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Characteristics Of Life - Fort Thomas Independent Schools
Characteristics Of Life - Fort Thomas Independent Schools

... Allows flood of Ca into the cytoplasm from the ER. ...
Development of Escherichia coli systemic infection model
Development of Escherichia coli systemic infection model

... drug and they are genetically identical to the drug-susceptible cell. Their existence has been shown in several in vitro studies, but their emergence during in vivo infections is less reported. Uropathogenic Escherichia coli (UPEC) is a main cause of urinary tract infections, but it is also able to ...
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... bumps that are called ___________, whose job it is to synthesize ____________ and pass it into the ________________. Those proteins go to various ____________ in the cell and other parts of the __________. The smooth ______________ ______________ has _______ ribosomes on its surface. Its job is to s ...
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reading quiz: ch. 13.3-13.4

... c) homologue chromosomes separate and move to opposite poles of the cell d) chromatids are pulled apart and moved to opposite ends of the cell e) none of the above 7. What occurs during MEIOSIS' metaphase I, that does NOT occur during MITOSIS' metaphase? a) synapsis b) tetrads line up down the middl ...
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... a model of a prokaryotic cell. Prokaryotes are tiny, single-celled organisms; they were the first forms of life, and they still exist today (bacteria are prokaryotes!). 2. See www.fieldmuseum.org/evolvingplanet/Precambrian_5.asp and view a model of a eukaryotic cell. Eukaryotic cells are different f ...
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... eukaryote. Give examples of each. Prokaryotes are cells with no true nucleus, no organelles, reproduce asexually, and are very small. An example is bacteria. Eukaryotes are cells with a true nucleus, organelles, can reproduce either asexually or sexually, and are fairly large. Examples are plants, a ...
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... Rough ER (endoplasmic reticulum) - worm-shaped gum candy Bumpy. Network of sacks in the cytoplasm that are covered with ribosomes. Transports material through the cell and produces proteins in sacks which are sent to the Golgi body or inserted into the cell membrane. Smooth ER (endoplasmic reticulum ...
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... the shoot apex, promotes the elongation of cells in stems.  IAA is is synthesized in the apical meristem of the shoot and is transported down the stem to stimulate growth. At very high concentrations, it can inhibit growth. Axillary buds are shoots that form at the junction, or node, of the stem an ...
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Multicellular Organisms Meeting Their Needs

... Like a chain, which is only as strong as its weakest link, an organism is only as strong as its weakest system. For example, the circulatory system depends on at least two other organ systems (respiratory and digestive systems) in order to do its job properly. If one of these organ systems is not do ...
Bacterial Senescence, Programmed Death, and Premeditated Sterility
Bacterial Senescence, Programmed Death, and Premeditated Sterility

... deterioration of proteins. Green ovals denote proteins that are activated or accumulated during starvation and whose activity is important to slow down starvation-induced loss of cultivability. The red oval (Acn) is aconitase, the absence of which has been shown to retard loss of cultivability in st ...
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6.5 Multicellular Organisms Meeting Their Needs

... Like a chain, which is only as strong as its weakest link, an organism is only as strong as its weakest system. For example, the circulatory system depends on at least two other organ systems (respiratory and digestive systems) in order to do its job properly. If one of these organ systems is not do ...
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Chapter 3 Part 2
Chapter 3 Part 2

... Figure 3-24 Stages of a Cell’s Life Cycle: Mitosis and Cytokinesis ...
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Amitosis

Amitosis (a- + mitosis) is absence of mitosis, the usual form of cell division in the cells of eukaryotes. There are several senses in which eukaryotic cells can be amitotic. One refers to capability for non-mitotic division and the other refers to lack of capability for division. In one sense of the word, which is now mostly obsolete, amitosis is cell division in eukaryotic cells that happens without the usual features of mitosis as seen on microscopy, namely, without nuclear envelope breakdown and without formation of mitotic spindle and condensed chromosomes as far as microscopy can detect. However, most examples of cell division formerly thought to belong to this supposedly ""non-mitotic"" class, such as the division of unicellular eukaryotes, are today recognized as belonging to a class of mitosis called closed mitosis. A spectrum of mitotic activity can be categorized as open, semi-closed, and closed mitosis, depending on the fate of the nuclear envelope. An exception is the division of ciliate macronucleus, which is not mitotic, and the reference to this process as amitosis may be the only legitimate use of the ""non-mitotic division"" sense of the term today. In animals and plants which normally have open mitosis, the microscopic picture described in the 19th century as amitosis most likely corresponded to apoptosis, a process of programmed cell death associated with fragmentation of the nucleus and cytoplasm. Relatedly, even in the late 19th century cytologists mentioned that in larger life forms, amitosis is a ""forerunner of degeneration"".Another sense of amitotic refers to cells of certain tissues that are usually no longer capable of mitosis once the organism has matured into adulthood. In humans this is true of various muscle and nerve tissue types; if the existing ones are damaged, they cannot be replaced with new ones of equal capability. For example, cardiac muscle destroyed by heart attack and nerves destroyed by piercing trauma usually cannot regenerate. In contrast, skin cells are capable of mitosis throughout adulthood; old skin cells that die and slough off are replaced with new ones. Human liver tissue also has a sort of dormant regenerative ability; it is usually not needed or expressed but can be elicited if needed.
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