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Biology For Dummies, 2nd Edition - The Official Site
Biology For Dummies, 2nd Edition - The Official Site

... • Identify and dissect the many structures and functions of plants and animals • Grasp the latest discoveries in evolutionary, reproductive, and ...
Ancient bacteria–amoeba relationships and pathogenic animal
Ancient bacteria–amoeba relationships and pathogenic animal

... Bacteria can exploit this amoeba [29,30]. Some bacteria can also remain inside the spores through the social cycle. Burkhoderia near fungorum is one such bacterium (Fig 1B). In fact, this and other strains of Burkholderia so change the phagosome machinery that D. discoideum infected with them can al ...
View Full Text-PDF
View Full Text-PDF

... species found in tropical Africa have medicinal virtues (Millogo et al., 2005). Medicinal and aromatic plants are widely used as medicine and constitute a major source of natural organic compounds (Seenivasan et al., 2006). Research data has demonstrated that the extracts exhibit various biological ...
H ydrop hobicity-hydrop hilicity of staphylococci
H ydrop hobicity-hydrop hilicity of staphylococci

... been studied by a technique involving partitioning of the cells between aqueous and hydrocarbon phases. S. aureus was typically hydrophobic, and to a greater degree in stationary- than in exponential-phase cultures. Mutants that lacked teichoic acid, protein A or coagulase production were hydrophobi ...
Conserved mechanisms of Ras regulation of evolutionary
Conserved mechanisms of Ras regulation of evolutionary

... and eucaryotic factors, such as E. coli CAP, heat shock factor and HNF-3g (Donaldson et al., 1994; Donaldson et al., 1996; Liang et al., 1994a), indicating that the roots of the ets gene family go very far back in evolution. However, the ets domain-DNA complex has distinct features, such as the way ...
to the marking scheme for all papers
to the marking scheme for all papers

... prokaryotes (some) are in animal cells; Ribosomes are {larger/80S} in animal cells than prokaryotes / 70S; must be comparative Question 1 Total ...
Calcium homeostasis in plants
Calcium homeostasis in plants

... the PM, which is tightly appressed to the cell wall. These walls, especially in young tissue, are porous, allowing for diffusion of water, nutrients and molecules as large as 40 kDa (Carpita, 1982). Within the matrix of the wall, and ...
- Wiley Online Library
- Wiley Online Library

... genic mutations that suppress the loss function of SEPH. According to a previous finding that septation defects of the SEPH mutant at a restrictive temperature of 42°C resulted in failed conidiation, the abolished conidiation will be linked to septation defects (Liu and Morris, 2000; Liu et al., 200 ...
Transcriptional Regulation of the Human Toll
Transcriptional Regulation of the Human Toll

PDF hosted at the Radboud Repository of the Radboud University
PDF hosted at the Radboud Repository of the Radboud University

... large bowel by anaerobic bacteria. It has been shown that these compounds can have tumour-promoting capacities in animal experiments. In epidemiological studies, colonic cancer risk is related to the faecal bile acid concentration. In serum and bile of patients with colonic adenomas, more deoxycholi ...
DNA double-strand break repair by homologous recombination
DNA double-strand break repair by homologous recombination

... mutations in the RAD50 gene have been linked to genetic diseases in humans so far, RAD50S /S mice (for details, see text below) have been shown to be predisposed to cancer [97]. For the clinical characteristics of NBS, ATLD, and AT, the reader is referred to several comprehensive reviews [98–102]. A ...
Par3/Baz levels control epithelial folding at actomyosin
Par3/Baz levels control epithelial folding at actomyosin

... Simoes Sde et al., 2010; Levayer et al., 2011). We had shown previously that F-actin and two reporters for Myosin II, MHC-GFP and MRLC-GFP, are enriched at PSBs at stage 10 (Monier et al., 2010). By quantifying the enrichment along the PSBs relative to control columns of DV-oriented junctions, we no ...
Glutamate Controls the Induction of GABA
Glutamate Controls the Induction of GABA

... GABA-mediated giant depolarizing potentials through AMPA receptors in neonatal rat hippocampal slices. J. Neurophysiol. 81: 2095–2102, 1999. Giant depolarizing potentials (GDPs) are generated by the interplay of the depolarizing action of GABA and glutamate. In this study, single and dual whole cell ...
Gene Regulatory Potential of 1α,25-Dihydroxyvitamin D3
Gene Regulatory Potential of 1α,25-Dihydroxyvitamin D3

