Biology (Greek, Bios – Life, logy –study) is the study of life and life processes. Biology is defined as the science of living organisms which includes their growth, structure, function, various metabolic activities of their body, their habitat, mode of nutrition, mode of reproduction and their evolutionary pattern. Plants, animals and microorganisms inhabit in diverse areas such as mountains, snow-clad mountains, deserts, grasslands, and forests, hot springs, marine and fresh water. Each plant and animal has its own adapted way to function in order to survive. Tutorspoint offers Biology Homework help & Dissertation writing help by biology experts for USA, UK, Australia, UAE

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Ernst Mayr, an evolutionary biologist, who has been called as the ‘The Darwin of 100th Century’, single-handedly made the Origin of Species diversity as the central question of evolution. All matter in this universe is divided into two components – Biotic and abiotic. Biotic comprises of living organisms while abiotic comprises of non-living organisms like water, fire, air, soil etc. Biotic components live in a mutual harmony with the abiotic components in order to survive. The entire range of living organisms is classified in to five different kingdoms – Kingdom Monera, Protista, Fungi, Plantae and Animalia. Kingdom is the highest level in the hierarchy of classification. This hierarchy of classification is defined as taxonomy and is maintained to identify the organism in such a way that it is universally accepted.

 

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All living organisms require energy for their various body activities like growth, locomotion, life processes like digestion, reproduction, excretion etc. This energy is obtained from food. Organisms like plants and algae synthesize their own food with the help of sunlight, water and a green pigment called chlorophyll. Hence these organisms are known as autotrophs and the process of preparing food is called as photosynthesis. The other organisms are either directly or indirectly dependent on plants and hence are known as heterotrophs. Some organisms live as obligate parasites on other organisms, while some live in a symbiotic relationship with other organisms.

 

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While, the above description of biology provides an understanding of the working of living organisms, it is also bound to accept that all living organisms tend to fall ill due to diseases caused by micro-organisms, failure of cells to function properly and organ failure. This results in various incurable and curable diseases and disorders. Some of the diseases caused by microbes are malaria, typhoid, dengue, while different types of cancer namely, breast cancer, leukemia, pancreatic cancer are caused due to continuous and un-arrested growth of cells.

 

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Thus, it is important to maintain one’s health as diseases like malaria and cancer are widespread in today’s lifestyle. Biology has advanced much more from this basic knowledge in 1900s until today. Today’s modern and advanced technology aims at discovering medicines so as to cure system diseases like Diabetes, cancer, cardiovascular diseases and so on. Invent of biotechnology and nano-biotechnology has revolutionized the field of medicines thus promising a better future in controlling diseases and maintaining a perfect health.