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What happens to the glycolytic pathway when the cells have a lot of ATP and does not need any extra energy anymore ?
What happens to the CitricAcidCycle when the cells has a lot og ATP already and does not need any extra energy anymore?(Be specific)
Vitamin D is actually a hormone and requires activation to facilitate absorption of calcium by our bones. Our vitamin D levels are controlled by intestinal absorption (foods like fish, liver and milk) and through UV radiation of our skin. It used to be that skin was an adequate method for vitamin D synthesis, but that has become less the case in recent history. Why do you think we don't get enough vitamin D synthesis from our skin anymore?
Why don't trees that grow at ornear the equator produce growth rings? What alternative methodcould be used to determine the age of such a tree?
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