology?


Possible Answers:

RNA assists with the replication the DNA i m sorry encodes information for proteins


RNA signals DNA to activate protein production


RNA encodes the details for the assembly of ribosomes, which room the web page of protein production


DNA directs the synthesis of mRNA, which in turn directs the manufacturing of polypeptides


Correct answer:

DNA directs the synthetic of mRNA, which in turn directs the manufacturing of polypeptides


Explanation:

DNA encodes info for the manufacturing of messenger RNA which climate interacts with the cell"s protein-synthesizing machinery to produce proteins. Ribosomes room the website of polypeptide synthesis yet are not coded because that by RNA. The central dogma of biologic is DNA 

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 RNA 
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 protein


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Example inquiry #10 : Dna and Rna structure


Which that the complying with are nature of RNA?


Possible Answers:

Deoxyribose, uracil, and also a globular structure


Deoxyribose, ribose, and also uracil


Ribose, thymine, and a straight structure


Deoxyribose, thymine, and a linear structure


Ribose, uracil, and also a straight structure


Correct answer:

Ribose, uracil, and also a direct structure


Explanation:

Remember the the sugar because that DNA is deoxyribose, and that for RNA is ribose. The nitrogenous bases adenine, guanine, and cytosine in DNA and RNA space the same. However, DNA which contains thymine and RNA that has uracil. The structure of DNA is a double helix. There space three various structures the RNA: linear, clover-leaf, and also globular. Likewise note that RNA is single stranded and DNA is dual stranded


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