Two statements about the membranes of a eukaryotic cell are given below. Statement I: Mitochondria, chloroplasts and peroxisomes are not counted in the endomembrane system, because their functions are not coordinated with those of the endoplasmic reticulum, Golgi complex, lysosomes and vacuoles. Statement II: In plant cells, the tonoplast moves a number of ions into the vacuole against their concentration gradient, so their concentration is much higher in the vacuole than in the cytoplasm.