Explain the role of each of the following in protein synthesis in eukaryotic cells. • RNA polymerase • Spliceosomes (snRNPs) • Codons • Ribosomes • tRNA

The Central dogma includes the replication, transcription and translation.

Explanation:

RNA polymerase; It is invloved in transcription process in which the the squence of DNA is coppied to RNA known as mRNA.

Spliceosomes; The genetic information is in non-continuous form i.e introns (non-codding sequences) are present between exons. These introns are removed by spliceosomes from pre-mRNA.

Codons; Codon is the sequence of three nucleotides on mRNA that code for specific amino acid i.e AUG for methionine.

Ribosomes; These are known as protein factory because protein synthesis take place in ribosomes.

tRNA; It brought the specific amino acids for corressponding codon on mRNA for polypeptide chain.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.

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