Answer: One of the primary differences between DNA and RNA is that DNA is double-stranded while RNA is single-stranded.
Answer:
Explanation:
the process of transcription is defined as a process by which cells are able to allow for expression of their genes. this involves how DNA is read and written into RNA (mainly messenger RNA). mRNA production then guides the synthesis of various proteins. the process of transcription occurs in three stages which include initiation, elongation and termination. when certain signals interact with the promoter of a gene, transcription is initiated allowing for some regions of the DNA to be transcribed in the 5 to 3' direction. such that the newly synthesized strand of mRNA is complementary to the non coding sequence. Controlling the production of mRNA in the nucleus allows the regulation of gene expression.
mRNA codons determine which amino acid will be added to the growing polypeptidic chain. tRNA anticodons pair these codons and add the correct amino acid. <em>The </em><em>dipeptide</em><em> formed will be </em><em>Cysteine-Alanine</em><em>.</em>
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Let us review a few points,
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In protein synthesis, the ribosome reads mRNA in the 5´ to 3´ direction.
- According to the codons being readen, tRNA transfers the correct amino acids to build the polypeptide chain.
- A codon is a short sequence of three nucleotides that store the genetic information for the aminoacids´ assembly.
- Each codon represents one amino acid used to build the protein.
- Each tRNA has two important sites. One of them that couples with the codon of the mRNA molecule, named anticodon. The other site couples with an amino acid.
- The anticodon is a short sequence of bases that pairs with mRNA codons.
- tRNA adds amino acids following the codons sequence in the mRNA molecule.
- The protein grows from the amino terminus to the carboxy terminus.
- Adenine forms pairs with Uracyl ⇒ A↔U
- Guanine pairs with Cytosine ⇒ C↔G
In the exposed example,
→ mRNA ⇒ codons ⇒ 5'-UGC - GCA-3'
→ tRNA ⇒ anticodons ⇒ ACG CGU
→ proteins ⇒ amino acids ⇒ Cys Ala ⇒ Codon UGC codes for Cysteine
⇒Codon GCA codes for Alanine
So, for the given sequence of mRNA, tRNA anticodons are ACG and CGU. And the added amino acids are <em>Cysteine and Alanine</em>.
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Cerebellum
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NH3 since they are both non metals
Answer:C
