I belive this is repair and maintenance.
hope this helps!
Answer:
Algea
Explanation:
Algae produce about 330 billion tons of oxygen each year.
Answer:
it stores and controls water in the cell
Explanation:
Hydrocarbons. (organic compounds entirely made up of hydrogen and oxygen)
Answer:
1. transcription of Tau DNA in different directions.
4. different chemical modifications of Tau protein.
Explanation:
Tau gene transcribe in different direction which depends upon the animal age. This happens because at different age and developmental stage, animal produce different RNA binding proteins which leads to formation of alternative splice forms. This reaction is strengthen by the addition of phosphate and sugar molecules which again depending on developmental stage and time.