NEWLY FORMED CELLS HAVE FEATURES MODIFIED FOR FUNCTION
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RED BLOOD CELL
LOST NUCLEI AND PACKED WITH HAEMOGLOBIN TO CARRY LOTS OF OXYGEN
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TISSUE
A GROUP OF SIMILAR CELLS WITH SIMILAR FUNCTIONS
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EXAMPLES OF TISSUES
BONE MUSCLE BLOOD XYLEM
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ORGAN
A COLLECTION OF 2 OR MORE TISSUES THAT PERFORM SPECIFIC FUNCTIONS
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EXAMPLES OF ORGANS
BRAIN KIDNEY LEAF FLOWER
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ORGAN SYSTEM
A COLLECTION OF SEVERAL ORGANS THAT WORK TOGETHER
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EXAMPLES OF ORGAN SYSTEMS
DIGESTIVE SYSTEM ROOT SYSTEM
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ORGANISM
A WHOLE ANIMAL OR PLANT
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EXAMPLES OF ORGANISMS
CAT ELEPHANT OAK TREE
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DIFFUSION
THE SPREADING OF PARTICLES FROM AN AREA OF HIGH CONCENTRATION TO AN AREA OF LOW CONCENTRATION *PARTICLES MOVE DOWN CONCENTRATION GRADIENT*
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OSMOSIS
THE MOVEMENT OF WATER MOLECULES FROM AN AREA OF HIGH CONCENTRATION TO AN AREA OF LOW CONCENTRATION *MOLECULES MOVE DOWN THE CONCENTRATION GRADIENT*
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ACTIVE TRANSPORT
THE MOVEMENT OF PARTICLES FROM AN AREA OF LOW CONCENTRATION TO AN AREA OF HIGH CONCENTRATION USING ENERGY . *PARTICLES MOVE UP THE CONCENTRATION GRADIENT*
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WHAT ARE ENZYMES?
BIOLOGICAL CATALYSTS THAT SPEED UP REACTIONS
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HOW DO ENZYMES CATALYSE?
MUST COLLIDE AND LOCK TOGETHER
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WHAT IS THIS METHOD CALLED?
THE LOCK AN KEY METHOD
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WHAT HAPPENS IF I INCREASE THE TEMPERATURE?
SPEED UP ENZYME = MORE LIKELY TO COLLIDE HIGH TEMPERATURE = BREAK THE CHEMICAL BOND AND CHANGE SHAPE MEANING ACTIVE SITE AND SUBSTRATE DON'T FIT
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WHAT IS IT CALLED WHEN THE ACTIVE SITE AND SUBSTRATE DON'T FIT?
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