NUCLEIC ACIDS

Nucleic acids are generally present inside the nucleus they are polymer of Nucleotide.
They composed of carbon,hydrogen,oxygen and nitrogen.
They are genetic materials in living organisms.
They store and transmit genetic information.
Nucleic acids are negatively charged.

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Carbohydrates

Carbohydrates are the common group of organic compound in nature.

Cellulose is the commons carbohydrate in nature.
In carbohydrates oxygen to hydrogen ratio is 1: 2.
Based on the structure the carbohydrates can be divided into 3 catogaries,
             1. Monosaccharides
             2. Disaccharides 
             3. Polysaccharides

Polysaccharides can be divided into 2 groups
             1.structural polysaccharides
             2.storage polysaccharides

                                       1.MONOSACCHARIDES
                                                                                    Monosaccharides are composed of  simple sugar units.
Hexoses are the common rule of monosaccharides.Glucose is the most common hexose.
              Ex;glucose present in fruits 
                    lactose present in milk
                    
                                   2.DISACCHARIDES
                                                                      Disaccharides formed by combining  2 monosaccharides by glicosilic bond.
Usually hexoses are going to form disaccharides.

There are 3 types of disaccharides 
          1.Moltose
          2.Lactose
          3.Sucrose

                                  3.POLYSACCHARIDES
                                                                             Large number of monosaccharides linked to form polysaccharides.
Forming a polysaccharide polymersization of monosaccharide have to be occur.
Polysaccharides are large complex molecule which have a high molecular weight.

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Metabolism

The sum of chemicial activities taking place in an organisms is its metabolism.

It includes catabolic reaction and anabolic reaction
          1. Catabolism,
                                The metabolic break down of complex molecules into simple once often result is releasing of energy,
                          Ex; cellular respiration

         2. Anabolism,
                             Chemical reactions in which simple substances are combine to form more complex molecule. Anabolic reaction usually acquir energy
                          Ex; Photosynthesis in plants

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Diversity of living Organisms

Living organisms shows a wide range of variations in scize ,shape and their distributions.

                          Ex; scize of the bacteria cell is about 0.25-2 micro meters.
                                the height of the red wolf is about 100m

The living organisms can be unicellular or multicellular
                         Ex; ameoba [unicellular]
                               lion,dog [multicellular]

Living organisms distribute all the ends of the earth such as water, air and soil.

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