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Coronary vessels supply blood to heart muscles ..blockage in them will cause hypoxia in heart muscles which leads to heart attack
Answer:
As this is DNA replication, this is the unwinding process
Explanation:
In DNA replication, the parent DNA to be replicated is unwound to enable access of the replication machinery (replisome) to this genetic material. The origin of replication will be identified first, which in the prokaryotes is only one, and in the eukaryotes, we have many. This sites are recognized by specific sequences on the genome. after this, melting of the DNA occurs at this origin creating a replication bubble and two replication forks. This allows for the unwinding of the DNA by the enzyme Helicases in the direction of the replication fork. Another enzyme present in this step is also the single strand binding proteins (SSB). These proteins function in the prevention of re-annealing of the unwound DNA strand by attaching themselves to each strands. Another enzyme called the topoisomerases also function here by reducing the torque (twisting) produced upstream of the replication fork as result of DNA unwinding. An example is the gyrase.
Answer:
El adenosín trifosfato (ATP), es la moneda energética de los seres vivos. Para poder ser sintetizado, los organismos requieren oxidar los sustratos energéticos de la dieta, proteínas, grasas y carbohidratos. Inicialmente estas sustancias tienen vías metabólicas separadas hasta alcanzar en su degradación un metabolito común que es el acetil CoA. A partir de este punto en el ciclo de Krebs, con producción de CO 2 e hidrogeniones, estos últimos se transportan por reducción de óxido a la cadena respiratoria donde se formará agua endógena y ATP. Para lograr esta oxidación de los sustratos con alta producción de energía, es indispensable el oxígeno que actúa como comburente en las reacciones.
Explanation:
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