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कैंपबेल जीव-विज्ञान : सभी प्रतियोगी परीक्षा हेतु पीडीऍफ़ बुक | Campbell Biology : For All Competitive Exam PDF Book

कैंपबेल जीव-विज्ञान : सभी प्रतियोगी परीक्षा हेतु पीडीऍफ़ बुक | Campbell Biology : For All Competitive Exam PDF Book


Name of Book :  Campbell Biology / कैंपबेल जीव-विज्ञान 

Hope This Campbell Biology Book will Step up you to Succeed / आशा करते हैं कैंपबेल जीव-विज्ञान पुस्तक आपके कदम सफलता की ओर ले जायगी

Language of Book : English

Size of Ebook : 28.5 MB

Total pages in ebook : 123

Ebook Downloading Status  : Best 
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Description about eBook : Cells are the structural and functional units of life
The cell has a special place in the hierarchy of biological organization. It is the level at which the properties of life emerge—the lowest level of structure that can perform all activities required for life. A cell can regulate its internal environment, take in and use energy, respond to its environment, and develop and maintain its complex organization. The ability of cells to give rise to new cells is the basis for all reproduction and for the growth and repair of multi-cellular organisms. All organisms are composed of cells. They occur singly as a great variety of unicellular (single-celled) organisms, such as amoebas and most bacteria. And cells are the sub-units that make up multi-cellular organisms, such as lemurs and trees. Your body consists of trillions of cells of many different kinds. All cells share many characteristics. For example, every cell is enclosed by a membrane that regulates the passage of materials between the cell and its surroundings. And every cell uses DNA as its genetic information. There are two basic types of cells. Prokaryotic cells-were the first to evolve and were Earth’s sole inhabitants for about the first 1.5 billion years of life on Earth. Fossil evidence indicates that eukaryotic cells evolved about 2.1 billion years ago.............

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