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Answer:
The correct statements are statement 3 and 4.
Explanation:
An alignment of three nucleotides within the RNA or DNA that assists in coding a specific amino acid or instructs the cell to either cease or begin the synthesis of protein is termed as a codon. A sum of 64 probable codons are found that comprise three of the four possible nucleotides, however, only 20 amino acids are present in the majority of the biological species. Â
The given third statement is true as there are some of the codons known as stop codons that plays an essential role in terminating the process of protein synthesis. Â
The given fourth statement is also true as codons known as stop codons are not identified by tRNAs, they are identified by ribosomes. Â
The following statements are true -
- Some codons are recognized by proteins, not by tRNAs.
- All possible codons are used, but not all codons specify an amino acid
A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis.
- Some codons code for stop codons which are responsible to stop the process of translation
- All possible codons are used, but not all codons specify an amino acid
- the ribosome will recognize them, so it is true that some codons are recognized by proteins, not by tRNA
Thus, the following statements are true -
- Some codons are recognized by proteins, not by tRNAs.
- All possible codons are used, but not all codons specify an amino acid
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