A)algae
B)fungi
C)slime molds
D)protozoans
E)bacteria

A)receptors designed to detect directly changes in the external environment.
B)diffusion of environmental cues through the outer layers of the body.
C)receptors for signals sent from exterior cells that relay information about environmental changes.
D)pH, temperature, or osmolarity receptors in the membranes of interior cells.

A)The body is made of a large cell with many nuclei.
B)The body cells are organized into well-defined tissue layers.
C)The body cells are organized into branching filaments.
D)The body is made up of several different types of highly specialized cells.
E)The body is a hollow ball of flagellated cells.