POLYMER CLASS 12 CHEMISTRY NOTES [PDF DOWNLOAD]

POLYMER CLASS 12 CHEMISTRY NOTES [PDF DOWNLOAD] Polymer is defined as a high molecular weight compound formed by the combination of a large number of one or more types of small molecules(monomers). CLASSIFICATION OF POLYMERS:- BASED ON SOURCE: NATURAL POLYMERS:– These are of natural origin and these are found in plants and animals. Natural polymers […]

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DIGESTION AND ABSORPTION:-GASTRO – INTESTINAL HORMONES

DIGESTION AND ABSORPTION:-GASTRO – INTESTINAL HORMONES

DIGESTION AND ABSORPTION:-GASTRO – INTESTINAL HORMONES   GASTRO – INTESTINAL HORMONES:-   GASTRIN:- Released by stomach Stimulate Secretion of gastric juice   ENTEROGASTERONE OR GASTRIC INHIBITORY PEPTIDE:– Secreted by Small intestine Inhibit secretion of gastric juice   SECRETIN:- It is first discovered hormone by scientist. Secreted by small intestine. Stimulate secretion of Bile, Bicarbonate in

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DIGESTION AND ABSORPTION:- PHYSIOLOGY OF DIGESTION

DIGESTION AND ABSORPTION:- PHYSIOLOGY OF DIGESTION PHYSIOLOGY OF DIGESTION 1.DIGESTION OF CARBOHYDRATES:-   Any polyhydroxy aldehyde or ketone called carbohydrates. About 30% of starch is hydrolysed in buccal cavity by salivary amylase/ ptyalin enzyme (optimum pH=6.8) into Maltose, Isomaltose and α-dextrin. Lysozyme present in saliva acts as an antibacterial agent that prevents infections. Maltose, Isomaltose

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DIGESTION AND ABSORPTION:- DIGESTIVE GLANDS

DIGESTION AND ABSORPTION:- DIGESTIVE GLANDS SALIVARY GLAND LIVER PANCREAS   SALIVARY GLAND:- It is an EXOCRINE GLAND. They have They secrete saliva. There are three pairs of salivary glands present in human.     TYPES OF SALIVARY GLAND PAROTID SALIVARY GLAND SUB – MAXILLARY/ SUB – MANDIBULAR SALIVARY GLAND SUB – LINGUAL SALIVARY GLAND   PAROTID

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DIGESTION AND ABSORPTION:- ALIMENTARY CANAL

DIGESTION AND ABSORPTION :- ALIMENTARY CANAL

  DIGESTION AND ABSORPTION:- ALIMENTARY CANAL Digestion:- It is the process of conversion of complex and unabsorbable or indiffusible food materials into simple and absorbable or diffusible forms.   HYDROLYSIS:- Splitting of compound by the adding of water.   EXTRACELLULAR/ INTERCELLULAR DIGESTION:- Digestion taking place outside the cell. E.g., Digestion in human   INTRACELLULAR DIGESTION:-

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IMPORTANT TERMS OF PRINCIPLES OF INHERITANCE AND VARIATION

IMPORTANT TERMS OF “PRINCIPLES OF INHERITANCE AND VARIATION”

IMPORTANT TERMS OF “PRINCIPLES OF INHERITANCE AND VARIATION”   GENEITCS:- The study of heredity and variation. HEREDITY:- The Study of Transfer of characters from one generation  to another generation. INHERITANCE:- The process of transfer of characters from one generation to another generation. VARIATION:- The degree by which offspring differ from their parents Physical unit of

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VIRUS, VIROIDS,PRIONS,LICHENS

VIRUS, VIROIDS,PRIONS,LICHENS VIRUSES:- Virus also contain genetic material, that could be either RNA or DNA. Apart from genetic materials, Viruses also contains proteins. Single stranded RNA (ssRNA) Virus infect plants. Either double stranded DNA(dsDNA) or double stranded RNA(dsRNA) infect animals. Contagium vivum fluidum (infectious living fluid) = by M.W Beijerinek (1898) Virus can be Crystallised

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