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Bellwork Open your notebook to the bellwork section, What is the first thing that comes to mind when you think of the following terms: –Astronomy –Chemistry.

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Presentation on theme: "Bellwork Open your notebook to the bellwork section, What is the first thing that comes to mind when you think of the following terms: –Astronomy –Chemistry."— Presentation transcript:

1 Bellwork Open your notebook to the bellwork section, What is the first thing that comes to mind when you think of the following terms: –Astronomy –Chemistry –Physics –Biology copyright cmassengale1

2 CHAMPS C -Conversation- NO H- Help- Raise your hand A - Activity- We are taking notes M - No movement P - sit quietly, eyes on paper, teacher or board. Writing S - signal copyright cmassengale2

3 3 Study of Biology copyright cmassengale

4 4 What is Biology? Biology is the study of all living things. Bio-life Logy-study of Living things are called organisms Organisms include bacteria, protists, fungi, plants, & animals copyright cmassengale

5 5 All Organisms are made of Cells copyright cmassengale

6 6 Basic Structure of a Cell copyright cmassengale

7 7 Cell Size and Types Cells, the basic units of organisms, can only be observed under microscope Three Basic types of cells include: Animal CellPlant Cell Bacterial Cell copyright cmassengale

8 8 Prokaryote Vs. Eukaryote Prokaryote (Unicellular) – composed of one cell ex. bacteria Eukaryote (Multi cellular)- composed of many cells ex. Animal cell and plant cell copyright cmassengale

9 9 Two Main Types of Eukaryotic Cells Plant Cell Animal Cell copyright cmassengale

10 10 Organelles Very small (Microscopic) Perform various functions for a cell Found in the cytoplasm May or may not be membrane- bound copyright cmassengale

11 11 Animal Cell Organelles Nucleolus Nucleus Nuclear envelope Ribosome (attached) Ribosome (free) Cell Membrane Rough endoplasmic reticulum Golgi apparatus Mitochondrion Smooth endoplasmic reticulum Centrioles copyright cmassengale

12 12 Cell or Plasma Membrane (Honors) Outside of cell Inside of cell (cytoplasm) Cell membrane Proteins Protein channel Lipid bilayer Carbohydrate chains Surrounds outside of ALL cells Controls what enters or leaves the cell copyright cmassengale

13 13 Jelly-like substance enclosed by cell membrane Cytoplasm of a Cell cytoplasm copyright cmassengale

14 14 Controls the normal activities of the cell Contains the DNA in chromosomes Bounded by a nuclear envelope (membrane) with pores Usually the largest organelle The Control Organelle - Nucleus copyright cmassengale

15 15 Nuclear Envelope Double membrane surrounding nucleus Also called nuclear membrane Nuclear pores copyright cmassengale

16 16 Inside the Nucleus - The genetic material (DNA) is found copyright cmassengale

17 17 What Does DNA do? DNA is the hereditary material of the cell copyright cmassengale

18 18 Nucleolus Inside nucleusInside nucleus Directs the nucleus.Directs the nucleus. copyright cmassengale

19 19 Mitochondrion (plural = mitochondria) Powerhouse of the cell Generate cellular energy (ATP) More active cells like muscle cells have MORE mitochondria copyright cmassengale

20 20 Interesting Fact --- Mitochondria Come from cytoplasm in the EGG cell during fertilization Therefore … You inherit your mitochondria from your mother ! copyright cmassengale

21 21 Rough Endoplasmic Reticulum (Rough ER) Has ribosomes on its surface Makes membrane proteins and proteins for EXPORT out of cell copyright cmassengale

22 22 Smooth Endoplasmic Reticulum Smooth ER lacks ribosomes on its surface Is attached to the ends of rough ER Makes cell products that are USED INSIDE the cell copyright cmassengale

23 23 Ribosomes are made of proteins Can be attached to Rough ER OR Be free (unattached) in the cytoplasm copyright cmassengale

24 24 Golgi Bodies Look like a stack of pancakes Modify, sort, & package molecules from ER for storage OR transport out of cell copyright cmassengale

25 25 Golgi Animation Materials are transported from Rough ER to Golgi to the cell membrane by VESICLES copyright cmassengale

26 26 Lysosomes Contain digestive enzymesContain digestive enzymes digestrid of wastesdigest the food & get rid of wastes copyright cmassengale

27 27 Lysosome Digestion Cells take in food by phagocytosis copyright cmassengale

28 28 Cilia & Flagella- Locomotion (movement) Cilia are shorter and more numerous on cells Flagella are longer and fewer copyright cmassengale

29 29 Vacuoles Fluid filled sacks for storage copyright cmassengale

30 30 Cell Size Question: Are the cells in an elephant bigger, smaller, or about the same size as those in a mouse? copyright cmassengale

31 31 Cell Size Question: Are the cells in an elephant bigger, smaller, or about the same size as those in a mouse? About the same size, but … The elephant has MANY MORE cells than a mouse! copyright cmassengale


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