Question

Question one: List the top four elements that make up orgaisms and explain why they are so prevalent.

Question Two: After water, list the order of the types of macromolecules that make up an animal. Explain why proteins outnumber carbohydrates.

Answer 1

1. The top four elements making upthe organisms are Carbon, Oxygen, Hydrogen, Nitrogen and phosphorous. These elements are so important because they make up the cells and involved in the construction of macromolecules like carbohydrates, proteins, lipids and nucleic acids. These elements play a vital role in the metabolic activitie thus helping the organism to survive. These elements are so prevalent because they are found in the build up of each and every cell and organism.

2. After water the other macromolecules involved in the make up the animals are carbohydrates, proteins, lipids and nucleic acids (DNA, RNA).

The carbohydrates are rich energy sources that readily split and provide energy for the metabolic activities of an organism. Hence, carbohydrates are rich and abundant than any other macromolecules.

Proteins are building blocks contributing to the body mass. The enzymes involved in several biochemial and metabolic pathways are proteins.

Lipids provide the structural integrity and support. Lipids insulate the bodies and are also energy stores.

Nucleic acids are source of genetic information that can be passed form a generation to the other.

Because of the occurence of proteins in structure and metabolic activitites in the form enzymes, the proteins outnumber the carbohydrtaes.

Answer 2

All the organisms living on the earth are made up of six elements namely, carbon, hydrogen, nitrogen, oxygen, phosphorus and sulphur. The top four are carbon, hydrogen, nitrogen, oxygen.

Answer 3