The basic structure of cell consist of nucleus, plasma membrane and cytoplasm. Other than this different structures like Endoplasmic Reticulum(ER), Golgi body, Lysosomes, Mitochondria, Plastids and Vacuoles are also present. All of these are cell organelles. Presence of different cell organelles differ from organism to organism i.e. unicellular or multicellular organism. Cell organelle can be […]
Author Archives: LearnFatafat
Structure and Functions of Plasma Membrane in a Cell
“A plasma membrane or cell membrane is the outermost covering of cell.” Structure and functions of Plasma Membrane Plasma membrane is composed of organic molecules like lipids and proteins. It acts as a semipermeable membrane that allows the exchange of materials between cell and its surrounding. A semipermeable membrane allows the passage of specific material, […]
Working of an Electric Motor
Electric Motor is a rotating device that convert electrical energy into mechanical energy in the form of rotations. In our daily life we use electric motors in various appliances such as electric water pump, electric fans, mixers, clocks. Principle of Electric Motor Current carrying conductor if placed in magnetic field experiences a magnetic force which […]
The Process of Photosynthesis
“Photosynthesis is a physicochemical process in which green plant synthesise their food from atmospheric carbon dioxide and water in presence of sunlight and chlorophyll.“ Entire living population including human beings need food for energy and growth. Food is obtained from green plants. Green plants prepare their food with the help of Photosynthesis. It is a […]
Working of Human Digestive System
For the nutrition human beings have separate dedicated digestive system. Human digestive system is a complex system consisting of Alimentary Canal and Digestive Glands. Alimentary canal is long, tube like structure extending from mouth to Anus. Digestive glands include Salivary glands, liver, the Pancreas and Gastric glands. Mouth In mouth complex food material is broken […]
CBSE 10 Time-Table Final Examination 2018
Date Subject Code Subject Name 5.3.2018 166 Info. & Comm. Tech 401 Dynamic of Retail 402 Info Technology 403 Security 404 Automobile Tech 405 Intr to FMG 406 Intr to Tourism 407 Beauty & Welln 408 Introductory Agric 409 Food Production 410 Front Office Opera 411 Banking & Insura 6.3.2018 002 Hindi Course-A 085 Hindi […]
Some Concepts in Physics
Universality of Basic Theories In Physics few basic concepts and laws can explain many different phenomena. For instance, after firing a bullet soldier get sudden jerk, by applying the force on water, swimmer moves forward, rocket push the propellent backward, in response the rocket get pushed forward. All these can be explained with the help […]
Fundamental Forces in Nature
Force is needed to carry, push or throw object. Or force is needed to change the shape or break the object. On macroscopic level, there are number of forces such as Muscular Force, Friction, Viscous Force of Liquids, and many other. Similarly on microscopic level, there are forces such as Electric Force, Magnetic Force, Nuclear […]
Rutherford’s Model of Atom
Thomson’s model revealed that atom has spherical structure, with positive charge spread all over the sphere and electrons are embedded in it. Also there is equal number of positive and negative charge i.e. atom is electrically neutral. Ernest Rutherford carried out experiments by taking consideration in Thomson’s model and presented more accurate model i.e. Rutherford’s […]
Bohr’s Model of Atom
Rutherford’s model explained that atoms revolve around nucleus in circular path. While revolving, electrons possess kinetic energy . Due to motion, energy from electron is continuously radiated. This suggest that electron must be losing energy continuously while revolving around nucleus. This may lead to fall of electron into the nucleus which will make atom highly […]
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