Ribosome Function and Location
A student observes a cell containing both free-floating and membrane-bound ribosomes. The student concludes that free ribosomes synthesize proteins for use within the cell, while membrane-bound ribosomes do not participate in protein synthesis. What is the primary error in the student’s conclusion?
A
Did not use a stain; ribosomes cannot be observed without specific staining.
B
Incorrect conclusion; membrane-bound ribosomes synthesize proteins for export or membrane insertion.
C
Misidentified the organelles; they observed mitochondria, not ribosomes.
D
Used the wrong cell type; only eukaryotic cells have membrane-bound ribosomes.
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