interview activity OF source making show six CRI proces function solution student reticulum mitochondria variou permeable transport apparatu concept phagocytosi selectively misconception LIST FIGURE chloroplast persentage used figure executive fiber model different organelle variety test step event scale golgi question point animal membrane pinositosi active plant cytoskeleton transfer page osmosi diffusion shape viii specialization mechanism general cell water prokaryotic penetrate each endoplasmic sub structure