... DNA binding sites (VDREs). Ligand-mediated conformational changes of the VDR are the core of the molecular switch of nuclear 1a,25(OH)2D3 signalling. Studying the interaction of 1a,25(OH)2D3 analogues with this molecular switch should allow the characterization of their potential selective biologica ...
Morphogenesis of complex plant cell shapes: the mechanical role of
Morphogenesis of complex plant cell shapes: the mechanical role of

... removed the pectic outer layer by treating chemically-fixed tubes with pectinase. Prior to enzyme treatment, the surface of the pollen tube appeared to be relatively uniformly patterned with small wrinkles in ...
A Lectin with Highly Potent Inhibitory Activity toward Breast
A Lectin with Highly Potent Inhibitory Activity toward Breast

... them exert immuno-modulatory activities [11,12], while others elicit anti-tumor, anti-bacterial, anti-fungal, anti-viral and antiinsect effects [13,14]. The physiological functions and mechanisms of various animal lectins have been studied precisely [15–18]. However, those of plant lectins have not ...
Redox regulation of cysteine
Redox regulation of cysteine

... Although the oxidants discussed subsequently are able to modify other AA, resulting in the modification of enzymatic function, this discussion is focused on those aspects that involve cysteines. Three major subdivisions of oxidizing species can modify cysteines: reactive oxygen, nitrogen, and sulfur ...
Biogenesis and origin of thylakoid membranes
Biogenesis and origin of thylakoid membranes

... discussed. Thylakoids are the dominating structure inside fully mature chloroplasts. The formation and alteration of the thylakoid membrane structure and composition are closely connected to the development of the chloroplasts from simple, undi¡erentiated proplastids. These are small round shaped or ...
PDF-document - homepage.ruhr-uni-bochum.de - Ruhr
PDF-document - homepage.ruhr-uni-bochum.de - Ruhr

... Although MTN neurons that project to IO are predominantly found in MTNd (Van der Togt et al., 1993), the functional significance of this segregation is not completely understood, apart from the presumed constitution of a reciprocal inhibitory connection between an upward directional selective neuron ...
Mucosal IL-10 and TGF-β play crucial roles in preventing LPS
Mucosal IL-10 and TGF-β play crucial roles in preventing LPS

... distribution analog to that previously reported in the mouse intes ...
Animal Evolution - Amazon Web Services
Animal Evolution - Amazon Web Services

... had evolved separately from unorganized organic substances, but a common ancestry was also considered a possibility (and was proposed soon after; see Haeckel 1870); this should not detract from the general validity of his definition of the term ‘monophyletic’, which is now used at all systematic lev ...
The anorexigenic cytokine ciliary neurotrophic factor stimulates
The anorexigenic cytokine ciliary neurotrophic factor stimulates

... CNTF and its receptor subunits are expressed in anorexigenic neurons of the ARC. We have demonstrated previously that CNTF was expressed in 90% of astrocytes and 75% of neurons in the rat ARC (57). Because CNTF administration decreases food intake, we addressed the possibility for the cytokine to be ...
PI3K and Rho GTPase activity are required for exogenous PIP3
PI3K and Rho GTPase activity are required for exogenous PIP3

... PI3K and probably mediated by a GDP/GTP exchange factor for Rac that is directly regulated by a heterotrimeric G protein. 4. Cortical actin causes further recruitment of PI3K to the plasma membrane via the N-terminal domain of PI3K, enhancing the Ras-dependent activation of PI3K. 5. Products of PI3K ...
NYS Lab: Diffusion Through a Membrane
NYS Lab: Diffusion Through a Membrane

... • exposure to a strongly hypotonic solution resulted in the cell's ability to quickly adjust to ...
Control of alternative splicing in immune responses: many
Control of alternative splicing in immune responses: many

... couples antigen recognition with intracellular signaling pathways. Thus, the level of CD3f expression determines the ability of a T cell to be activated. Strikingly, AS of exon 8 of CD3f is a primary control point of CD3f expression (10– 12). The 3′ UTR of the CD3f gene contains several AREs (AU-ric ...
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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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