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Cell Structure and Function
Cell Structure and Function

... Other organelles present in nearly all eukaryotic cells:  1. Mitochondria – responsible for cells energy metabolism  2. Rough and smooth endoplasmic reticulum – network of membranes in which certain proteins and lipids are synthesized. ...
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... cell than in the solution, causing (water flows into the cell) (increases osmotic pressure, cells may burst). hypotonic ...
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... requires the use of 'carriers' (membrane proteins). In the example below, a legend molecule (e.g., acetylcholine) binds to the membrane protein. This causes a conformational change or, in other words, an 'opening' in the protein through which a substance (e.g., sodium ions) can pass. ...
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Prokaryote cells

... then transport the protein to the __________ ______________. Once inside one of the many flattened sacs of this organelle, the protein is ______________ further. It moves through the sacs and then eventually packaged into a ______________, which may fuse with the cell membrane and secrete the now fi ...
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Cell Parts and Organelles Flash Cards

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...  All cells come from pre-existing cells. Important organelles in a cell Nucleus: Contains the cell’s DNA. ‘Brain’ of the cell. Mitochondrion: Site of respiration. Provides the energy for the cell to function. Ribosomes: Site where proteins are made (including enzymes) Vacuole: Storage. Cytoplasm: W ...
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... Using the diagrams on pages174-181 of your textbook, you will create a postersized drawing of an animal or plant cell and label its organelles (see details below). Next to each label (organelle) you will provide a picture and your analogy to the cell part. You must explain how your analogy relates t ...
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Summary Peroxisome is a structure present in the all eukaryotic

... A small, spherical, membrane-bound organelle containing a fluid with dissolved molecules. In plant cells, the vacuole takes up a large amount of space, at times, it occupies more than 90% of the plant cell space. It is said that vacuoles are usually formed by the fusion of many membrane vesicles. Du ...
Cell Membranes and Signaling
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... into monomers and absorbed by the small intestines, into the blood and traveled all around the body to the CELLS! • Biomolecules must get into the cells for the cells to use them  Ex: Mitochondria need glucose, ribosomes need amino acids…  CELL MEMBRANE needs lipids, carbs and proteins These molec ...
Ch 6 A Tour of the Cell
Ch 6 A Tour of the Cell

... • at pore, membranes are fused • pore complex­lines pores  and regulates what goes in and  out (large molecules) • nuclear lamina­ net­like  protein filaments, keeps shape  of nucleus ...
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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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