Bachelor of Health Science Practice Exam 2026 – Complete Prep Guide

The ribosome is considered the least complex of the options provided because it is primarily composed of ribosomal RNA (rRNA) and proteins, forming a relatively simple structure that plays a crucial role in protein synthesis. Unlike other cellular structures, ribosomes do not have membrane-bound compartments or extensive internal organization.

In contrast, mitochondria are double-membraned organelles with complex functions including energy production (ATP synthesis), participating in various metabolic pathways, and possessing their own genetic material. Neurons are specialized cells that have intricate structures and functions, including dendrites, axons, and synaptic connections, which allow them to transmit and process signals throughout the nervous system. The cell membrane, while essential for maintaining cellular integrity and mediating communication with the environment, consists of a bilayer of phospholipids with embedded proteins, contributing to a more complex structure than that of a ribosome.

Thus, the ribosome, with its simpler composition and function, is indeed the least complex among the options.