Plant Structure
In plant cells, which of the following is not a function of the large central vacuoles of plant cells?

Contractile regulation of
Storage of food
Waste storage water content
Support

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Plant Structure
The mitochondria were known in the nineteenth century to be osmotically active on the basis of evidence that

mitochondria are surrounded by a semi permeable membrane
the mitochondrial matrix is hypertonic to the cellular cytoplasm
the mitochondrial matrix is hypotonic to the cellular cytoplasm
mitochondria were derived from a symbiotic bacterium

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