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amm1812
3 years ago
15

Why was the cow insulin an effective substitute for the human insulin?

Biology
2 answers:
Ray Of Light [21]3 years ago
6 0
Pork and beef insulins are similar to human insulin, differing only in one or a few amino acids. However, even a slight difference is enough to elicit an allergic response in some people. To overcome this problem, researchers looked for ways to make insulin that would more closely resemble human insulin.
Ne4ueva [31]3 years ago
3 0

Answer:

The insulin of the cows is very similar to the human one, differing in the composition three amino acids.

Explanation:

Insulin is a peptide hormone, with a very complex structure. Its structure is formed by 51 amino acids distributed in two chains, linked by disulfide bonds between the cysteine amino acids. Cow insulin is different in three amino acids from human insulin. This difference is quite significant to produce allergy. To solve the problem, a process known as transpeptidization must be applied, which allows the substitution of the three different amino acids with the amino acids of the human insulin sequence.

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Read 2 more answers
Sequence of amino acids in a polypeptide chain of protein molecule coresponds to the sequence of nucleotides on mRNA for that pr
tamaranim1 [39]

Answer:

330

Explanation:

A codon is the sequence of three nucleotides on mRNA that refers for particular amino acid during translation (protein synthesis) process. The four nucleotides arrange themselves in various combinations to produce different codons. The tRNA with corresponding anticodon attach the particular amino acid to polypeptide chain during translation.

Remember there is always a stop (UAA) and start codon (AUG) for the synthesis of polypeptide and stop codon does not contribute for any amino acid. It just terminate the polypeptide chain synthesis. We know that a codon is made up of three nucleotide so our calculation will be.

                                     993-stop codon =990

                                     990/3=330

So that's why 330 amino acid will be incorporated in the polypeptide chain.

6 0
3 years ago
You are studying an animal and inject fluorescein, a fluorescent dye, into a single cell on the surface epithelium of the animal
Viktor [21]

Answer:

The cells are connected by gap junctions.

Explanation:

A gathering of protein channels, which permits small molecules and ions to move between the neighboring cells is termed as a gap junction. The protein channels that form gap junctions comprise two connexons, of which one is situated in the membrane of one cell that combines and aligns with the connexon of the adjacent cell.  

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Thus, the passing of the fluorescent dye from one cell to another shows that the two cells are connected with the help of gap junctions.  

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