Colloidal System – Properties & Significance
sanaA heterogeneous mixture in which solute particles are larger than molecules or ions but cannot be seen by naked eye is called colloidal solution. A system which shows properties of…
Plant Systematics – introduction , definition , importance and simpson
sidraThe study of kinds and diversity of organisms and the evolutionary relationships among them is called systematics or taxonomy. The study systematics gives the order and relationships among thp organism.…
BUFFERS
The substance which resists change in pH is called buffer. Stable internal environment is maintained in animals. It requires a relatively constant pH of the body fluids. A strong acid…
pH: MEASURING ACIDITY AND ALKALINITY
The negative log (antilog) of hydrogen ion concentration is called pH. Hydrogen and hydroxyl ions affect the chemical reactions in the cells. Therefore, the concentrations of these ions in body…
ACIDS, BASES & SALTS
Acid An acid is a substance that releases hydrogen ions (in when dissolved in water. A hydrogen atom without its electron is only a proton. Thus an acid is a…
Applications of Genetics
rubabGenetics has scope in following fields: Genetics as basis of biological sciences Genetics provides a foundation for biological studies. Law of inheritance helps its to understand principles of embryology, population,…
SI units of expressing concentration of solutions
The concentration of a solution is expressed by following methods: Percentage The volume or weight (concentration) of some solute is expressed in the percentage. For example 10 gin of sodium…
ELECTROLYTES AND NON-ELECTROLYTES
Electrolytes The substances that conduct electric current in aqueous solution are called electrolytes. Electric current decompose an electrolyte into its ions. The process of decomposition of electrolytes into its ions…
Mendelian Inheritance
The study of transfer of hereditary characters (genes) from parent to offspring is called genetics (from the Greek genno= cis birth). It is the science of genes. heredity and the…
Solutions, Acid Base And Colloidals
kiranA homogeneous mixture of two or more substances is called solution. The dissolved substance is called solutes. 1 substance which dissolves a solute is called solvent. The solutions in which…