biology notes

LEVELS OF ORGANIZATION IN ORDER TO UNDERSTAND THE PHENOMENA OF LIFE,BIOLOGISTS  STUDY BIOLOGICAL ORGANIZATION   AT DIFFERENT LEVELS ,WHICH  ARE AS FOLLOWS; SUBATOMIC PARTICLES MOLECULAR LEVEL ORGANELLE AND CELL LEVEL TISSUE LEVEL ORGAN AND ORGAN SYSTEM LEVEL INDIVIDUAL LEVEL POPULATION LEVEL COMMUNITY LEVEL BIOSPHERE LEVEL  SUBATOMIC PARTICLES ➤ ALL THE LIVING ORGANISMS ARE MADE UP OF ELEMENTS. AND EACH ELEMENT  CONTAINS A SINGLE     KIND OF ATOM ATOMS ARE FURTHER COMPOSED OF SUBATOMIC  PARTICLES. SUBATOMIC PARTICLES     ARE SMALLER IN SIZE THAN AN ATOM.TYPICALLY  ATOM IS BROKEN DOWN INTO THREE SUBATOMIC    PARTICLES NEUTRON,ELECTRON   AND PROTON.THESE ARE MOST STABLE SUBATOMIC PARTICLES. BIO-ELEMENTS ➤ OUT OF THE 92 KINDS O ELEMENTS THAT OCCUR IN NATURE, 16 ARE CALLED  BIO-ELEMENTS.THESE    TAKE PART IN MAKING THE BODY MASS OF AN ORGANISM. BIO-ELEMENTS  ARE  ALSO REQUIRED FOR  ...

INDIVIDUAL LEVEL ➤ DIFFERENT ORGANS AND ORGANS AND ORGAN SYSTEMS ARE  ORGANIZED  TOGETHER TO FORM AN      INDIVIDUAL OR ORGANISM. IN  ORGANISM  PROCESSES,   ACTIVITIES AND FUNCTIONS ARE COORDINATED. FOR EXAMPLE;   ➤ WHEN A MAN IS ENGAGED  IN CONTINUOUS  AND HARD  EXERCISE, NOT  ONLY HIS  MUSCLES WORK       BUT ALSO THERE AN INCREASE IN THE RATE  OF RESPIRATION AND  HEARTBEAT. ➤THIS ACCELERATED RATE OF RESPIRATION AND HEARTBEAT SUPPLIES      MORE OXYGEN AND FOOD TO THE MUSCLES WITCH THEY NEED FOR     CONTINUOUS WORK. POPULATION LEVEL   ➤ A POPULATION IS DEFINED AS A GROUP OF ORGANISM OF SAME SPECIES  LOCATED AT THE SAME PLACE       IN THE SAME TIME.  BIOLOGIST OBSERVATIONS; ➤BIOLOGIST STUDIES TO THE POPULATION LEVEL WHERE THEY STUDY  INTERACTIONS AMONG MEMBERS    OF THE SAME SPECIES LIVING IN  THE SAME PLACE.  ...