Carbohydrate
What is the cause of the genetic disease known as Galactosemia?

Deficiency in lactase
Absence of galactose 1-P uridyl transferase
Absence of lactose synthetase
Non functioning of semnase

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Carbohydrate
The multistep pathways of metabolism are efficient because they

spread the enzymes for a pathway into several different organelles
locate all of the enzymes for a pathway in the same place within the cell
use the same substrate for all of the enzymes in the pathway
use the same enzyme for all of the substrates in the pathway

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Carbohydrate
When living organisms are cooled below some critical body temperature, the metabolic reactions within their cells cease to function properly. This malfunction occurs because

the activation energy for the reaction is raised
there is insufficient molecular motion for substrates to interact
their enzymes lose the proper three-dimensional shape
enzyme active sites become permanently bound to substrates

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