Western blotting: Principle, Steps involved and Applications
Western blotting technique is used for the separation and identification of a specific protein in a complex mixture of proteins based on their molecular weight. […]
Optochin Test: Principle, Requirements, Procedure, Result Interpretation and Limitations
Principle: Optochin test is used to determine the effect of Optochin (ethylhydrocupreine hydrochloride) on an organism. Optochin is a chemical used as an antibiotic that […]
Classification of Streptococcus
The genus Streptococcus includes a large number of species of Gram-positive, catalase negative cocci. They are non-motile and non-spore forming. They are arranged in chains […]
Bacitracin Test or Bacitracin Susceptibility Test (Principle, Procedure, Requirements, Result Interpretation and Limitations)
Bacitracin test is one of the antimicrobial disc tests used to determine the susceptibility of bacteria to bacitracin. It is used for distinguishing group A […]
Bacterial endospore: Structure, Stages of Sporulation and Germination
Spore is a resting or dormant cell which is metabolically inactive and is produced during unfavorable conditions like nutrition deficiency, extreme temperature and pH, presence […]
Structure and Types of Animal egg cell or ovum
Egg cell or ovum, also known as female gamete is formed by the process of oogenesis in female organisms. They are produced by follicle cells […]
Sequential events and stages in the development of frog (pre-embryonic, embryonic and post-embryonic development)
Introduction: In sexual reproduction, development of organisms begins with a fertilized egg or zygote. Zygote divides and re-divides to form an embryo. Embryo is the […]
Formation and development of male and female gametophytes in angiosperms
A gametophyte is the haploid phase in the life cycle of a plant that produces gametes. The process of formation of gametes or germ cells […]
Differences between Self-pollination and Cross-pollination
S.N. Self-pollination Cross-pollination 1. Transfer of pollen grains from anther to the stigma of the same flower (typical self-pollination) or another flower of the same […]
The process of fertilization and development of embryo in angiosperms
The fusion of male gamete and female gamete in sexual reproduction is called fertilization. In angiosperms, the female gamete lies deep in the ovarian cavity, […]