<span>Intracellular digestion takes place in animals without a digestive tract, in which food items are brought into the cell for digestion. Extracellular digestion is a process in which animals feed by secreting enzymes through the cell membrane onto the food.</span><span>
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D.) A trophic level
This is your answer I hope it helps.
It’s called a branch point, represents where a single lineage evolved into a distinct new one.
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.
