the science calorie (little c) is a measure of heat energy the food calorie (big C) is a measure of energy that we burn, but it is equal to 1,000 science calories so 1 big C is equal to 1,000 little c's.
Protists are a group made up of protozoa, unicellular algae, and slime molds. We will concentrate on the animal portion of this group: the protozoa (proto = first, zoa = animals).
Introduction Protozoans are animal-like protists that are able to move from place to place to obtain their food. Unlike animals, however, protozoans are unicellular. Click on an image below to explore the parts of a protozoan.