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Plant/Animal Cell Info
Plant/Animal Cell Info

... lipids destined to leave the cell (extracellular) and for use within the cell (intracellular). The Golgi apparatus is abundant in secretory cells, such as cells of the pancreas. ...
Cell #5 - Dr. Annette M. Parrott
Cell #5 - Dr. Annette M. Parrott

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The History of the Cell Theory

... 1. Called fluid because… The phospholipids move within the membrane just as water molecules move with the currents in a lake! 2. Called mosaic because… proteins in the membrane move along the phospholipids like boats! These proteins create a mosaic or pattern on the membrane surface. 5. What is the ...
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Biology Unit Review Sheet #1 fall10
Biology Unit Review Sheet #1 fall10

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Prokaryotes vs. Eukaryotes
Prokaryotes vs. Eukaryotes

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Term1 Cell Analogy Portfolio Product
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Cell Foldable
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... Most species of organisms are composed of millions of cells. As previously mentioned there are unicellular life forms, such as the protozoa. Multicellular organisms include most plants and animals. Cells differ from one another in their appearance; but, all cells have similar internal parts known as ...
Differences between prokaryotic and Eukaryotic
Differences between prokaryotic and Eukaryotic

... cell wall. Functions: The wall protects the cell and helps maintain its shape. It prevents damage from outside and also bursting if internal pressure is high. In some prokaryotes, another layer, a sticky coat called a capsule surrounds the cell wall and further protects the cell surface. Capsules h ...
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VOCAB Chapter 7

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Bio102 Problems
Bio102 Problems

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Tour of the Cell - Explore Biology
Tour of the Cell - Explore Biology

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Ch 6 part 3 - Fort Thomas Independent Schools
Ch 6 part 3 - Fort Thomas Independent Schools

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Endomembrane system

The endomembrane system is composed of the different membranes that are suspended in the cytoplasm within a eukaryotic cell. These membranes divide the cell into functional and structural compartments, or organelles. In eukaryotes the organelles of the endomembrane system include: the nuclear membrane, the endoplasmic reticulum, the Golgi apparatus, lysosomes, vesicles, endosomes and the cell membrane. The system is defined more accurately as the set of membranes that form a single functional and developmental unit, either being connected directly, or exchanging material through vesicle transport. Importantly, the endomembrane system does not include the membranes of mitochondria or chloroplasts.The nuclear membrane contains two lipid bilayers that encompass the contents of the nucleus. The endoplasmic reticulum (ER) is a synthesis and transport organelle that branches into the cytoplasm in plant and animal cells. The Golgi apparatus is a series of multiple compartments where molecules are packaged for delivery to other cell components or for secretion from the cell. Vacuoles, which are found in both plant and animal cells (though much bigger in plant cells), are responsible for maintaining the shape and structure of the cell as well as storing waste products. A vesicle is a relatively small, membrane-enclosed sac that stores or transports substances. The cell membrane, is a protective barrier that regulates what enters and leaves the cell. There is also an organelle known as the Spitzenkörper that is only found in fungi, and is connected with hyphal tip growth.In prokaryotes endomembranes are rare, although in many photosynthetic bacteria the plasma membrane is highly folded and most of the cell cytoplasm is filled with layers of light-gathering membrane. These light-gathering membranes may even form enclosed structures called chlorosomes in green sulfur bacteria.The organelles of the endomembrane system are related through direct contact or by the transfer of membrane segments as vesicles. Despite these relationships, the various membranes are not identical in structure and function. The thickness, molecular composition, and metabolic behavior of a membrane are not fixed, they may be modified several times during the membrane's life. One unifying characteristic the membranes share is a lipid bilayer, with proteins attached to either side or traversing them.
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