GK Home ::
Directory Resources Jobs Fun Center Community Lycee Shopping Center Opportunities
Search for

  Human Body
  Alzeimers Disease
  Biological Clocks
  Blood Clot
  Blood Groups
  Blood Vessels
  Classes of Food
  Colour Blindness
  Digestive System
  Down's Syndrome
  Eating Disorders
  Genetic Counselling
  Human Genome
  Human Immune System
  Human Skeleton
  Muscular System
  Night Blindness
  Protein Synthesis
  Sickle Cell Anemia
  Varicose Veins
  Vitamin Deficiency Diseases
  Life Science
  Cardiac Cycle
  Carnivorous Plants
  Fleshy fruits
  Human Heart
  Parts of a flower
  Repetitive stress injury
  Root system
  Do Parallel Lines Meet
  Prime Numbers
  Radius of Earth
  Natural Phenomenon
  AM and PM
  Big Bang
  Dead Sea
  Local and Standard Time
  Nitrogen Fixation
  Ozone Layer
  Soil and Chemical Pollution
  Why Does Water Put Out Fire
  Why is The Sky Blue
  A C. Generator
  Acceleration Due To Gravity
  Accuracy And Precision
  Angle of Dip and Declination
  Atmospheric Pressure
  Bohrs model
  Brownian Motion
  Carbon Dating
  Centripetal Force
  Color Code for resistance
  Complimentary colors
  Coulomb' Law
  D C.Motor
  Dispersion of Light
  Echo of sound
  Electrical Resistance
  Electromagnetic Spectrum
  Energy Sources
  Escape Velocity
  Expantion of water
  Geiger Counter
  Half -wave Rectifier
  Heat n temperature
  How Atoms Combine To Form Matter
  Latent Heat
  Lightning Conductor
  Mass Defect and Binding Energy
  Nuclear Fission
  Nuclear Fusion
  Photocopier (Xerox machine)
  Photoelectric cell
  Photographic Camera
  Production of X-Rays
  Radiation Hazards
  Radius of Gyration
  Semiconductor diode
  Significant Figures
  Simple Harmonic Motion
  Speed of sound
  The Shell Theorem
  Theory of Magnetism
  Total Internal Reflection
  Vacuum Diode
  Wave Motion
  Absolute Zero Temperature
  Black Body Radiation
  Black Hole
  Complimentary Colours
  Cosmic Rays
  Does Light Has Weight
  Doppler Effect
  Faster Than Light
  General Theory Of Relativity
  Light Intensity and Brightness
  Light With Zero Speed
  Monochromatic Light
  Red Shift
  Sonic Boom
  Special Theory Of Relativity
  Standing Waves
  Super Conductivity
  Vanallen Belts
  Anti Lock Braking System
  Atomic Clock
  DC and AC
  Forensic Science
  Global Postioning System
  IC Engines
  Jantar Mantar
  Light Propulsion
  Microwave Oven
  Seven Wonders of the World


Vitamins are organic substances required by the human body in minute quantities for normal growth and maintenance of health. Vitamins are not energy giving food but are essential to keep our body healthy and free from diseases. So they are often referred to as protective food.The human body cannot synthesise vitamins except for Vitamin D, which the skin can manufacture in the presence of sunlight. Therefore vitamins have to be included in our diet. Vitamins are present in small amounts in our natural food. Deficiency in vitamins in our diet will manifest in deficiency symptoms leading to a deficiency disease. Vitamins are generally classified into two groups:

  • Fat soluble vitamins
  • Water soluble vitamins

Fat soluble vitamins include Vitamins A, D, E and K. Water soluble vitamins include Vitamin B complex and Vitamin C.
Deficiency of Vitamin A causes Night- blindness, deficiency of Vitamin B1 causes Beri-beri, deficiency of Vitamin C causes Scurvy and deficiency of Vitamin D causes Rickets. Vitamin K is essential for clotting of blood and its deficiency causes haemorrhage.

Show Explanation