Eukaryotic Cell Richardson P4
The Nucleus is the central part of a cell. This part contains most nutrients and contains the DNA of the cell. www.cellsalive.com
Ribososomes are RNA and protein. Both Prokaryotic and Eukaryotic cells have ribosomes. Ribsosomes move RNA around which provides amino acids to protien chains. www.cellsalive.com
This is a collective term for the cytosol plus the organelles suspended within the cytosol. www.cellsalive.com
Mitochondria provide the energy a cell needs to move, divide, produce secretory products, contract - in short, they are the power centers of the cell. They are about the size of bacteria but may have different shapes depending on the cell type. Mitochondria are membrane-bound organelles, and like the nucleus have a double membrane. The outer membrane is fairly smooth. But the inner membrane is highly convoluted, forming folds (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. The Wellcome Trust Centre for Mitochondrial Research provides further answers to "What Do Mitochondria Do"? www.cellsalive.com
The Golgi apparatus is a membrane-bound structure with a single membrane. It is actually a stack of membrane-bound vesicles that are important in packaging macromolecules for transport elsewhere in the cell. The stack of larger vesicles is surrounded by numerous smaller vesicles containing those packaged macromolecules. The enzymatic or hormonal contents of lysosomes, peroxisomes and secretory vesicles are packaged in membrane-bound vesicles at the periphery of the Golgi apparatus. www.cellsalive.com
This video explains the basis of cells. www.youtube.com This animation shows you the function of plant and animal cells for middle school and high school biology, including organelles like the nucleus, nucleolus, ...
The Nucleolus create Ribosomes which create proteins for the cell. The Nucleolus is the central part of the nucleus. www.cellsalive.com
Lysosomes help with digestion in the cell with hydrolytic enzymes. They are mostly found in animal cells and are in the vacuole of a cell. www.cellsalive.com
<b>Cell Membrane:</b> Every cell is enclosed in a membrane, a double layer of phospholipids (lipid bilayer). The exposed heads of the bilayer are "hydrophilic" (water loving), meaning that they are compatible with water both within the cytosol and outside of the cell. However, the hidden tails of the phosopholipids are "hydrophobic" (water fearing), so the cell membrane acts as a protective barrier to the uncontrolled flow of water. The membrane is made more complex by the presence of numerous proteins that are crucial to cell activity. These proteins include receptors for odors, tastes and hormones, as well as pores responsible for the controlled entry and exit of ions like sodium (Na+) potassium (K+), calcium (Ca++) and chloride (Cl-). www.cellsalive.com
Throughout the eukaryotic cell, especially those responsible for the production of hormones and other secretory products, is a vast network of membrane-bound vesicles and tubules called the endoplasmic reticulum, or ER for short. The ER is a continuation of the outer nuclear membrane and its varied functions suggest the complexity of the eukaryotic cell.The smooth endoplasmic reticulum is so named because it appears smooth by electron microscopy. Smooth ER plays different functions depending on the specific cell type including lipid and steroid hormone synthesis, breakdown of lipid-soluble toxins in liver cells, and control of calcium release in muscle cell contraction. www.cellsalive.com
(animal cells only): Each centriole is a ring of nine groups of fused microtubules. There are three microtubules in each group. Microtubules (and centrioles) are part of the cytoskeleton. In the complete animal cell centrosome, the two centrioles are arranged such that one is perpendicular to the other. www.cellsalive.com
This is a little fun animation sequence where you can both learn about an animal cell and a plant cell www.cellsalive.com
Rough endoplasmic reticulum appears "pebbled" by electron microscopy due to the presence of numerous ribosomes on its surface. Proteins synthesized on these ribosomes collect in the endoplasmic reticulum for transport throughout the cell. www.cellsalive.com
Free Ribosomes are Ribosomes floating free in the cytoplasm of the cell.
The Nuclear Envelope of a nucleus of a cell acts as a protective shell which allows molecules in and out with its many pores, called nuclear pores. hyperphysics.phy-astr.gsu.edu Cell Nucleus and Nuclear Envelope
The Chromatin is inside the nuclear envelope and is very colorful when used in experiments.It controls the DNA and the RNA of the cell and controls the the organelles floating in the cytoplasm hyperphysics.phy-astr.gsu.edu Cell Nucleus and Nuclear Envelope
The nuclear pore is a protein-lined channel in the nuclear envelope that regulates the transportation of molecules between the nucleus and the cytoplasm. In eukaryotic cells, the nucleus is separated from the cytoplasm and surrounded by a nuclear envelope. This envelope safeguards the DNA contained in the nucleus. In spite of this barrier, there is still communication between the nucleus and the cytoplasm. This communication is regulated by the nuclear pores. www.nature.com The nuclear pore is a protein-lined channel in the nuclear envelope that regulates the transportation of molecules between the nucleus and the cytoplasm
Every cell has a plasma membrane. This membrane protects the cell from outside minerals and controls what goes in and out of the cell.
Lysosome Picture www.biology4kids.com
Ribsosomes Picture envorganelles.wikispaces.com
The Nucleus Picture micro.magnet.fsu.edu
Another video that helps explain eukaryotic cells. www.youtube.com Hank tells us about the city of Eukaryopolis - the animal cell that is responsible for all the cool things that happen in our bodies. Crash Course Biology is...

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