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Lysosomal Heterogeneity in Exocrine Acinar Cells
Lysosomal Heterogeneity in Exocrine Acinar Cells

... are characterized by the presence of trimetaphosphatase activity (TMPase) (Figure 2). Nonspecific esterase and aryl sulfatase B activities have also been demonstrated in these lysosomes (6). TMPase, esterase, and aryl sulfatase activities can also be localized in lysosomes adjacent to the Golgi appa ...
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Cell Cycle-Dependent Targeting of a Kinesin at the Plasma

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... 3. Which type of cell does not store its DNA inside a nucleus? 4. What is the function of the ribosomes? 5. What is the function of the mitochondria? 6. Which 3 cell structures are found in all cell types? 7. What is the function of the cell wall? 8. Which structure stores cell sap in plants and yea ...
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... – rate of transmission is related to diameter of axon • thicker axon propagates signal faster • propagation rate in vertebrates is enhanced by glial cells – Schwann cells form discontinuous sheath • gaps = nodes of Ranvier • action potentials fire at nodes ...
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... • For Li ion battery, the battery is prepared at the specified shipping SOC per the manufacturer • Cell temperature and cell voltage are monitored • If heater is used to induce thermal runaway on the cell, a pre-test is run to determine what size heater is required to achieve a ramp rate of 5±2°C/mi ...
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... plasma membrane. Most cells have internal structures called organelles, which carry out specific functions for the cell. There are two types of cells - prokaryotic cells and eukaryotic cells. Prokaryotic cells: Prokaryotic cells are found in bacteria. Bacteria are about the simplest cells that exist ...
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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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