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INTRODUCTORY INFORMATION CELL STRUCTURE & FUNCTION.

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Presentation on theme: "INTRODUCTORY INFORMATION CELL STRUCTURE & FUNCTION."— Presentation transcript:

1 INTRODUCTORY INFORMATION CELL STRUCTURE & FUNCTION

2  HE MADE A “MICROSCOPE”  A SINGLE POWERFUL LENS  LOOKED AT A DROP OF POND WATER  AND SAW “ANIMALCULES” (PROTISTS)

3  CREDITED WITH DISCOVERING AND NAMING THE CELL  USED ONE OF THE FIRST LIGHT MICROSCOPES  VIEWED A SLICE OF CORK – SAW THE CELL WALLS OF CORK TISSUE;  ITS STRUCTURE REMINDED HIM OF A MONASTERY’S TINY ROOMS CALLED CELLS

4 I could exceedingly plainly perceive it to be all perforated and porous, much like a Honey-comb, but that the pores of it were not regular.... these pores, or cells,... were indeed the first microscopical pores I ever saw, and perhaps, that were ever seen, for I had not met with any Writer or Person, that had made any mention of them before this...

5  GERMAN BOTANIST  CONCLUDED THAT ALL PLANTS ARE MADE OF CELLS

6  GERMAN ZOOLOGIST  CONCLUDED THAT ALL ANIMALS ARE MADE OF CELLS

7  GERMAN PHYSICIAN  STUDIED CELL REPRODUCTION  CONCLUDED “WHERE A CELL EXISTS, THERE MUST HAVE BEEN A PREEXISTING CELL”

8  ALL LIVING THINGS ARE MADE OF CELLS.  CELLS ARE THE BASIC UNITS OF STRUCTURE AND FUNCTION IN LIVING THINGS  NEW CELLS ARE PRODUCED FROM EXISTING CELLS

9  PROKARYOTIC – “NO TRUE NUCLEUS” OR  CELLS THAT DO NOT HAVE MEMBRANE-BOUND ORGANELLES  EUKARYOTIC – “TRUE NUCLEUS” OR  CELLS THAT DO CONTAIN MEMBRANE-BOUND ORGANELLES

10  ORGANELLES ARE:  CELL WALL  CELL MEMBRANE  RIBOSOMES  CYTOPLASM

11  THE ONLY PROKARYOTIC ORGANISMS ARE THE BACTERIA  REPRODUCE BY BINARY FISSION  REPRODUCE EXPONENTIALLY  REVIEW QUESTION: WHERE IS DNA FOUND IN A BACTERIAL CELL?

12  CONTAIN MEMBRANE-BOUND ORGANELLES  SPECIALIZED STRUCTURES THAT PERFORM SPECIFIC CELLULAR FUNCTIONS  PLANTS, ANIMALS, FUNGI AND PROTISTS ARE ALL EUKARYOTES

13  ALL CELLS CONTAIN DNA – A NUCLEIC ACID;  DNA IS NOT AN ORGANELLE;  ALL CELLS HAVE A CELL MEMBRANE;  NOT ALL CELLS HAVE A CELL WALL;  ANIMAL CELLS NEVER HAVE A CELL WALL;

14  CHAPTER 7 PAGE 169  SECTION 7-2 PAGES 173 – 183  MAKE A TWO-COLUMN CHART OF THE CELL ORGANELLES, GIVING THE ORGANELLE NAME AND FUNCTION


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