<span>simple organic molecules can form spontaneously under conditions like those thought to prevail early in Earth's history</span>
Answer:
Cancer cells achieve proliferative immortality by activating or upregulating the normally silent human TERT gene (hTERT) that encodes telomerase, a protein with reverse transcriptase activity that complexes with other proteins and a functional RNA (encoded by hTR, also called hTERC) to make a ribonucleoprotein enzyme.
Explanation:
A rare cell that escapes crisis almost universally does so by reactivating telomerase and this cell can now become a cancer cell with limitless potential to divide. Almost all cancer cells have short telomeres and thus inhibitors of telomerase should drive such cancer cells into apoptotic cell death. Yet, each time a cell divides, the telomeres get shorter. When they get too short, the cell no longer can divide and becomes inactive or "senescent" or dies. This process is associated with aging, cancer, and a higher risk of death.
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Answer:
The glucose making part of photosynthesis takes place in the stroma
explanation:
Stroma is the colorless liquid that surrounds the grana in the chloroplast inside plant cells. The stroma contains grana, and stacks of thylakoids in which photosynthesis is started before the chemical changes are completed in the stroma itself. The stroma functions by synthesizing organic molecules from water and carbon dioxide. In the stroma, an enzyme removes the carbon from carbon dioxide, and then combines it with hydrogen and oxygen and to form a simple carbohydrate molecule (glucose).
Answer:
Farmers Produce More Food for War in World War II. As the war approached, it got worse for farmers before it got better. Farming exports fell 30 to 40 percent below the average of the ten depression years that preceded the war. Grain exports, for example, fell 30 percent in one year between September 1939 and 1940.
Explanation:
