Science 777777777777777777 Week 1- Day 4.pptx

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1. LEARNING OBJECTIVES

2. Identify the contributions of different scientists in the cell theory

3. Construct a labeled diagram of a plant cell showing correct placement of organelles.

4. Appreciate the complexity of plant cell structures by expressing their importance to plant life.

5. IS LIFE POSSIBLE WITHOUT THE CELL?

6. WHAT PARTS OF THE CELL DO YOU KNOW?

7. “ORGANEL LES MATCH-UP” Each group is given cards with organelle names and separate cards with their functions. Students match the name to the correct function.

8. DISTRIBUTE THIS WORKSHEET

9. CELLS Cells are microscopic units that collectively carry out the processes that make an organism a living entity.

10. Your body is composed of trillions of cells of around 200 different types. Your brain is made up of brain cells, your skeleton of bone cells, and your heart of cardiac muscle cells.

11. WHAT IS COMMON TO ALL SPECIMENS?

12. He was an English physicist who played an important role in Scientific Revolution. He was one of the greatest experimental scientists of his time. ROBERT HOOKE (1635-1703)

13. ROBERT HOOKE (1635-1703) In 1665, Hooke wrote the book Micrographia in which he coined the term “cell” to describe the structures he saw in a slice of cork under the microscope.

14. Some of his famous inventions include the iris diaphragm of the camera, the universal joint, an early prototype of the respirator, and the balance spring. ROBERT HOOKE (1635-1703)

15. THE BIG IDEA (TENETS) All living things are made of cells. The cell is the basic unit of structure and function in organisms. All cells come from pre-existing cells (by cell division).

16. MATTHIAS JAKOB SCHLEIDEN (BOTANIST,1838) What he studied : Thin slices of plant tissues under the microscope.

17. MATTHIAS JAKOB SCHLEIDEN (BOTANIST,1838) Key insight: Every part of a plant is built from cells (you can see the “little rooms” in cork/leaf).

18. MATTHIAS JAKOB SCHLEIDEN (BOTANIST,1838) Contribution to the theory: Helped establish Tenet #1 for plants and pushed the idea that the cell is the foundational unit of life.

19. THEODOR SCHWANN (ZOOLOGIST/PHYSIOLOGIST,1839) What he studied : Animal tissues (e.g., cartilage, nerve, muscle) with improved microscopes.

20. THEODOR SCHWANN (ZOOLOGIST/PHYSIOLOGIST, 1839) Key insight: Animals are also made of cells, and the cell is the basic unit of structure and function in both plants and animals.

21. THEODOR SCHWANN (ZOOLOGIST/PHYSIOLOGIST,1839) Contribution to the theory: Generalized Schleiden’s finding to all organisms and articulated Tenets #1 and #2 together.

22. RUDOLF VIRCHOW (PHYSICIAN/PATHOLOGIST, 1855) What he studied: Diseased and healthy tissues; how tissues grow and repair.

23. RUDOLF VIRCHOW (PHYSICIAN/PATHOLOGIST, 1855) Key insight: “Omnis cellula e cellula” — every cell comes from another cell (no spontaneous appearance).

24. RUDOLF VIRCHOW (PHYSICIAN/PATHOLOGIST, 1855) Contribution to the theory: Completed Tenet #3, explaining growth, healing, and development by cell division, and founding cellular pathology (disease starts in cells).

25. MODERN MOLECULAR BIOLOGY HAS ADDED MANY PRINCIPLES TO CELL THEORY.

26. ENERGY FLOWS WITHIN CELLS

27. CELLS CONTAIN DNA, WHICH IS PASSED ON FROM A PARENT CELL TO THE DAUGHTER CELLS DURING CELL DIVISION.

28. ALL CELLS HAVE BASICALLY THE SAME CHEMICAL COMPOSITION AND METABOLIC ACTIVITIES.

29. CELL ACTIVITY DEPENDS ON THE ACTIVITIES OF SUBCELLULAR STRUCTURES WITHIN THE CELL.

30. WHAT ARE THE THREE TENETS?

31. WHAT DID HE CONTRIBUTE TO MOLECULAR BIOLOGY?

32. WHAT DID HE CONTRIBUTE TO MOLECULAR BIOLOGY?

33. WHAT DID HE CONTRIBUTE TO MOLECULAR BIOLOGY?

34. WHAT DID HE CONTRIBUTE TO MOLECULAR BIOLOGY?

35. CELL THEORY — SENTENCE COMPLETION

36. A) Core Ideas (fill in the blanks) According to Cell Theory, all __________ __________ are made of __________. The __________ is the basic unit of __________ and __________ in living things. Word bank (use each word/phrase once or more): cells • living • things • cell • structure • function • new • pre-existing • observe • naked eye

37. 3. All __________ come from __________ cells (by cell division). 4. Microscopes mattered because they let scientists __________ structures too small for the __________. Word bank (use each word/phrase once or more): cells • living • things • cell • structure • function • new • pre-existing • observe • naked eye

38. B) Who did what? (scientists) 5. Robert Hooke looked at thin slices of __________ and coined the word “cells” because the tiny boxes looked like __________. Word bank (use each word/phrase once or more): plant • cork • animal(s) • rooms • cells • structure • function • cell

39. B) Who did what? (scientists) 6. Matthias Schleiden studied __________ tissues and concluded they are made of __________. Word bank (use each word/phrase once or more): plant • cork • animal(s) • rooms • cells • structure • function • cell

40. B) Who did what? (scientists) 7. Theodor Schwann showed that __________ are also made of cells and said the cell is the basic unit of __________ and __________. Word bank (use each word/phrase once or more): plant • cork • animal(s) • rooms • cells • structure • function • cell

41. B) Who did what? (scientists) 8. Rudolf Virchow stated “omnis cellula e cellula,” which means every cell comes from another ________. Word bank (use each word/phrase once or more): plant • cork • animal(s) • rooms • cells • structure • function • cell

42. C) Apply the theory (everyday examples) 9. A cut heals because __________ __________ to replace damaged ones. Word bank (use each word/phrase once or more): cells • divide • yeast • reproduce • chloroplasts • photosynthesis • not • unicellular • multicellular

43. C) Apply the theory (everyday examples) 10. Bread rises when __________ (a single-celled fungus) __________ and releases gas Word bank (use each word/phrase once or more): cells • divide • yeast • reproduce • chloroplasts • photosynthesis • not • unicellular • multicellular

44. C) Apply the theory (everyday examples) 11. Leaves are green because plant cells contain __________, which carry out __________. Word bank (use each word/phrase once or more): cells • divide • yeast • reproduce • chloroplasts • photosynthesis • not • unicellular • multicellular

45. C) Apply the theory (everyday examples) 12. Viruses are __________ cells because they lack organelles and must use a host to __________. Word bank (use each word/phrase once or more): cells • divide • yeast • reproduce • chloroplasts • photosynthesis • not • unicellular • multicellular

46. C) Apply the theory (everyday examples) 13. An organism made of only one cell is called __________; one made of many cells is __________. Word bank (use each word/phrase once or more): cells • divide • yeast • reproduce • chloroplasts • photosynthesis • not • unicellular • multicellular

47. A) 1) living things; cells 2) cell; structure; function 3) cells; pre-existing 4) observe; naked eye ANSWER KEY B) 5) cork; rooms 6) plant; cells 7) animals; structure; function 8) cell

48. C) 9) cells divide 10) yeast; reproduces (or multiplies) 11) chloroplasts; photosynthesis 12) not; reproduce 13) unicellular; multicellular ANSWER KEY

49. THANK YOU FOR LISTENING