Wednesday, 30 September 2026

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / PERSONALITIES IN BIOLOGY / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

 

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / PERSONALITIES IN BIOLOGY / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY



KERALA PSC / BIOLOGY / MEDICAL SCIENCE / PERSONALITIES IN BIOLOGY / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY


ALEXANDER FLEMING (1881-1955)



British Bacteriologist, Nobel laureate, best known for his discovery of pencillin, while he was the Assistant Director of St.Mary’s hospital medical school of university of London in 1928, Fleming accidently observed that a mould (later identified as pencillium notatum) lysed colonies of bacteria styphylococci a common cause of wound infection, he called his new discovert ‘Pencillin”. But he was unable to obtain pencillin in a sufficiently pure form to produce reliable result in patient, a group of Oxford University team including Howard Florey and chemist Ernst Chin was succeeded in producing small amount of pencillin which has made it possible to cure dangerous diseases and thus to save thousands of lives every year. Alexander Fleming shared 1945 Nobel prize for medicine/physiology with Florey and Chin.

 

LOUIS PASTEUR (1822-1895)



French chemist and Microbiologist, Father of Microbiology he is famous for his remarkable achievement in the cause of prevention of disease. He created the first vaccine for rabies, anthrax, he devised a technique which could prevent milk and wine from decaying is called pasteurization. Pasteur Institute is in Paris.

 

ROBERT KOCH (1843-1910)



German Physician, he isolated Bacillus Anthracis (1877) Tuberculosis bacillus (1882), and Vibrio Cholerac (1883) he was awarded Nobel Prize in Physiology/Medicine in 1905 for his tuberculosis finding.

 

JOSEPH LISTER (1827-1912)



British surgeon pioneer of antiseptic surgery. He promoted the idea of sterile surgery by using Carbolic Acid (Phenol)

 

RONALD ROSS (1857-1932)



British doctor lived in India received Nobel Prize for medicine in 1902 for his discovery of Malarial parasite in the gastro intestinal tract of Anopheles mosquito led to the realization that Malaria was transmitted by Anopheles.

 

CHRISTIAAN BERNARD (1922-2001)



South African Cardiac Surgeon who performed the world first successful human to human heart transplantation in 1967

 

JAMES D WATSON AND FRANCIS CRICK



Co-discovers of structure of DNA in 1953. They used X-ray diffraction technique formulated by Rosalind Franklin and proposed double helical structure of DNA. They awarded Nobel Prize in 1962

 

EDWARD JENNER (1749-1823)



English Doctor who was the pioneer of Small pox. Vaccine (1796), he is called ‘Father of Immunology’ vaccination refers to ‘intentional administration of harmless or less harmful form of a pathogen to induce specific immune response that protects individual to later exposure to the same pathogen.

 

JAGADISH CHANDRA BOSE (1858-1937)



A Bengal born Indian Physicist, Biologist. Botanist and Archeologist, Bose’s main discovery related to Radio and Remote Wireless Signelling the invented Crescograph an instrument used to measure plant response to various stimuli. He was the 1st person from Indian subcontinent to receive US patent.

 

HAR GOBIND KHORANA (1922-2011)



An Indian born American biochemist, Nobel Prize winner in 1968 for physiology/Medicine for research that helped to show how unelectide in nuclic acid which carry genetic code of this cell control, the often referred to as ‘maker of artificial gene’

 

GRANT BATING AND CHARLES BEST



Canadian doctors, they discovered Insulin in 1921 and awarded Nobel Prize in 1923. Bating remains the youngest Nobel Prize winner in the field of physiology/medicine.

 

NORMAN BORLANG (1914-2009)



American Agronomist and known as the father of Green Revolution in the world. He developed Semi dwarf high yield disease resistant wheat variety. He was awarded Nobel Prize for Peace in 1970

 

M.S SWAMINATHAN



A Kerala born Indian Genetist, renowned for his leading role in Indian Green Revolution under this programme high yield varieties of wheat and rice seedlings were planted throughout the country.


KERALA PSC / BIOLOGY / MEDICAL SCIENCE / PERSONALITIES IN BIOLOGY / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / DISEASE RELATED ORGANIZATIONS / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

 

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / DISEASE RELATED ORGANIZATIONS / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY



KERALA PSC / BIOLOGY / MEDICAL SCIENCE / DISEASE RELATED ORGANIZATIONS / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY


World Health Organization (WHO)

Specialized agency of United Nations (UN) is concerned with international public health, setting norms and standard, providing technical support to countries. It was established on 7th April 1948 with headquarters in Geneva Switzerland. WHO has been playing leading role in eradication of Small pox. Its current priorities include communicable disease such as AIDS, Malaria, Tuberculosis. WHO is responsible for World Health Report, a leading International publication on health.

