Can we draw the following hypothesis from the context?

Context:

Ribonuclease V1 (RNase V1) is a ribonuclease enzyme found in the venom of the Caspian cobra ("Naja oxiana"). It cleaves double-stranded RNA in a non-sequence-specific manner, usually requiring a substrate of at least six stacked nucleotides. Like many ribonucleases, the enzyme requires the presence of magnesium ions for activity.

Hypothesis: Ribonuclease requires the presence of magnesium ions to slow its activity.
No