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Rudik [331]
2 years ago
13

Explica como crees que se originó la vida sobre el planeta tierra

Biology
2 answers:
aleksandr82 [10.1K]2 years ago
6 0
Sabemos que la vida comenzó hace al menos 3.500 millones de años, porque esa es la edad de las rocas más antiguas con evidencia fósil de vida en la tierra. Estas rocas son raras porque los procesos geológicos posteriores han remodelado la superficie de nuestro planeta, a menudo destruyendo rocas más viejas y creando otras nuevas (lo siento si es un amor incorrecto, marque como más inteligente si es correcto).
Lyrx [107]2 years ago
6 0
La pregunta del cómo empezó la vida en la Tierra es una de las más difíciles (e interesantes) que se pueden plantear. De hecho, el origen de los seres vivos encierra varias cuestiones clave: ¿cuándo ocurrió?, ¿pudo producirse más de una vez?, ¿cómo fue la transición entre la química y la biología?, ¿tuvo lugar en la Tierra o fuera de ella? Y, a medio camino entre la ciencia y la filosofía: ¿fue fruto del azar o de la necesidad?

La investigación experimental sobre el origen de la vida comenzó en la década de 1950, con el trabajo de dos científicos pioneros en una disciplina llamada química prebiótica: Stanley L. Miller y Joan Oró. Las pruebas acumuladas desde entonces nos indican que la vida probablemente comenzó hace unos 3.800 millones de años, sólo 700 millones de años después de la formación de nuestro planeta. En el gran laboratorio de química que era la Tierra primitiva se sintetizaron las primeras moléculas orgánicas, que fueron organizándose progresivamente para formar otras más largas y complejas.
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A protein biochemist attempted to determine the amino acid sequence of a decapeptide. Use the results from the trypsin, chymotry
Maksim231197 [3]

Answer:

The possible sequence of the decapeptide is Met-Val-Lys-Tyr-Thr-Trp-Ala-Arg-Pro-Phe.

Explanation:

The cyanogen bromide cleaves the carboxyl end of Met (methionine and non-peptide). Trypsin cleaves on the C-terminal of Arg and Lys, however, not on the N-terminal of Pro, which signifies that Lys is the last amino acid in T2. Hence, Met-Val-Lys----. The middle part of the sequence can be predicted from the digestion done by chymotrypsin.

The chymotrypsin cleaves on the C terminal of Phe, Trp, Tyr, however, not on the N side of Pro. CT3 exhibit Lys, Met, Tyr, Val, as Met-Val and Tyr are the initial three amino acids, therefore, Tyr must be the fourth one. Now the sequence will be Met-Val-Lys-Tyr...

CT1 possesses Ala, Arg, Phe, Pro, as chymotrypsin cleaves the C side of the Phe, thus, the last amino acid should be Phe. Also, CT1 has Ala as the first amino acid. Also, trypsin does not cleave on the N-end of Pro. Thus, the sequence of CT1 strands will be Ala-Arg-Pro-Phe.  

In CT2, chymotrypsin cleaves on the C-side of trp. Thus, the sequence of CT2 strands as Thr-Trp is found in the middle. Thus, the whole sequence of the decapeptide strand will be:  

Met-Val-Lys-Tyr-Thr-Trp-Ala-Arg-Pro-Phe.  

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3 years ago
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The term <u>Ataxia</u> means the lack of muscle coordination during voluntary movement.

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learn more about Ataxia here: brainly.com/question/16031045

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Answer:

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antiseptic1488 [7]

Answer:

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6 0
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