Characteristics of Life
Terms
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- MOVEMENT
- CHANGE IN POSITION OF THE BODY OR OF A BODY PART; MOTION OF AN INTERNAL ORGAN
- RESPONSIVENESS
- REACTION TO A CHANGE INSIDE OR OUTSIDE THE BODY
- GROWTH
- INCREASE IN BODY SIZE WITHOUT CHANGE IN SHAPE
- REPRODUCTION
- PRODUCTION OF NEW ORGANISMS AND NEW CELLS
- RESPIRATION
- OBTAINING OXYGEN, REMOVING CARBON DIOXIDE, AND RELEASING ENERGY FROM FOODS
- DIGESTION
- BREAKDOWN OF FOOD SUBSTANCES INTO SIMPLER FORMS THAT CAN BE ABSORBED AND USED
- ABSORPTION
- PASSAGE IF SUBSTANCES THROUGH MEMBRANES AND INTO BODY FLUIDS
- CIRCULATION
- MOVEMENT OF SUBSTANCES IN BODY FLUIDS
- ASSIMILATION
- CHANGING ABSORBED SUBSTANCES INTO CHEMICALLY DIFFERENT FORMS
- EXCRETION
- REMOVAL OF WASTES PRODUCED BY METABOLIC REACTIONS
- WATER
- MOST ABUNDANT CHEMICAL IN THE BODY. REQUIRED FOR MANY METABOLIC PROSESS AND PROVIDES THE ENVIRONMENTIN WHICH MOST OF THEM TAKE PLACE. ALSO TRANSPORTS SUBSTANCES WITHIN THE ORGANISM ANS IS IMPORTANT IN REGULATING BODY TEMPERATURE.
- FOODS
- SUBSTANCE THAT PROVIDE THE BODY WITH NECESSARY CHEMICALS IN ADDITION TO WATER. SOME OF THERE CHEMICALS ARE USED AS ENERGY SOURCES, OTHERS SUPPLY RAW MATERIALS FOR BUILDING NEW LIVING MATTER, AND STILL OTHERS HELP REGULATE VITAL CHEMICAL REACTIONS.
- OXYGEN
- GAS THAT MAKES UP ABOUT ONE-FIFTH OF ORDINARY AIR. IT IS USED TO RELEASE ENERGY FROM FOOD SUBSTANCES. THIS ENERGY IN TURN DRIVES METABOLIC PROCESSES.
- HEAT
- FORM OF ENERGY. PRODUCT OF METABOLIC REACTIONS, ANS THE DEGREE OF HEAT PRESENT PARTLY DETERMINES THE RATE AT WHICH THESE REACTIONS OCCUR. THE MORE HEAT THE FASTER CHEMICAL REACTIONS OCCUR.
- PRESSURE
-
APPLICATION OF FORCE TO SOMETHING.
Atmospheric Pressure-FORCE ON THE OUTSIDE OF THE BODY DUE TO THE WEIGHT OF AIR ABOVE IT.
Hydrostatic Pressure-ORGANISMS LIVING UNDER WATER EXPERIENCE THIS KIND OF PREASSURE.