recent human biology articles

Summary - 1) The human body has elaborate mechanisms for protection against foreign bodies, germs and cancer cells. 2) Immunity is either innate or acquired. 3) Innate or non-specific immunity refers to a wide variety of body responses against a wide range of pathogens. 4) Previous exposu..

Angiosperms represent the most recent and the most advanced group of plants. Angiosperms have been of immense importance to humans, more than any other grou..

Many diseases and pests of plants / animals follow a particular rhythm because of specific response of causal organism to a set of environmental conditions. Hence, disease / pest is more likely to attack a plant/animal if the environmental situations are favourable. These are called 'pre-disposing..

>Edaphic resources include alluvial, black soil, red soil, laterite soil, desert soil and problematic soil Forest resources are useful to man in many ways Crop resources include all types of crops - whose cultivation has provided, food, fodder, clothing, industrial products to human being..

Biotechnology - Biotechnology is science of manufacturing useful substances, chemicals, medicines by use of living organisms and their life process. In fact, biotechnology is not a new science. Alcohol was the first product manufactured by ancient biotechnologist. In recent years, biotech..

What aberration is caused in recent 50 - 80 years is, man has added large quantity of green house gases like CO 2 , Methane. This has resulted in changing the global climate. Human activities such as burning of fossil fuels has created imbalance in otherwise balanced cycles of ..

Summary - Angiosperms represent the most recent and the most advanced group of plants. Angiosperms have been of immense importance to humans, more than any other group. There have been several attempts to classify angiosperms. One of the earliest attempts was that of Carolus Lin..

Man Made Green House Effect - Normal green house effect was principally dominated by H 2 O (vapour), CO 2 and O 3 the interception of infrared radiation by these gases was in the wavelength ranges as given below: Water vapour - 6 - 25 m m CO 2 - 13 - 17 m m O 3 - 9 - 10 m m Human activiti..

. Vehicle (vector) DNA is the DNA which carries the passenger DNA to the new host. It is usually the plasmid from bacterial or a bacteriophage. Various enzymes such as lyases, ligases, alkaline phosphates, reverse transcriptases and nucleases are used in the technology. The most widely used nucleas..

1) The human body has elaborate mechanisms for protection against foreign bodies, germs and cancer cells. 2) Immunity is either innate or acquired. 3) Innate or non-specific immunity refers to a wide variety of body responses against a wide range of pathogens. 4) Previous exposure to an a..