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 .
Answer:
A cap is added to the 5 end of the mRNA
Explanation:
In prokaryotes, the translation process takes place simultaneously with the transcription but the mRNA molecule after synthesis undergoes some post-translation modification which protects the mRNA from the cytosolic environment.
One of these modifications is known as capping which refers to the addition of the cap at 5' end of the mRNA. This cap is added by an enzyme called guanyl transferease and protects the end of the mRNA.
Thus, the selected option is correct.
Answer:
The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes—endosymbiosis—is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.
I hope this helps you.
This is true because eukaryotic cells are the organism cell. TRUE
Answer:
DNA to mRNA to Proteins
Explanation:
The central dogma of molecular biology describes the flow of genetic information in cells from DNA to mRNA to protein. The genes specify the sequence of mRNA molecules, which in turn specify the sequence of proteins.The translation of this information to a protein involves three mRNA nucleotides( codons) that correspond to an amino acid in the polypeptide sequence.
During transcription, a DNA sequence is read by RNA polymerase, which produces a complementary, antiparallel RNA strand. If the transcribed gene encodes a protein, the result of transcription is messenger RNA (mRNA), which produces protein in the process of translation.
During translation, a cell decodes the mRNA and assembles the a new polypeptide chain. The tRNA translates the sequence of codons on the mRNA strand. The tRNA transfers a free amino acid from the cytoplasm to a ribosome, where it is attached to the new polypeptide chain. tRNAs continue to add amino acids to the new end of the polypeptide chain until they reach a stop codon on the mRNA. The ribosome then releases the completed protein into the cell.
