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... d. turgid 13. All of the following statements about membrane structure and function are true except a. Diffusion, osmosis, & facilitated diffusion do not require energy input from the cell b. Voltage across the membrane depends on an unequal distribution of ions across the plasma membrane c. Diffusi ...
Postdoc Opening
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... An opportunity for postdoctoral training in the Landick lab is available for highly motivated, new PhD scientists interesting in studying gene regulation in bacteria at multiple scales. We seek to connect the structure, function, and mechanism of RNA polymerase to genome-scale regulation in bacteria ...
From differential transcription of ribosomal proteins to differential
From differential transcription of ribosomal proteins to differential

... nutrient limitations used to control the cell growth rate. Furthermore, the number of the RP transcripts defying the expectations was even larger when I grew the yeast cells on ethanol carbon source (Slavov and Botstein, 2011). I also observed uncorrelated variability in RP transcripts across human ...
Document
Document

... ○ Retroviruses have a single-stranded RNA genomes of the plus sense, that means the RNA strand has the same base sequences as the mRNA (but unlike Baltimore class IV their plus- sense RNA genomes do not serve as mRNAs) ○ Encoding for the enzyme reverse transcriptase enters into the cell with the vir ...
DiffusionOsmosis reading
DiffusionOsmosis reading

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Transport across the cell membrane

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On line supplementary material

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S10 8.1 notes - Cochrane High School

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lecture notes-separation and purification-2-cell

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Specification of cell fates

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From indolence to persistence

... under conditions that are known to favour the formation of persisters and has previously been shown to affect membrane and oxidative stress and to increase antibiotic resistance, leading the authors to investigate whether it has a role in persister formation. By treating wild-type Escherichia coli c ...
ECTOPIC ROOT HAIR 3 in root patterning - Development
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... cell. A cell with a high level of WER relative to CPC will develop as an N cell while one with higher levels of CPC will develop as an H cell (Lee and Schiefelbein, 1999). It has been reported that erh3-1 mutants develop H cells in the N position indicating that ERH3 is required for a process during ...
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polar head

... function like tiny batteries with a positive and negative pole. • It is an important feature of a living cell’s normal function. ...
Loss of Growth Factor Dependence and Conversion of Transforming
Loss of Growth Factor Dependence and Conversion of Transforming

... RESULTS Reduced Serum Dependence of Metastatic Cells. The metastatic properties of lOT'/z cell lines which were transfected with T-24 H-ras, or were radiation-transformed have been described ( 17). A summary of the metastatic properties of these lines is presented in Table 1. It is important to note ...
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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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