About 98 percent of the mass of every living organism is composed of just six element including carbon, hydrogen, nitrogen, oxygen and

[2007]

a)
sulphur and magnesium

b)
magnesium and sodium

c)
phosphorus and calcium

d)
sulphur and phosphorus

Correct answer is option 'C'. Can you explain this answer?

Question

About 98 percent of the mass of every living organism is composed of just six element including carbon, hydrogen, nitrogen, oxygen and

[2007]

a)
sulphur and magnesium
b)
magnesium and sodium
c)
phosphorus and calcium
d)
sulphur and phosphorus

Correct answer is option 'C'. Can you explain this answer?

Answer

Living organisms requires 6 elements in relatively large amounts. C, H, O, N, P, S. These elements contribute to the structural organization of living organisms. Phosphorus is important constituent of nucleic acids, sulphur and nitrogen constituent of amino acids. Carbon, hydrogen, oxygen are frame work element. Nitrogen forms DNA base pairs. Smaller quantities of the elements required are Na, K, Mn, Ca, Fe, Mg, Cl, Mg, Cl, 1, Co, Bo. Plants obtained their supplies of material from air, water, and soil. Animals obtained these by eating plants and drinking water. All are present in rocks and are released by erosion and weathering into soils, rivers, lakes and oceans. Some such as N, O, and C are also present in the atmosphere. The movement of the nutrient element through the biosphere is called the biogeochemical cycle. e.g. Carbon, nitrogen, sulphur, phosphorus, oxygen and water cycles.
so CORRECT ANSWER IS OPTION D 'SULPHUR AND PHOSPHORUS'.

Answer

No correct ans is d phosphorus and sulphul CHONPS  go and search on Google

Answer

O - 65%C-  18.5%N -  3.3%Ca- 1.5%H -  0.2 %  by weight in living organism. Hence option c right

Answer

Calcium and phosphorus

Answer

Composition of Living Organisms

The composition of living organisms can be broken down into different elements. These elements make up the various molecules and compounds that are essential for life. Among these elements, carbon, hydrogen, nitrogen, and oxygen are the most abundant, collectively making up about 98 percent of an organism's mass.

The Role of Carbon

Carbon is the backbone of organic molecules, forming strong bonds with other carbon atoms to create long chains or rings. It is the key element in carbohydrates, lipids, proteins, and nucleic acids - the four major macromolecules that are vital for life.

The Importance of Hydrogen, Nitrogen, and Oxygen

Hydrogen is found in many organic compounds and is particularly important in forming bonds with carbon. It is a crucial component of water, the most abundant molecule in living organisms. Hydrogen is also present in various biomolecules such as carbohydrates and lipids.

Nitrogen is an essential component of proteins and nucleic acids. It is necessary for the structure and function of enzymes, which are responsible for catalyzing biochemical reactions. Nitrogen is also involved in the formation of DNA and RNA, the genetic material of organisms.

Oxygen is a highly reactive element that is essential for cellular respiration. It plays a critical role in the production of ATP, the primary energy currency of cells. Oxygen is also a component of water and many organic molecules.

Additional Elements in Living Organisms

In addition to carbon, hydrogen, nitrogen, and oxygen, other elements are also present in living organisms, although in smaller quantities.

Phosphorus is vital for the structure and function of nucleic acids, such as DNA and RNA. It is also a major component of ATP, playing a crucial role in energy transfer within cells.

Calcium is important for various physiological processes, including muscle contraction, nerve function, and bone formation. It is a key component of bones and teeth.

Conclusion

In summary, carbon, hydrogen, nitrogen, and oxygen make up about 98 percent of the mass of living organisms. These elements are essential for the formation of organic molecules and the functioning of biological processes. Phosphorus and calcium are also present in smaller quantities and play important roles in nucleic acids, energy transfer, and physiological processes.

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