The Living World

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What is the Living World?

Living Organisms are formed by various forms of organic and inorganic biomolecules. Organic molecules involve macro biomolecules like amino acids and mono-sugars or macro-biomolecules (high relative molecular mass, large size, and slightly soluble). Inorganic compounds are minerals, water, etc and are always macromolecules (low mass, small size, diffusible, and readily soluble in water). Both forms of biomolecules play a large role in metabolism.


Assorted forms of living beings are found in various styles of living spaces like the sea, freshwater bodies, backwoods, cool mountains, deserts, warm water springs, and so on. This makes us think about what's life? To seek out the solution for this a differentiation on living and therefore the non-living beings are required.


Role of Different Substances

Role of Water: Water makes 70-90% of the cellular pool and 65% which is around two-thirds of the body, formed by Hydrogen and Oxygen atoms within the ratio 2:1. As sustenance of essential life processes is supported by water hence it is known as ‘the cradle of lip’. Life is next to impossible without water.


Role of Oxygen: Oxygen is used mainly in aerobic cell respiration of the nutrients within the mitochondria to form ATP molecules which are energy-rich and 5% of the available energy is released within the absence of oxygen.


Role of Common Salt (Sodium Chloride): Chemical compound performs an infinite role in metabolic functions of the body in ionic form.


Role of Carbohydrates: Carbohydrates are the organic compounds consisting of C, H, and O in a 1:2:1 ratio and commonly called saccharides. Carbohydrates are the foremost storage molecules and many organisms utilize carbohydrates as a big fuel in breaking these bonds and liberating energy.


Role of Proteins: Proteins are the polymeric compounds consisting of monomers (amino acids) by peptide bonds. Only 20 among 100 kinds of amino acids are of biological importance. Proteins perform a big role within the building structures and the living organisms. Almost like fat and carbohydrate, protein is going to be broken followed by the liberation of energy. Protein is usually used only as a substantial source of energy in starving situations.


Taxonomic Categories:

The term taxonomy was coined by A. P. Candolle and comprises seven major taxonomic categories. The hierarchy holds two categories namely intermediate and obligate. Obligate is followed strictly and ranges from kingdom to species, but Intermediate is solely its opposite.


Species: This the tiniest and basic unit of classification. It refers to a gaggle of a population that is comparable in form, shape, and reproductive features. Fertile siblings are made because of similar reproductive features.


Genus: This can be often an assembly of a bunch of comparable species that are involved in common ancestors and carries common characters with it called correlated characters. For example, leopards and cats are put within the Panthera.


Family: it is the set of comparable genera. The families are classified as supporting vegetative and reproductive features. For example, Tigers and ions are put within the Felidae family.


Order: it is the assembly of 1 or quite one common family, considered because of the next category. Felidae families are involved in the Carnivora order.


Class: A category points towards a subdivision in an exceeding phylum consisting of 1 or quite one order. The Mammalia class involves all the mammals which are a gorilla, monkey, man, and gibbon.


Phylum: It holds a group of comparable classes. Chordata includes Mammalia along with reptiles, fishes, amphibians, and birds.


Kingdom: Every animal which belongs to different phyla are assigned to the easiest taxon called a kingdom. All animals along with plants are included within the dominion Animalia and Plantae. A taxon could also be a unit that shows the group of organisms wishing on visible features.


Did You Know?

Metabolism Molecules react chemically to perform certain activities. All activities (growth, development, responsiveness, adaptation, and reproduction) are possible because of metabolism. Metabolism is primarily of two types: Anabolism and Catabolism. Anabolism is the constructive aspect of metabolism. During this, a reaction is built up with a synthesis of complex structures with simple ones, including the storage of energy.


As an example, the production of glucose from carbonic acid gas and water with the assistance of chlorophyll and light-weight energy. This process is understood as photosynthesis. Catabolism is the destructive aspect of metabolism. During these, complex substances break down to form simpler products, including the release of energy. For instance, the breakdown of glucose with the assistance of enzymes to make CO2 and water.

FAQ (Frequently Asked Questions)

1. What is Reproduction?

Ans: Reproduction is the assembly of recent living beings which are quite similar in most of the aspects. It increases the quantity of a selected population. it's mainly of two types sexual & asexual. In the asexual type, a single parent is involved and there's no production and union of gametes while in the sexual type two parents are involved and there's the union of gametes together with its production. In the asexual type, reproduction occurs by spores, fission, and multiple fission. Other methods are fragmentation and regeneration. In the sexual type, there's the formation of a zygote which provides rise to an offspring.

2. What is Life Span and Death?

Ans: Every living being has a definite generation and death phase. Death is essentially an increase in entropy (disorder) which results in the cessation of life activities in living beings. It's multi-factorial and will occur because of accident or injury. Death is nonexistent in certain species of organisms that reproduce by binary fission.