Sickle cell anemia results from the 6th amino acid in the hemoglobin protein being valine instead of glutamine (glutamic acid). What physical change / results does this cause in red blood cells?

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voluntary muscles are controlled by the cerebellum.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.

condenser is used to focus in the light microscope.

answer n81.2