Silicon dioxide forms the cell walls of

The diatoms have a cell wall which is made up of silicon dioxide.

Diatoms are algal species which exist on houses made of glass. They are the main living being on the planet with cell wall composed of opaline silica, a component of silicon dioxide. Diatoms have chlorophyll a and c that gather vitality from the sun and transform it into compound vitality through photosynthesis.  

Through carbon obsession, diatoms expel carbon dioxide from the environment. The is changed over to natural carbon as sugar, and oxygen is discharged. We inhale the oxygen that diatoms discharge.  

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.