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Power Point #3 - cell and organization of living systems
Power Point #3 - cell and organization of living systems

... • Ribosomes – where proteins are made • Endoplasmic reticulum – path along which molecules move from one part of the cell to another • Golgi apparatus – processes and packages substances produced by the cell ...
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Worksheet - Moore Public Schools
Worksheet - Moore Public Schools

... convoluted, forming 34. ____________________________ (cristae) when viewed in cross-section. The cristae greatly increase the inner membrane's surface area. It is on these cristae that food (sugar) is combined with oxygen to produce ATP - the primary energy source for the cell. Vacuole: A vacuole is ...
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The Cell Theory
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... • is the movement of molecules (solute or solvent) from a region of low concentration to a region of higher concentration through a semi-permeable membrane. • This process requires energy - ATP from respiration, which requires oxygen mitochondria. • The movement is against the concentration ...
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Recitation 16  - MIT OpenCourseWare
Recitation 16 - MIT OpenCourseWare

... Ions can move across membranes through pumps and channels. Integral membrane proteins like these cross the membrane via transmembrane domains. Pumps are ATPases that set up the concentration gradients of ions across cell membranes, such that K+ is high inside cells and other ions (such as Cl–, Na+, ...
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Cells - St. Ambrose School

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Unit1CellsVocabulary

... 7. Vesicle: bubble-like structures used for storing material. Like storage tanks. 8. Vacuole: vesicle that may contain enzymes, nutrients, water or wastes. Like a large storage tank. 9. Chloroplast: organelle where photosynthesis occurs. Contains chlorophyll. Like solar panels. 10. Lysosomes: organe ...
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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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