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Standard-- Biology- 10CS-2 States of matter and their changes
Standard-- Biology- 10CS-2 States of matter and their changes

... endoplasmic reticulum
 mitochondrion
 golgi apparatus 3. Cell organelles are located within the ____ of the cell. 
 nucleus
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 transport materials
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File - Ms. Adam`s science site
File - Ms. Adam`s science site

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Lysosomal enzymes in the macronucleus of Tetrahymena
Lysosomal enzymes in the macronucleus of Tetrahymena

... corresponds to small cap-like deposits localized to the cortical zone of the condensed degenerating macronucleus. In Figure 6d, a conjugant pair is observed simultaneously with brightfield and fluorescence microscopy. Acid phosphatase deposits completely encircle the condensed nuclei. It is clear th ...
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Chapter 3 Extended Chapter Outline
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No Slide Title - Suffolk County Community College
No Slide Title - Suffolk County Community College

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cell model project - Loudoun County Public Schools
cell model project - Loudoun County Public Schools

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Functional consequences of the human DMT1 (SLC11A2) mutation
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... the internalized radioactivity evaluated. The capacity of WT DMT1 and E399D DMT1 to transport iron was comparable (Figure 1D). In contrast, DEL DMT1–transfected CHO cells exhibited no increase in iron uptake, suggesting that deletion of exon 12 abolishes the iron transport function of DMT1. The abse ...
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Neural Physiology - Delta State University
Neural Physiology - Delta State University

... • Saltatory conduction from one node of Ranvier to the next ...
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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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