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There are several different forms of RNA, although three key types of RNA (often cited) refer to (i) messenger RNA (or mRNA), (ii) transfer RNA (or t-RNA) and (iii) ribosomal RNA (or rRNA).

mRNA functions primarily as a transfer/relay molecule (for translating genetic information stored within the DNA molecule into protein, via ribosomes). mRNAs also play a crucial role in determining how much of a protein is being expressed in vivo- generally a greater number of mRNA transcripts siginifies an actively-transcribed (and hence actively-expressed) gene. mRNA molecules are generally single-stranded (monocatenary) and short-lived compared to their parental DNA duplex.

tRNAs function as transport molecules (for ferrying amino acids to the ribosome for extension of the nascent polypeptide chain during its synthesis on the ribosome de novo). tRNAs may exhibit a characteristic secondary structure, comprising a fixed number of stem-loop/hairpin structures (bicatenary sites) and an anticodon (for association with the mRNA codon via complementary base pairing during polypeptide synthesis).

rRNA molecules are often complexed with proteins to form the ribosome (or ribozyme) which is responsible for polypeptide synthesis from their mRNA template in vivo.

In addition, other forms of RNA exist - small interfering RNA (siRNA), microRNA, small nuclear RNA (snRNA), etc. RNAs have also been characterized as fundamental in catalysing numerous in vivo reactions (as riboswitches, etc).

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13y ago
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9y ago

The three types of RNA are:mRNA - single stranded, often depicted like a piece of string

tRNA - in 2D representations, has a circular part at the bottom and three self-hydbridizing arms; resembles a four-leaf clover.

rRNA - forms part of ribosomes; appears round and 'blobby'

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The 3 types of RNA are mRNA is a long strand, the tRNA is shaped like a clover leaf pattern. The third shape is Ribosomal RNA , it is a very complex shape.

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9y ago

There are different forms of RNA. There are mainly categorized into three classes which are messenger, transfer and ribosomal and each has a specific role.

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13y ago

The three types of RNA are mRNA, rRNA, and tRNA.

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Q: Describe the shapes of the three types of RNA?
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What are the three kinda of RNA?

The three types of RNA are: mRNA (messanger RNA), rRNA (ribosomal RNA), and tRNA (transfer RNA).


How many types of RNA are their?

three types of RNA; mRNA, rRNA, and tRNA


What are three kinds of RNA molecules?

The three types of RNA include; messenger RNA (mRNA), RNA polymerase, and transfer RNA (tRNA).


What are the types of RNA?

There are three main types of RNA: messenger RNA (mRNA), transfer RNA (tRNA) and ribosomal RNA (rRNA). There are other types, such as the transfer-messenger RNA in some bacteria.


What are three types of RNA molecules?

The three types of RNA molecules include messenger RNA (mRNA), ribosomal RNA (rRNA) and transfer RNA (tRNA).


Are all three types of RNA coded by the same genes?

There are different types of genes for encoding three types of RNA. Protein coding genes are transcribed by RNA polymerase II to yield mRNA. Ribosomal RNA (rRNA) are transcribed by RNA polymerase I. Likewise, transfer RNA (tRNA) are transcribed by polymerase III.


What are 3 kinds of RNA?

There are three major types of RNA - mRNA, rRNA and tRNA.


How many different types of RNA are there in protein synthesis?

There are three main types of RNA in protein synthesis. They are ribosomal, transfer and messenger. There are other types of RNA but these are the most significant ones.


Which types of RNA is involved in protein synthesis?

There are three primary types of RNA involved in protein synthesis: messenger RNA, transfer RNA and ribosomal RNA. Whereas most types of RNA are the final products of their genes, messenger RNA (mRNA) is an intermediate in the information transfer process


What is the types of RNA?

basically there are of three types...mRNA(messenger RNA),rRna(ribosomal RNA) and tRNa(transfer RNA)....there are involved in protein synthesis .u can see how they work as a cascade of events...refer it


What are the shapes of RNA?

mRNA - messenger RNA tRNA - transfer RNA rRNA - ribosomal RNA


Ribsomal RNA is produced from the?

Ribosomal RNA is produced from the nucleolus.Ribosomal RNA consists of rRNA and protein.There are three types of RNA's in our body: mRNA, rRNA and tRNA.