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Humanities/Arts Exam  >  Humanities/Arts Questions  >  In most organisms, the living material contai... Start Learning for Free
In most organisms, the living material contains 80% of which of the following substance?
  • a)
    Protein
  • b)
    Carbohydrates
  • c)
    Fats
  • d)
    Vitamins
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
In most organisms, the living material contains 80% of which of the fo...
In most organisms, the living material contains 80% of proteins. Proteins are large, complex molecules made up of smaller units called amino acids. They play a crucial role in the structure and function of cells and are involved in various biological processes.

The high percentage of proteins in living material is due to their importance in maintaining the structure and function of cells and tissues. Proteins are the building blocks of cells and are responsible for many essential functions, including:

1. Structural Support: Proteins provide structural support to cells and tissues. They form the framework of the cell, giving it shape and stability. For example, collagen is a protein found in connective tissues that provides strength and support to the skin, tendons, and bones.

2. Enzymes: Proteins act as enzymes, which are biological catalysts that speed up chemical reactions in the body. Enzymes are involved in various metabolic processes, such as digestion, energy production, and DNA replication.

3. Transport: Proteins are involved in the transport of molecules across cell membranes. For example, carrier proteins facilitate the movement of ions and molecules across the cell membrane, ensuring the proper functioning of cells.

4. Defense: Antibodies are proteins that play a vital role in the immune system. They recognize and neutralize foreign substances, such as bacteria and viruses, preventing infections and diseases.

5. Cell Signaling: Proteins are involved in cell signaling pathways, which regulate various cellular processes. Signaling proteins transmit signals from the cell surface to the nucleus, triggering specific responses within the cell.

6. Movement: Proteins are responsible for muscle contraction and movement. Actin and myosin are two proteins involved in muscle contraction, allowing organisms to move and perform physical activities.

Overall, proteins are essential for the structure, function, and regulation of organisms. They are involved in a wide range of biological processes and are crucial for the survival and proper functioning of cells and organisms.
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In most organisms, the living material contains 80% of which of the fo...
Protein
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Directions: Read the following passage very carefully and answer the questions on the basis of it:Iron and steel Industry The Iron and steel industry forms the base of all other industries and, therefore, it is called a basic industry. It is basic because it provides raw material for other industries such as machine tools used for further production. It may also be called a heavy industry because it uses large quantities of bulky raw materials and its products are also heavy.Iron is extracted from iron ore by smelting in a blast furnace with carbon (cok e) and limestone. The molten iron is cooled and moulded to form pig iron which is used for converting into steel by adding strengthening materials like manganese. The large integrated steel industry is traditionally located close to the sources of raw materials - iron ore, coal, manganese and limestone - or at places where these could be easily brought, e.g. near ports. But in mini steel mills access to market is more important than inputs. These are less expensive to build and operate and can be located near markets because of the abundance of scrap metal, which is the main input. Traditionally, most of the steel was produced at large integrated plants, but mini mills are limited to just one-step process – steel making-and are gaining ground.Distribution: The industry is one of the most complex and capital-intensive industries and is concentrated in the advanced countries of North America, Europe and Asia. In U.S.A, most of the production comes from the north Appalachian region (Pittsburgh), Great Lake region (Chicago-Gary, Erie, Cleveland, Lorain, Buffalo and Duluth) and the Atlantic Coast (Sparrows point and Morisville). The industry has also moved towards thesouthern state of Alabama. Pittsburg area is now losing ground. It has now become the “rust bowl” of U.S.A. In Europe, U.K., Germany, France, Belgium, Luxembourg, the Netherlands and Russia are the leading producer’s.The important steel centres are Scun Thorpe, Port Talbot, Birmingham and Sheffield in the U.K; Duisburg, Dortmund, Dusseldorf and Essen in Germany; Le Creusot arid st. Ettienne in France; and Moscow, St.Petersburgh, Lipetsk, Tula, in Russia and Krivoi Rog and Donetsk in Ukraine. In Asia, the important centres include Nagasaki and Tokyo-Yokohama in Japan; Shanghai, Tienstin and Wuhan in China; and Jamshedpur, Kulti-Bumpur, Durgapur, Rourkela, Bhilai, Bokaro, Salem, Visakhapatnam and Bhadravati in India.Q. Identify the incorrect statement about iron and steel industry,

Direction: Read the case study given below and answer any three of the questions that follow.The sun is the basic source of energy on which all life depends. This energy initiates life processes in the biosphere through photosynthesis, the main source of food and energy for green plants. During photosynthesis, carbon dioxide is converted into organic compounds and oxygen. Out of the total solar insolation that reaches the earth’s surface, only a very small fraction (0.1 per cent) is fixed in photosynthesis. More than half is used for plant respiration and the remaining part is temporarily stored or is shifted to other portions of the plant.Life on earth consists of a great variety of living organisms. These living organisms exist and survive in a diversity of associations. Such survival involves the presence of systemic flows such as flows of energy, water and nutrients. These flows show variations in different parts of the world, in different seasons of the year and under varying local circumstances. Studies have shown that for the last one billion years, the atmosphere and hydrosphere have been composed of approximately the same balance of chemical components. This balance of the chemical elements is maintained by a cyclic passage through the tissues of plants and animals. The cycle starts by absorbing the chemical elements by the organism and is returned to the air, water and soil through decomposition. These cycles are largely energised by solar insolation. These cyclic movements of chemical elements of the biosphere between the organism and the environment are referred to as bio geochemical cycles. Bio refers to living organisms and geo to rocks, soil, air and water of the earth.Q. Life on _______ consists of a great variety of living organisms.

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In most organisms, the living material contains 80% of which of the following substance?a)Proteinb)Carbohydratesc)Fatsd)VitaminsCorrect answer is option 'A'. Can you explain this answer?
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