Examlex
Which of the following best describes the location of arachnoid villi?
Activation Energy
The minimum amount of energy required to start a chemical reaction.
Catalysts
Substances that increase the rate of a chemical reaction without themselves undergoing any permanent chemical change.
Enzymes
Biological molecules that significantly speed up the rate of virtually all of the chemical reactions within cells.
Anabolism
The constructive phase of metabolism in which cells synthesize complex molecules from simpler ones, such as proteins from amino acids.
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