Amino acids contain an amino (–NH2) and carboxyl (–COOH) functional groups. The amino acids in proteins are called alpha (α)-amino acids because the amino group is attached to the α-carbon. A carbon directly connected to carbonyl carbon is termed α-carbon. Depending upon the relative position of the amino group with respect to the carboxyl group, the amino acids can be […]
Unicellular organisms are capable of having an independent existence and of performing the essential functions (metabolic activities) of life. Anything less than a complete structure of a cell does not ensure independent living. Hence, the cell is the fundamental structural and functional unit of all living organisms. All the living organisms, from the smallest (unicellular) to the […]
Science > Mathematics > Trigonometry > Angle Measurement > Measurement of Angle in Radians In this article, we shall study to find a measure of an angle in radians and degrees. Express following angles in degrees, minutes, and seconds Degrees x 60 = Minutes Minutes x 60 = Seconds 74.87° 74.87° = 74° + 0.87° […]
Science > Chemistry > Everyday Chemistry > Cleansing Agents: Soaps and Detergents In the last article, we have studied the use of chemicals in food is in the form of food additives, food preservatives, artificial sweeteners, and antioxidants. In this article, we shall study about cleansing agents: Soap and detergent Soaps: Cleansing agents soaps and […]
Science > Chemistry > Everyday Chemistry > Use of Chemicals in Food In the last two articles, we have studied the use of chemicals as everyday medicines. In this article, we shall study the use of chemicals in food. The use of chemicals in food is in the form of food additives, food preservatives, artificial […]
Science > Chemistry > Everyday Chemistry > Everyday Medicines 02 In the last article, we have studied medicines in everyday life, like analgesics, antipyretics, antihistamines, tranquilizers, antifertility, and antimalarials. In this article, we shall study, antimicrobials, antibiotics, antiseptics, and disinfectants. The action of Microbes in the Body: The living organisms which cannot be seen with […]
Science > Chemistry > Everyday Chemistry > Everyday Medicines 01 In the last article, we have studied the mechanism of action of a drug. In this article, we shall study some everyday medicines like analgesics, antipyretics, antihistamines, antifertility, and tranquilizers. Antipyretics: Chemical substances that are used to bring down body temperature with high fevers are […]
Science > Chemistry > Molecule and Molecular Mass > Calculation of Mass of a Molecule and an Atom In this article, we shall study the calculation of the mass of molecule and an atom. Schematic Diagram for Mole Calculations: Where, m = Given mass, M = Molar mass v = Given volume, V = Molar […]
Science > Chemistry > Molecule and Molecular Mass > Calculation of Number of Moles, Atoms, and Molecules In this article, we shall study the calculation of number of moles, number of atoms, and molecules in a given moles. Schematic Diagram for Mole Calculations: Where, m = Given mass, M = Molar mass v = Given […]
Science > Chemistry > Molecule and Molecular Mass > Mole Concept In this article, we are going to study very important concept of chemistry known as the mole concept. Berzelius Hypothesis: According to Dalton’s atomic theory atoms of different elements combine with each other in a simple whole number ratio, whereas Gay Lussac’s law of […]