Global Polio Eradication Programme

Global Polio Eradication Programme is a Joint effort led by WHO, UNICEF and The Rotary Foundation. The vision of these organization is eradication of polio from the world. In 1994, India government formally launched Pulse Polio Campaign, the current campaign involve annual vaccination of all children under the age five. On 25th February 2012, India was officially struck off the list of Polio endemic countries by WHO UNICEF’s Polio Ambassador is Mr. Amitabh Bachan.

 

National AIDS Control Organization (NACO)

Established in 1992, provides leadership role in the HIV/AIDS Control Programme in India. First detecting of AIDS Case in 1986 from Chennai.

There are three phase of this programme, first phase (NACP I) implemented during 1992-99, Second phase (NACP-II) started in 1999 to 2006. The current phase (NACP-III) started in 2007 continues upto 2012.

 

Revised National Tuberculosis Program (RNTCP)

A Government of India initiative to control Tuberculosis by accepting the principles of directly Observed Treatment Short Course (DOTS), which is the global TB Control Strategy followed by WHO, RNTCP launched in 1992. India has had an ongoing TB Programme since 1962. First phase of RNTCP (1998-2005).


KERALA PSC / BIOLOGY / MEDICAL SCIENCE / DISEASE RELATED ORGANIZATIONS / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / COMMON VIRAL DISEASES AND CAUSING ORGANISMS / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

 

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / COMMON VIRAL DISEASES AND CAUSING ORGANISMS / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY



KERALA PSC / BIOLOGY / MEDICAL SCIENCE / COMMON VIRAL DISEASES AND CAUSING ORGANISMS / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY


Common Viral Diseases

AIDS/HIV

Human Immuno deficiency virus a retrovirus

Poliomyelities

Polio virus

Chicken Pox

Varicella Zoster

Small pox

Variola virus

Rabies

Lyssa virus

Influenza

Influenza virus (A,B,C)

Hepatitis B

Hepatitis A virus

Hepatitis B

Hepatitis B virus

Mumps

Myxo virus

Common cold

Rhino virus


KERALA PSC / BIOLOGY / MEDICAL SCIENCE / COMMON VIRAL DISEASES AND CAUSING ORGANISMS / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / COMMON BACTERIAL DISEASES AND CAUSING ORGANISMS / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

 

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / COMMON BACTERIAL DISEASES AND CAUSING ORGANISMS / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY



KERALA PSC / BIOLOGY / MEDICAL SCIENCE / COMMON BACTERIAL DISEASES AND CAUSING ORGANISMS / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY


Common Bacterial Diseases and Causing Organisms

Tuberculosis

Mycobacterium tuberculosis

Leprosy

Myco bacterium Leprae

Meningitis

Neisseria Meningtidis

Typhoid

Salmonell typhi

Cholera

Vibrio Cholerae

Diphtheria

Corneyebacterium dipheriae

Tetanus

Clostridium tetani

Plague

Yersinia pestis

Petrussis

Bordetella Pertussis

Gonorrhoea

Neisseria Gonorhoeae

Syphillis

Treponena Pallidum

Botulism

Clostridium botulinum

Trachoma

Chlmydia trachomatis


KERALA PSC / BIOLOGY / MEDICAL SCIENCE / COMMON BACTERIAL DISEASES AND CAUSING ORGANISMS / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / ALZHEIMER’S / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

 

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / ALZHEIMER’S / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY



KERALA PSC / BIOLOGY / MEDICAL SCIENCE / ALZHEIMER’S / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY


Alzheimer’s is the most common form of dementia. This incurable, degenerative and terminal disease was first described by German psychiatrist and neuropathologist Alois Alzheimer in 1906 and was named after him. In the early stages, the most commonly recognized symptom in inability to acquire new memories, such as difficulty in recalling recently observed facts. As the disease advances, symptoms include confusion, irritability and aggression, mood savings language breakdown, long –term memory loss, and the general withdrawal of the sufferer as their senses decline.

 

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / ALZHEIMER’S / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / INSTRUMENTS USED IN MEDICAL SCIENCE / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

 

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / INSTRUMENTS USED IN MEDICAL SCIENCE / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY



KERALA PSC / BIOLOGY / MEDICAL SCIENCE / INSTRUMENTS USED IN MEDICAL SCIENCE / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY


Diagnostic Instrument

·      Electro Cardiography (ECG): It detects that changes in electrical potential generated by contraction of heart muscles, Willem Einthovan discovered ECG in 1906. It helps to diagnose heart disease.

