Question

which organizational level is made up out of organ systems?
□ atom
□ organism
□ tissue
□ organ
□ molecule
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Explanation:

To determine the organizational level made of organ systems, we analyze each option:

• Atom: The smallest unit of matter, not related to organ systems.
• Organism: An organism is composed of multiple organ systems working together. For example, a human (an organism) has the respiratory, circulatory, and other organ systems.
• Tissue: A group of similar cells, which is a lower level of organization than organ systems (tissues form organs, organs form organ systems).
• Organ: A structure made of different tissues, and multiple organs form an organ system (so organs are a lower level than organ systems).
• Molecule: A group of atoms, not related to biological organizational levels involving organ systems.

So the organizational level made up of organ systems is the organism.

Answer:

B. organism (assuming the option for organism is labeled as such; in the given options, the correct one is the "organism" option)