The Cell - Home | Shelly's Science Spot | Hackensack Middle School

The Cell - Home | Shelly's Science Spot | Hackensack Middle School

16 Pages · 2009 · 2.07 MB · English

• Principles of cell theory: 1. All living things are made of cells. Review of Cell Theory 2. Cells carry out the functions needed to support life.

The Cell - Home | Shelly's Science Spot | Hackensack Middle School free download


The Cell Review of Cell TheoryPro- and Eukaryotes Organelles  Principles of cell theory: 1. All living things are made of cells. Review of Cell Theory cells. 2. Cells carry out the functions needed to support life. 3. Cells come only from other living cells.  Contributing scientists – Anton von Leeuwenhoek : Invented the microscope and observed tiny living things in water – Robert Hooke : Coined the term “cell” after Review of Cell Theory – Robert Hooke : Coined the term “cell” after observing that cork consisted of tiny chambers – Francesco Redi : Proved that living things cannot be produced from non-living matter – Louis Pasteur : Discovered that cells come only from other living cells Two Types of Cells Prokaryotes  First cells to evolve  No nucleus Eukaryotes  Evolved from prokaryotes  No nucleus  Hereditary info is contained within cytoplasm  Ex: Archaea, Bacteria prokaryotes  Have a nucleus  Hereditary info is contained within the nucleus  Ex: Animals, Protists, Fungi, Plants And now for…. THE CELL ORGANELLES TINY MEMBRANE-BOUND STRUCTURES THAT PERFORM SPECIAL FUNCTIONS INSIDE THE CELL Cell Wall  Only found surrounding plant , fungal and bacterial cells  Made of cellulose  Is rigid, strong and stiff  Provides support and protection for the cell  It’s like the wall that surrounds a medieval city!  Surrounds all cells – In a plant cell, it lies beneath the cell wall – In animal cells, it is the outer boundary (made of Cell Membrane outer boundary (made of cholesterol)  Provides cell with – Protection – Control of movement of materials in/out of cell – Support – Maintains condition of cell  It’s like the border of a city!  Identified in 1833 by Robert Brown  Found in both plant and animal cells Nucleus and animal cells  Large, oval shape  Centrally located in cell  Controls cell activities  Contains genetic information (DNA)  It’s like the Mayor’s Office in City Hall !  Found in both plant and animal cells  Clear, thick, jelly-like material Cytoplasm  Located beneath cell membrane  Supports and protects cell organelles  It’s like the sidewalks that are found throughout a city!  Discovered in 1898 by Camillo Golgi  Found in both plant and animal cells  Looks like a flattened Golgi Apparatus  Looks like a flattened stack of membranes (or pancakes!)  Processes and packages molecules, like lipids and

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