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Standard II test review Cells
Standard II test review Cells

... • What molecule usually helps it? (A word) • ATP • If there things are different on different sides of the membrane, it is usually due to . . . • Active transport • Example brown algae that contain 200 times more iodine than its surroundings. ...
Plant Cells Animal Cells Respiration Nucleus • contain chloroplasts
Plant Cells Animal Cells Respiration Nucleus • contain chloroplasts

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cells - (www.ramsey.k12.nj.us).
cells - (www.ramsey.k12.nj.us).

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... 6. In mitosis, the nucleus of the cell divides. There is still only one cell. The four phases of mitosis are ______________, _______________, ______________and ______________. 7. In cytokinesis, the cell divides into two cells, each with a nucleus. Cytokinesis begins from the outside in animal cells ...
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Plama Membrane

... 1. Provides a boundary between a cell and its environment 2. Controls the flow of material in and out of the cell A. The membrane is selectively permeable, which means that it lets some substances pass through, but not everything. (selective) 3. Maintains homeostasis: balance within the cells A. All ...
cells - Piscataway High School
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Chapter 7 - Leon County Schools

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Structure: strong, stiff, nonliving layer outside of the cell membrane

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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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