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An Interactive Lecture Guide to help you understand THE
An Interactive Lecture Guide to help you understand THE

... through (CO2, O2, and N2) • SMALL, UNCHARGED or POLAR molecules pass through as well (H2o, glycerol, ethanol) • LARGER, UNCHARGED or POLAR molecules have a harder time passing through (amino acids, glucose, nucleotides) • IONS can’t pass through (H+, Na+, K+,Ca+2, and Cl-), they need the help of TRA ...
Computational Systems Biology - Computational Science Laboratory
Computational Systems Biology - Computational Science Laboratory

... Alkylating agents - interfere with cell division and affect the cancer cells in all phases of their life cycle. They confuse the DNA by directly reacting with it. Antimetabolites - interfere with the cell's ability for normal metabolism. They either give the cells wrong information or block the form ...
Mr. Martin`s Chapter 30 PowerPoint
Mr. Martin`s Chapter 30 PowerPoint

... toward the stele through plasmodesmata 3. Most water, on the other hand, is carried between cells, through the cell walls 4. Therefore the endodermis and Casparian strip control the entry of water and solutes into the vascular cylinder (stele) *Because of root organization all water and solutes must ...
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Animations - Growth in Plants - teachers notes

...  Both organisms need to grow, to reach maturity so that they can reproduce. They both depend on an external source of raw materials to grow, and much growth is concerned with increasing their access to these raw materials. Their growth involves an increase in the number of cells, rather than the si ...
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... This section will start with the teacher using an interactive resource called inside a Cell from Learn Genetics at the University of Utah. It is suggested that the teacher explore the interactive resource before using it with students. After watching the video, students will discuss higher level and ...
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... The endoplasmic reticulum is like a red blood cell because the red blood cell carries proteins throughout the body like an endoplasmic reticulum carries proteins throughout the cell ...
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SNC1D0 Electric Circuits

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VACUOLES - Lincoln-Sudbury Regional High School
VACUOLES - Lincoln-Sudbury Regional High School

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... 1. A multicellular organism is a group of cells that live and work together in one organism. 2. There is differentiation and cell specialization. 3. Advantage of having cell specialization: A cell that only has to do one function can be much more efficient at that one job. 4. Disadvantage of cell sp ...
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... conditions in a changing environment. Individual cells, as well as organisms, must maintain homeostasis in order to live. • One way that a cell maintains homeostasis is by controlling the movement of substances across the cell membrane. ...
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... Reproduction in prokaryots is asexual meaning no genetic material is exchanged with another organism. Therefore the result of the reproduction is an exact duplicate, in terms of DNA, of the original, that is a clone. Reproduction is by binary fission. The cell wall pinches off near the middle of the ...
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Investigating solute transport in bone: implications on cell-to-cell signaling and

... Investigating solute transport in bone: implications on cell-to-cell signaling and drug delivery Recent experiments strongly suggest that osteocytes, the most numerous bone cells, play a more active role in bone adaptation and metabolism than previously thought. These multi-functioning cells form a ...
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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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