The sun
Explanation:
The sun is the only star in the solar system. It is the center around which the known 8 planets and their planets revolves round giving an heliocentric system.
The solar system is but one of the systems in the milky-way galaxy.
The sun, our star provides energy for the whole solar system through a nuclear process occurring at its core.
- Nuclear fusion is the source of energy that the sun possesses.
- The process requires a very high activation energy in the presence of a high pressure and temperature to start up.
- During nuclear fusion, small atomic nuclei combines into larger ones with the release of a huge amount of energy.
- The energy released provides the needed heat to set up another fusion process. The process eventually degenerates into a series of chain reaction leading to the release of energy.
- This is what happens in the a star like the sun.
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Answer;
Primitive streak.
At the onset of the embryonic period, the primitive streak appears. It will eventually become the neural tube.
Explanation;
The primitive streak is a transient structure which forms on day 15 of human development.
It marks the start of gastrulation; the process in which the inner cell mass in converted into the trilaminar embryonic disc.
It originates from the anterior epiblast.
Answer:
<u>Las 2 semejanzas son</u>...
que son tecnicas de conservacion de los alimentos usando calor
teienen el fin de destruir patogenos y sus esporas
<u>Las 3 diferencias son...</u>
En la pasteurizacion se calienta un alimento a 72ºC de 15 a 20 segundos
En la esterilizacion se calienta a temperaturas superiores a 100ºC por mas tiempo
En la esterilizacion son comidas mas diversas como carnes, pescados, etc...
The presence of paired chromosomes makes a <u>diploid </u>cell, while a single member of a pair of chromosomes makes a<u>haploid </u>cell.
Diploid cells. Meiosis is the process of cell division by which involving gametes. Cell division is just the same for sperm and egg cells, but they have distinguishable descriptions and labels in the process. Spermatogenesis is for the males’ sperm cells and oogenesis is the process for females’ egg cells. The cell division of meiosis involves the two phases, respectively meiosis I and meiosis II. Meiosis I like mitosis is the cell division that produces diploid cells<span>. These diploid cells are cells that contain a complete pair of chromosomes which is 46. The result is two diploid cells after the first meiosis. To provide clear explanation, in contrast haploid cells only contain 23 chromosomes and are created after meiosis II which is 4 in number. </span>
Answer:
The correct answer is break down of pyruvate
Explanation:
Krebs cycle is one of the most significant process of aerobic respiration.During krebs cycle pyruvate is broken down to acetyl CoA which interacts with oxaloacetate to form the first metabolite of Krebs cycle known as citrate which contain 3 -COOH group That"s why krebs cycle is also termed as Tricarboxylic acid cycle.