·      Electro Encephalograph (EEG): It is used to measure electrical activity of brain, EEG is used to diagnose epilepsy, Encephalities, Dimentia and brain tumour. Hans Berger (1929) successfully recorded for the first time EEG of man.

·      Electromyography (EMG): Used to record muscles action potential

·      Auto Analyser: These are computerized instruments used for biochemical identification of various body fluids such as urea, cholesterol glucose, protein.

·      Sphygmo manometer: It is commonly called BP apparatus

·      Laproscope

 

Imaging Instrument

·      X-Ray: First important tool for imaging discovered by Wilhelm Roentgen in 1895

·      Tomography: used to create 3D images of internal parts

·      CT Scanning (Computed Tomographic Scanning): Developed by Godfrey Hounsfield in 1968 (Nobel Prize in 1979) used to scan internal parts through use of radioactive isotopes

·      CAT Scanning (Computerised Axial Tomography): It helps to show condition of soft tissues of body through use of X-ray. Widely used to image, brain tumour, abscess

·      Magnetic Resonance Imaging (MRI): It was originally discovered 1946 independently by Felix Bloch and Purcell, MRI is a diagnostic technique that provide high quality cross sectioned or three dimensional image of the organ without using X-ray or radiation, it uses magnetic field and radio waves. Eg., specifically used in studying brain and spinal chord.

·      Ultra Sound Scanning (Echography or Sonography): used to reveal the structural anatomy or stone in urinary tract or kidney, widely used in obstetrics.

·      Nuclear Magnetic Resonance Spectroscopy (NMR): used for detection of chemicals such as phosphorus and calcium

·      Endoscope: Instrument used for internal examination by direct vision through a lighted tubes fitted with a system of lense.

 

Therapeutic Instrument

·      Pacemaker: It supplies electrical impulses to heart to maintain heartbeat as regular rate, pacemaker was invented by Chardack (1960) first heart pacemaker was designed by Wilson Great Batch, Lithium Halida battery provide for power over 10 years.

·      Medical Lasers: Lasers are high energy particles of light amplified by stimulated emission of radiation. Different types of lasers can be generated like Argon laser, Neon laser, Carbon dioxide laser.

·      Lasers are now commonly used in many kind of surgical operations, ophthalmology and Oncology.

·      Oxygenator (Heart Lung Machine): in 1953, the first open heart surgery was performed by using heart lung machine

·      Blood Dialyser (Artificial Kidney): The apparatus is elaborate and bulky and it is used for sustain kidney function when kidney fails.

·      Angioplasty: used to open blocked coronary artery vessel through ballooning

·      Angiography: An X-ray opaque dye is injected into arteries, and series of X-ray films are taken, diagnosis of heart wall, valves, ventricles, coronary arteries etc…


KERALA PSC / BIOLOGY / MEDICAL SCIENCE / INSTRUMENTS USED IN MEDICAL SCIENCE / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

Tuesday, 29 September 2026

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / PARKINSON’S DISEASE / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

 

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / PARKINSON’S DISEASE / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY



KERALA PSC / BIOLOGY / MEDICAL SCIENCE / PARKINSON’S DISEASE / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY


 

It is a degenerative disorder of the central nervous system. It results from the death by unknown causes of the dopamine containing cells of the substantia nigra, which is a region of the mid brain. Early, in the course of the disease, the most obvious symptoms are movement – related, including shaking, rigidity, slowness of movement and difficulty with walking and gait. Later, cognitive and behavioural problems may arise, with dementia commonly occurring in the advanced stages of the disease. The disease is named after the English doctor James Parkinson, who published the first detailed description in “An Essay on the Shaking Palsy” (1817).



KERALA PSC / BIOLOGY / MEDICAL SCIENCE / PARKINSON’S DISEASE / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / IMPORTANT VACCINES / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

 

KERALA PSC / BIOLOGY / MEDICAL SCIENCE / IMPORTANT VACCINES / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY



KERALA PSC / BIOLOGY / MEDICAL SCIENCE / IMPORTANT VACCINES / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY


Important Vaccines

Vaccine

Discovered by

Small Pox

Edward Jenner (1786)

Cholera

Louis Pasteur (1880)

Diphtheria and Tetanus

Emil Adolf Von Belming & Shibasaburo Kitasato (1891)

TB Vaccine

Leon Calmette and Camille Guerin (1992)

Polio Vaccine

Jonas E Salk (1954)

Oral Polio Vaccine

Albert Bruce Sabin (1955)

Measles Vaccine

John F Enders (1960)


KERALA PSC / BIOLOGY / MEDICAL SCIENCE / IMPORTANT VACCINES / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY