Euglena are protists that contain photosynthesizing chloroplasts. they can also engulf and absorb organic molecules. how would euglena be categorized based on their metabolism

Answer;

-Mixotrophs

Euglena would be categorized as mixotrophs based on their metabolism.

Explanation;

-Mixotrophy is the ability of an organism to be autotrophic and heterotrophic at the same time. Therefor an organism that can survive in water as a chemolitho-autotroph and, at the same time, is capable of ingestion and digestion of organic compounds from human blood, is called a mixotroph.

For example; Euglena is a mixotrophic organism because it is both holophytic; since it produces her own food through photosynthesis in chloroplasts, and also a heterotrophic organism because it absorbs elaborated food, i.e. biotic products.

it's anything that aren't producers and consumers.

explanation:

you've got to be clear on what "this" is

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