Question

question 5 of 20 :
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1. arrange the following terms in order from smallest/least complex to largest/most complex.

a. molecule, cell, tissue, organ, organ system, organism
b. tissue, molecule, cell, organism, organ, organ system
c. tissue, molecule, cell, organ, organ system, organism
d. molecule, cell, tissue, organism, organ, organ system

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Explanation:

To solve this, we recall the biological hierarchy of organization. The smallest unit here is a molecule (since molecules make up cells). Then cells form tissues, tissues form organs, organs form organ systems, and organ systems form an organism. Let's analyze each option:

• Option A: Molecule (smallest), then cell, tissue, organ, organ system, organism (largest). This follows the correct hierarchy.
• Option B: Tissue is made of cells, so tissue can't be smaller than molecule or cell. Incorrect.
• Option C: Tissue is larger than molecule and cell, so starting with tissue is wrong. Incorrect.
• Option D: Organism is larger than organ and organ system, so placing organism before them is wrong. Incorrect.

Answer:

A. Molecule, cell, tissue, organ, organ system, organism