3. Phosphorus represents only 1% of human body weight. However, it is a building block of very important macromolecules. Describe some of the cellular functions
that would not be possible without phosphorus.

It would be impossible to store and transfer genetic information

It would be impossible to carry out majority of cellular activities due to lack of usable energy.

Explanation:

Phosphorus, as stated in the question, represents a very low amount in our body system, however, its role in living systems cannot be underestimated. Phosphorus is a vital component of major biomolecules in our system.

- It is the building block of the NUCLEOTIDES that make up nucleic acids. Nucleic acids (DNA and RNA) store genetic information and help transfer it to offsprings. However, without one of the elemental components (phosphorus) that make up its structure, it will not be produced. Hence, the storage and transfer of genetic information will be impossible.

- Phosphorus also makes up the structure of the ADENOSINE TRIPHOSPHATE (ATP) molecule. ATP provides the cell with all the energy used in carrying out cellular functions. However, the absence of phosphorus needed for the synthesis of ATP, ATP will not be produced and ultimately no energy.

Nucleic Acids = DNA

Lipids = Fats

Place that into some wording.

Late but for other people this year.

On the chart it provides, it says Nucleic Acids & Lipids are the Macromolecules that have a "P" (phosphorus) in their Primary Elements.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

the tricuspid valve is present between right atrium and right ventricle