Plant Structure
Chemical energy is supplied to eukaryotic cells by

mitochondria and chloroplasts
chloroplasts and golgi complexes
mitochondria only
mitochondria and ribosomes

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Plant Structure
Which of the following statements about the outer mitochondrial membrane is not true?

The outer membrane is highly permeable to substances of small molecular weight
The outer membrane is impermeable to hydrogen ions
The outer membrane is about 50% lipid and 50% protein by weight
The outer membrane contains porins

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