Diatoms are made of silica (hydrated silicon dioxide)
<span>simple organic molecules can form spontaneously under conditions like those thought to prevail early in Earth's history</span>
The control center would be the nucleus.
& I believe Messenger RNA attaches to a ribosome during protein synthesis.
The letter D in Figure 1 represents meiosis, while letter A represents mitosis. Meiosis is a reductional cell division.
Mitosis is a type of cell division where a parent cell divides to produce two genetically identical daughter cells (in this case, diploid cells).
Meiosis is a reductional cell division where a parent cell divides twice to produce four daughter cells having half of the genetic material.
Meiosis occurs in germinal cells, while mitosis occurs in somatic (body) cells.
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