Multiple choice

Which if the following is found in both single-celled and multi-celled organisms?

  1. tissue

  2. organs

  3. organ systems

  4. cell structures

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Both single-celled and multi-celled organisms possess cell structures (such as membranes, ribosomes, and genetic material) to carry out life processes. Tissues, organs, and organ systems are only found in multicellular organisms.