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Class Starter What is a Scientist? A person who is studying or has expert knowledge of one or more of the natural or physical sciences.

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Presentation on theme: "Class Starter What is a Scientist? A person who is studying or has expert knowledge of one or more of the natural or physical sciences."— Presentation transcript:

1 Class Starter What is a Scientist? A person who is studying or has expert knowledge of one or more of the natural or physical sciences.

2 Cell Theory and the Scientists Who Helped Shape It

3 How do you think we have attained the scientific knowledge we have today? Experimenting

4 How is the body of knowledge communicated around the world? Discoveries

5 “If I have seen further, it is because I was standing on the shoulders of giants.” Sir Isaac Newton

6 Scientists and the Cell Theory

7 Hans & Zacharias Janssen 1590 Father and Son Produced first compound microscope

8 Anton van Leeuwenhoek Born: October 24, 1632 Died: August 30, 1723 He is known as the “Father of Microscopy.”

9 Anton van Leeuwenhoek Discoveries: : He looked at pond scum under the microscope and discovered small organisms he called animalcules or little animals (Protists) : discovered bacteria hap09/lesson_protista/Protista_Lesson.html#Algae

10 Robert Hooke Born: July 18, 1635 Died: March 3, 1703 Wrote and published “Micrographia” Known as the “English Father of Microscopy”

11 Robert Hooke Contributions: - He observed pieces of cork from the bark of a cork tree under the microscope. - His observations led him to coin the word “cell.” - “Cell”- means little rooms in Latin - He compared the small boxes to the small rooms that monks lived in. ession1/closer1.html

12 Matthias Schleiden Born: April 5, 1804 Died: June 23, 1881 German botanist Discovered that all plants were made of cells Contributed to the creation of the cell theory /Mathias-Jacob-Schleiden

13 Theodor Schwann Born: December 7, 1810 Died: January 11, 1882 German zoologist Concluded that all animals are made of cells. Contributed to the creation of the cell theory

14 Rudolph Virchow Born: October 13, 1821 Died: September 5, 1902 German pathologist He is known as the “Father of Pathology.” Discovered that all living cells come only from other living cells.

15 Activity Create a chart a biography in groups about your scientist. Needed for biography –Background info- When was he born? Died? Where was he from? Did he have a family? –What was his educational background? – What was he labeled as: Ex. Biologist – What was he know as? –What did he discover?

16 What is a Cell?

17 The Cell The smallest unit that can perform all life processes

18 The Cell Theory 1.All living things are made of cells. 2.Cells are the basic units of structure and function in living things. 3.Living cells come only from other living cells.

19 Characteristics of Living Things (Mr. Fadrug) M made of cells R reproduce F food or raw materials A adapt D develop R respond U use energy G grow

20 Characteristic of Non-living Things

21 Cells Tissues Organs Organ Systems Organisms

22 Unicellular vs. Multicellular One Cell Simple Cannot See Without Microscope Examples: Bacteria, Amoeba Many Cells Working Together Complex Can See Without A Microscope Examples: Humans, Plants

23 Prokaryote vs. Eukaryote Cell Does NOT Have a True Nucleus Have NO Membrane-Bound organelles Oldest Type of Cells Example: Bacteria Cell Has a True Nucleus Has Several Membrane-Bound Organelles Tend to be Larger and More Complex than Prokaryotes Examples: Human, Plants and Animals

24 Animal Cell

25 Plant Cell

26 Nucleus

27

28 Mitochondria

29 Golgi Apparatus / Bodies / Complex

30

31

32 Cell Mitochondria “Powerhouse” Nucleus “Boss” Cell Membrane “Gatekeeper” Cytoplasm Golgi Apparatus GA Lysosome Endoplasmic Reticulum ER Ribosomes Central Vacuole “Storage Bin” Cell Wall Plant Only Chloroplasts Plant Only

33 OrganelleFunction Nucleus Controls all cell activities; Contains the genetic material. “Boss” Nucleolus Spherical body in the nucleus of the cell containing RNA and produces ribosomes Cytoplasm Gelatin-like material where most of the work of the cell is carried out.

34 OrganelleFunction Endoplasmic Reticulum (ER) Folded membranes used to transport material where it is needed – ribosomes attached RibosomesTiny structures that process information; makes protein. Remember: “Eat Some Protein Ribs” LysosomeBreaks down materials that are taken into the cells and worn out organelles. “Waste Removal”

35 OrganelleFunction Cell Membrane Protective covering. Controls material that comes in and out of the cell. “Gatekeeper” MitochondriaRod shaped structure which produces the power/energy needed by the cell through cellular respiration. “Powerhouse” Golgi Apparatus (G.A.) Store and package protein.

36 OrganelleFunction Cell wallTough outer covering that supports and protects the plant cell. ChloroplastsProvides energy in plant cells by using sunlight to make sugar. Contains chemical chlorophyll. “Food Producers” Central Vacuole Spherical storage sac for water, food and waste. “Storage Bin”

37 Function Controls cell activities Jellylike material that surrounds the nucleus Releases energy from food Make protein for the cell Tubes through which materials move to all parts of the cell Controls the flow of materials into and out of the cell Breaks down worn parts of the cell Stores food, water, minerals and waste Thick outer covering of plant cells Structures in cells which contain chlorophyll Parts of Cells Cell Membrane Cytoplasm Endoplasmic Reticulum Mitochondria Nucleus Ribosomes Cell Wall Lysosome Chloroplasts Vacuole Match Function With Cell Parts

38 Function Controls cell activities Jellylike material that surrounds the nucleus Releases energy from food Make protein for the cell Tubes through which materials move to all parts of the cell Controls the flow of materials into and out of the cell Breaks down worn parts of the cell Stores food, water, minerals and waste Thick outer covering of plant cells Structures in cells which contain chlorophyll Parts of Cells Cell Membrane Cytoplasm Endoplasmic Reticulum Mitochondria Nucleus Ribosomes Cell Wall Lysosome Chloroplasts Vacuole Match Function With Cell Parts

39 Identify Cell Parts

40 A – Cytoplasm B – Chloroplast C – Nuclear Membrane D – Nucleus E – Endoplasmic Reticulum F – Ribosomes G – Golgi Apparatus H – Vacuole I – Lysosome J – Cell Membrane K – Mitochondria L – Cell Wall Animal CellPlant Cell

41 Endoplasmic Reticulum Mitochondria Nucleus Chloroplast Golgi Apparatus Controls cell activities Tubes that transport Material through the cell Store and package Protein Release energy from food Produces food for the cell through photosynthesis Match Function With Cell Parts And Pictures

42 Endoplasmic Reticulum Mitochondria Nucleus Chloroplast Golgi Apparatus Controls cell activities Tubes that transport Material through the cell Store and package Protein Release energy from food Produces food for the cell through photosynthesis Match Function With Cell Parts And Pictures

43 NucleusLysosome Nucleolus ERChloroplast Ribosomes Golgi Apparatus Vacuole MitochondriaSugar Food Cytoplasm Cell Membrane Cell Function Skit


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