Because the cells can only use energy in form of ATP.
Its like you can't run a diesel truck on petrol.
Down syndrome is caused by the nondisjuction of the chromosome 21.
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As I see it. Answers are all “A”
Answer: Propionly CoA
Explanation:
During oxidation of odd chain fatty acids, the odd chain are oxidized exactly in the same manner as even chains. However, after successive removal of 2 carbon units, at the end, one 3-carbon unit, propionyl CoA is formed.
Propionyl CoA is a product of beta oxidation of odd chain fatty acids.
In three steps reaction propionyl-CoA can be converted to succinyl-CoA, an intermediate of the citric acid cycle which is converted to oxaloacetate, and is used for gluconeogenesis.
If the earth didn't rotate, currents would flow in straight lines from pole to equator. :)