 WHAT ARE ALL THE LIFE PROCESSES? › H.N.T.R.S.G.E.R.M.R  WHICH ONES HAVE WE COVERED? › H.N.T.R.S.G.E.R.M  WHAT’S LEFT? › R  REPRODUCTION!!  WHAT IS REPRODUCTION?  REPRODUCTION › THE PROCESS BY WHICH LIVING THINGS PRODUCE NEW ORGANISMS OF THEIR OWN KIND  HOW DOES REPRODUCTION WORK? › REMEMBER: ALL CELLS ARISE FROM PRE-EXISTING CELLS › THE PROCESS BY WHICH CELLS MAKE MORE CELLS IS CALLED… ›CELL DIVISION  CELL DIVISION CAN BE BROKEN INTO TWO CATEGORIES › MITOTIC CELL DIVISION EXACT COPIES ARE MADE › MEIOTIC CELL DIVISION NOT EXACT COPIES ARE MADE  *WE WILL DISCUSS THIS ONE FURTHER NEXT CHAPTER*  MITOTIC CELL DIVISON › CLICK THE PIC FOR THE CELL DIVISION SONG  MITOTIC CELL DIVISION › A.K.A. ASEXUAL REPRODUCTION  REPRODUCTION WITHOUT SEX (REQUIRING ONLY ONE PARENT CELL) › BROKEN INTO TWO PROCESSES  MITOSIS  CYTOKINESIS  MITOSIS  MITOSIS › THE CONTENTS OF THE NUCLEUS ARE COPIED AND THEN DIVIDED TO FORM TWO IDENTICAL NUCLEI › WHY IS THIS SO IMPORTANT? IN OTHER WORDS, WHY DOES THIS NEED TO HAPPEN? (*HINT – WHAT’S IN THE NUCLEUS?)  MITOSIS › LET’S BREAK DOWN THE STAGES OF MITOSIS › CLICK THE IMAGE FOR A VIDEO  CYTOKINESIS › THE CYTOPLASM (CELL) DIVIDES IN TWO  CYTOKINESIS › IN ANIMAL CELLS  CLEAVAGE FURROW › IN PLANT CELLS  CELL PLATE FORMATION  WHY IS THERE A DIFFERENCE WITH CYTOKINESIS AND NOT WITH MITOSIS? SHOULD MITOTIC CELL DIVISION HAPPEN ALL THE TIME? WHY OR WHY NOT?  SHOULD MITOTIC CELL DIVISION HAPPEN AT THE SAME RATE ALL THE TIME? WHY OR WHY NOT?  WHAT DO WE CALL MECHANISMS THAT CAN CHANGE THE RATE OF A REACTION? (*HINT  WHAT CONTROLS INSULIN PRODUCTION?   WHAT’S A CONSEQUENCE OF MITOTIC CELL DIVISION HAPPENING UNCONTROLLABLY? C A N C E R  DON’T WORRY…NORMALLY A SPECIAL PROTEIN CALLED CYCLIN EXISTS THAT CONTROLS WHEN CELLS DIVIDE, SO THE “C” WORD IS KEPT IN CHECK  MITOTIC CELL DIVISION AS A FORM OF REPRODUCTION › ASEXUAL ONLY › PRODUCES “IDENTICAL” OFFSPRING  FORMS OF ASEXUAL REPRODUCTION › › › › › BINARY FISSION BUDDING SPORE FORMATION REGENERATION VEGETATIVE REPRODUCTION (PROPAGATION)  BINARY FISSION  BUDDING  SPORE FORMATION  REGENERATION  VEGETATIVE PROPAGATION  THAT’S MITOTIC CELL DIVISION…BUT WHAT IF YOU DON’T WANT AN “IDENTICAL” OFFSPRING?  PRESENTING MEIOTIC CELL DIVISION…COMING NEXT CHAPTER 