Euglena is a unicellular protist. other examples of protists include amoeba and paramecium. euglena are unique because they behave like plants and like animals depending on the environment. they have a light-detecting eye spot that detects light. because of this, we might expect euglena to

A) use chlorophyll to make sugar.

Thats the answer.

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