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Robert Hooke is one of the main contributors to the cell theory ~ Aidan Alston

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Antony van Leeuwenhoek: Discovery of Cells

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Antony van Leeuwenhoek: Discovery of Cells

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Antony van Leeuwenhoek is another one of the main contributors of the cell theory. He was the first to observe bacteria ~ Aidan Alston

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Cells are the building blocks of all living things-tyshawn

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The size of an organism is determined by the number of cells it has-tyshawn

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Cells are the tiniest structures that can be said to be alive ~Tracyre Davis

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When a cell grows bigger, the only thing actually “ growing” is the amount of cytoplasm or “ cell jelly” actually cause cancer-tyshawn

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Schleiden - All plants are made of cells

Schwann - All animals are made of cells

~ Aidan Alston

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Schleiden & Schwan (1830s): Discovery of Cells

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Schleiden & Schwan (1830s): Discovery of Cells

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botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory.~Tracyre Davis

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All living things are made of one or more cells

Unicellular - 1 cell

Multicellular - more than one cell

~ Aidan Alston

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The idea that living organisms could originate(proof into existence) from non-living materials-tyshawn

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Antony van leeuwenhoek: Discovery of Cells

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Antony van leeuwenhoek: Discovery of Cells

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First to observe live protists - from lakes, which he names “animalcules.” First to observe bacteria - sourced from the plaque on his teeth ~Tracyre Davis

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As the cell grows, it becomes less efficient at:

Responding to its environment transport nutrients, gases, waste in and out. -tyshawn

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all cells are the same size, there might be more depending on how big the object is

~ Aidan Alston

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Looks like "pasta" or "broken pencils" ~Tracyre

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A double-membraned rod-shaped organelle ~Tracyre

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structure: a double-membraned rod-shaped organelle

function: the powerhouse of the Cell

~ Aidan Alston

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Vesicle full of digestive enzymes ~Tracyre

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structure: mostly made of a double layer of phospholipids

function:

1. protection

2. transport

3. communication

~ Aidan Alston

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structure: small membranous sacs

function: act as delivery trucks to transport materials

~ Aidan Alston

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structure: two small subunits made of rRNA and protein come together to form all the "little dots"

function: synthesizes (makes) proteins

~ Aidan Alston

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a (mostly) hollow fatress with highly selectives nuclear pores within the nuclear membrane-tyshawn

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can fuse with the cell membrane to export materials-tyshawn

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cell membrane can "fold in" to bring material into the cell-tyshawn

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although internal, m-b organelles in eukaryotes increase the overall surface for chemical reactions and/or cell transport-tyshawn

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each organelle (little organ) performs a specific functions, which also increase overall efficiency-tyshawn

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a tough rigid layer around the cell composed of the polysaccharide cellulose-tyshawn

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double-membraned organelles that have what looks like "stacks of pancake"inside-tyshawn