Within the cell's endoplasmic reticulum, the proteins are packed into membranebound sacks called

i'd say that the moon rock is about 2.2 billion years old.

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.