Role of RNA in Biological Processes and Protein Synthesis

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2. Ribonucleic acid (RNA)
 
Ribonucleic acid (RNA) 
is a 
 molecule essential in various
biological roles in 
,
and 
 of 
. RNA and 
 are 
, and, along
with 
 and 
, constitute the four
major 
 essential for all known forms of 
. Like DNA,
RNA is assembled as a chain of 
, but unlike DNA it is more
often found in nature as a single-strand folded onto itself, rather than a
paired double-strand. Cellular organisms use 
 (
mRNA
)
to convey genetic information (using the 
 of 
, and 
, denoted by the letters
G, U, A, and C) that directs synthesis of specific proteins.
Many 
 encode their genetic information using an RNA 
.
genomevirusescytosineadenineuracilguaninebasesnitrogenousmessenger RNAnucleotideslifemacromoleculescarbohydratesproteinslipidsnucleic acidsDNAgenesexpressionregulationdecodingcodingpolymeric
 
Structure of RNA
 
There are three major types of RNA that participate in the
process of protein synthesis: rRNA, tRNA, and mRNA. Like DNA,
these three types of RNA are unbranched polymeric molecules
composed of nucleoside monophosphate s joined together by
3'
5'-phosphodiester bonds. However, they differ from DNA in
several ways. For example, they are considerably smaller than
DNA, contain ribose instead of deoxyribose and uracil instead of
thymine, and exist as single strands that are capable of folding
into complex structures. The three major types of RNA also
differ from each other in size, function, and special structural
modifications.
 
Some RNA molecules play an active role within
cells by catalyzing biological reactions,
controlling 
gene expression
, or sensing and
communicating responses to cellular signals.
One of these active processes is 
protein
synthesis
, a universal function where RNA
molecules direct the assembly of proteins
on 
ribosomes
. This process uses 
transfer
RNA
 (
tRNA
) molecules to deliver 
amino acids
 to
the ribosome, where 
ribosomal RNA
 (
rRNA
) then
links amino acids together to form proteins.
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Ribonucleic acid (RNA) is a crucial polymeric molecule in various biological functions including coding, decoding, gene regulation, and expression. It works alongside DNA and plays a key role in protein synthesis. There are three major types of RNA - rRNA, tRNA, and mRNA, each with specific functions in the process. RNA can also catalyze reactions, control gene expression, and respond to cellular signals. Understanding the structure and functions of RNA sheds light on its importance in the molecular machinery of life.

  • RNA biology
  • Gene expression
  • Protein synthesis
  • Molecular biology
  • RNA structure

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  1. 2. Ribonucleic acid (RNA) Ribonucleic acid (RNA) is a polymeric molecule essential in various biological roles in coding, decoding, regulation, and expression of genes. RNA and DNA are nucleic acids, and, along with lipids, proteins and carbohydrates, constitute the four major macromolecules essential for all known forms of life. Like DNA, RNA is assembled as a chain of nucleotides, but unlike DNA it is more often found in nature as a single-strand folded onto itself, rather than a paired double-strand. Cellular organisms use messenger RNA (mRNA) to convey genetic information (using the nitrogenous bases of guanine, uracil, adenine, and cytosine, denoted by the letters G, U, A, and C) that directs synthesis of specific proteins. Many viruses encode their genetic information using an RNA genome.

  2. Structure of RNA There are three major types of RNA that participate in the process of protein synthesis: rRNA, tRNA, and mRNA. Like DNA, these three types of RNA are unbranched polymeric molecules composed of nucleoside monophosphate s joined together by 3' 5'-phosphodiester bonds. However, they differ from DNA in several ways. For example, they are considerably smaller than DNA, contain ribose instead of deoxyribose and uracil instead of thymine, and exist as single strands that are capable of folding into complex structures. The three major types of RNA also differ from each other in size, function, and special structural modifications.

  3. Some RNA molecules play an active role within cells by catalyzing biological reactions, controlling gene expression, or sensing and communicating responses to cellular signals. One of these active processes is protein synthesis, a universal function where RNA molecules direct the assembly of proteins on ribosomes. This process uses transfer RNA (tRNA) molecules to deliver amino acids to the ribosome, where ribosomal RNA (rRNA) then links amino acids together to form proteins.

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