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Plant Cells - Crossroads Academy
Plant Cells - Crossroads Academy

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Membrane Transport

... the membrane, such as glucose, diffuse across the membrane through selected protein channels. • It is dependent upon the concentration gradient because it does not require the cell to expend any energy. ...
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... 1. Cell theory – all organisms made of cells, all cells come from pre-existing cells, cells are the basic unit of function and structure. 2. Folded membranes are an advantage because they provide more surface area for materials to go in or out of the cell. 3. Electron microscopes have a much higher ...
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Eukaryotic Cells part II - Westerville City Schools

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... A plethora of vesicles An example is the lysosome, which is a vesicle that pinches off the Golgi complex of animal and some fungal cells. – They are organelles of intracellular digestion. • They contain an enzyme-rich fluid which aids in lipid, protein, carbohydrate, and nucleic acid breakdown. Pero ...
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McDougal Notes 1.2 Cell Structure for 8th period

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... The cell wall is only found in plants Chloroplasts are only found in plants There is a large central vacuole in plants. Animal cells have smaller vacuoles Some animal cell contain hemoglobin Animal cells have centrioles which are paired structures that help with cell division Animal cell store energ ...
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... Osmosis: Most biological membranes are selectively permeable; this means that some substances can pass through it and others ...
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8 Lipids, phospholipids and cell membranes

... inside the cell  allowing selected molecules to move in and out of the cell  isolating organelles from the rest of the cytoplasm, allowing cellular processes to occur separately.  a site for biochemical reactions  allowing a cell to change shape. 5 of 34 ...
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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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