Which statement about the difference between autotrophs and heterotrophs is true?
a. au...
Biology, 03.12.2019 07:31 kenken2583
Which statement about the difference between autotrophs and heterotrophs is true?
a. autotrophs transform radiant energy into chemical energy, but heterotrophs can’t.
b. autotrophs take in only oxygen, but heterotrophs take in both oxygen and carbon dioxide.
c. autotrophs have two different electron transport systems, but heterotrophs have none.
d. autotrophs don’t have a calvin cycle, but heterotrophs do.
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Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.
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