1. Balances fluids.
2. Structure. Support for tissues.
This membrane is called a selectively permeable membrane as it only allows for the entry of specific substances and does not allow of others.
A virus normally lies dormant, it becomes only a living organism when it invades a living system.
Answer:
(C) DNA
Explanation:
This experiment shows that when bacteriophage infects bacteria, it only inserts its DNA (radioactive phosphorus is incorporated only in nucleic acid, while radioactive sulfur is incorporated only in proteins). Proteins with incorporated sulfur are located within the capsid of bacteriophage, which stays outside the bacterial cell.
Answer:
protects coastlines from storms and erosion
they are a source of food and new medicines
Explanation:
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