In which category would you place a protist that is a heterotrophic with a flagella?

Most protists move with the help of flagella, pseudopods, or cilia. Some protists, like the one-celled amoeba and paramecium, feed on other organisms. Others, such as the one-celled euglena or the many-celled algae, make their food by photosynthesis. Many of these protists can be found in a drop of pond or lake water.