African sleeping sickness is spread by flea bites.

Molecular data confirm that cnidarians branched off from the rest of animals before ________ evolved.

All ________ have two very different types of nuclei within their cells, small micronuclei and larger macronuclei.

Protist locomotion is accomplished by the contraction of muscle fibers.

A common characteristic of Choanoflagellida is

Cnidarians characteristically possess specialized cells which contain a  nematocyst, a harpoon used to attach prey.

The theory of endosymbiosis proposes that ancestral eukaryotic cells engulfed aerobic bacteria, which then evolved into mitochondria.

When an animal body is dissected so that the dorsal region and ventral region are separated it is called:

The ___________________________ gives rise to muscles, bones, and the circulatory system.

Segmentation can enhance movement and locomotion.