Final answer:
The mismatched structure-function pair is microtubule and muscle contraction as microtubules are not primarily involved in muscle contraction but rather in cell shape, mobility, and chromosomal segregation during cell division. The other pairs are correctly matched.
Step-by-step explanation:
The structure-function pair that is mismatched is microtubule; muscle contraction. Let's discuss why. Microtubules, complex structures found within cells, have many roles, including maintaining cell shape, enabling cell mobility via flagella or cilia, and segregating chromosomes during cell division. However, they are not responsible for muscle contraction; this is performed by the actin and myosin proteins.
Each of the other structure-function pairs are correct. The nucleolus is indeed responsible for the production of ribosomal subunits, as these subunits are critical for protein synthesis in the ribosome. Lysosomes perform intracellular digestion, breaking down waste materials and cellular debris within cells. Ribosomes are the site of protein synthesis, as they translate the code from mRNA into a specific order of amino acids to make up a protein. The Golgi apparatus functions in protein trafficking, modifying, sorting, and packaging proteins for transport or secretion.
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