Four of the five answers listed below are protist structures. Select the exception.

A) cell membrane
B) pili
C) mitochondrion
D) eyespot
E) pellicle

Pili

Hair-like structures on the surface of many bacteria that are involved in attachment to surfaces and in the transfer of genetic material.

Protist Structures

The varied and complex cellular organizations found in protists, ranging from single-celled to multicellular forms.

Eyespot

A pigmented organelle found in some algae and protozoa, allowing the organism to sense light direction.