A new type of worm was discovered in some bananas on a cargo ship.

The correct option is Eukarya.

Explanation:

A prokaryotic organism does not contain membrane-bound organelles. Bacteria and archaea both are prokaryotes as they lack membrane-bound organelles. These organisms also lack a well-defined nucleus.

Eukaryotes have membrane-bound organelles. Worms have membrane-bound organelles and also have a well-defined nucleus in their cells.

In fact, every organism other than bacteria or archaea is considered to be eukaryotic. Hence, the worm discovered in some bananas on a cargo ship will be a eukaryote.

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enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products