Archive | Organism

Prokaryotic – Eukaryotic Interactions | Microbiology

This article provides a brief overview of key points in cellular biology underlying prokaryotic-eukaryotic interactions. 1. Bacterial Ultra-Structure: Bacteria are the smallest organisms living independently. Their size, shape and dimension vary. 2. Pathogenicity Islands: Bacterial patho­genicity is governed by inter-species transfer of virulence factors contributed by plasmid and transposons. Pathogenicity is becoming apparent also. The interspersed elements (within the ge­nomes [...]

By |2016-11-28T11:03:48+00:00November 28, 2016|Organism|Comments Off on Prokaryotic – Eukaryotic Interactions | Microbiology
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Organism’s Response to Stressful Conditions

Living organisms cope with stressful conditions by any of the following methods: Method # 1. Regulate: Homeostasis is maintained by ensuring constant body temperature and constant osmotic concentration. a. All birds, mammals, a few lower vertebrates and invertebrates have the mechanism of thermoregulation and osmoregulation for maintaining the homeostasis. b. During summer, sweating occurs profusely and the evaporation brings down [...]

By |2016-10-20T07:52:41+00:00October 20, 2016|Organism|Comments Off on Organism’s Response to Stressful Conditions
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Factors that Influence Life of an Organism | Biology

The following points highlight the four main factors that influence the life of an organism. The factors are: 1. Temperature 2. Water 3. Light 4. Soil. Factor # 1. Temperature: It is the most ecologically significant environ men­tal factor. It varies seasonally. Thus, decreases progressively from the equator towards the poles and from plains to the mountain tops. It ranges [...]

By |2016-10-20T07:52:41+00:00October 20, 2016|Organism|Comments Off on Factors that Influence Life of an Organism | Biology
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