• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
figure 26 - CARNES AP BIO
figure 26 - CARNES AP BIO

... • Other can also reproduce sexually or at least employ the sexual process of meiosis and syngamy – Syngamy is the process of cellular union during fertilization FIGURE 28.4 – The origin and early diversification of eukaryotes. Among the most fundamental questions in biology is how the complex eukary ...
Tissues Response to Injury
Tissues Response to Injury

... the whole cell, in terms of size, number, type and arrangement of cells in tissues, but occurring during the development of the embryo or foetus ...
Recent advances in understanding plant nuclear envelope proteins
Recent advances in understanding plant nuclear envelope proteins

... stunted growth and low fertility, while it has not been possible to isolate a null mutant lacking all CRWN genes (Wang et al., 2013). These results clearly indicate that CRWNs are indispensable for cell viability, similar to lamins being essential in vertebrate cells. ...
Jump-starting the immune system: prime–boosting - Direct-MS
Jump-starting the immune system: prime–boosting - Direct-MS

... contributing factor is the phenomenon of T-cell immunodominance [38,39]. T-cell responses to different antigens are highly competitive, resulting in a hierarchy of dominant and subdominant epitopes. A T-cell response to a dominant epitope in a pathogen will often suppress the development of a respon ...
Embryonic stem cell differentiation: emergence of a new era in
Embryonic stem cell differentiation: emergence of a new era in

... blood islands, known as primitive erythrocytes, are distinct from fetal and adult erythrocytes in that they are large, circulate in the bloodstream as nucleated cells for much of their life span, and contain an embryonic form of hemoglobin (Barker 1968; Brotherton et al. 1979; Russel 1979; Kingsley ...
HeLa cells
HeLa cells

development of a mediatorless microbial fuel
development of a mediatorless microbial fuel

... mediatorless MFC utilising E. coli as the biocatalyst is effective in generating electricity ...
Rapid movement of axonal neurofilaments interrupted by prolonged
Rapid movement of axonal neurofilaments interrupted by prolonged

... embryonic frog neurons growing on laminin substrates11,12, but Chang et al.13 have shown that this movement is probably attributable to stretching of the growing axon rather than bona fide slow axonal transport because the movement is dependent on the nature of the substratum and is not observed whe ...
Designer nucleic acids to probe and program the cell
Designer nucleic acids to probe and program the cell

... Figure 2. Schematic showing different functional nucleic acid motifs. Red stars and black circles represent reporter fluorophores. Aptamer: a DNA or RNA molecule that specifically binds a small molecule or biomolecule (green oval). Aptazyme: a DNA or RNA molecule that is comprised of an aptamer doma ...
antibacterials
antibacterials

... Bacteria have cell walls mainly composed by polysaccharides that protects their cell structure and inside components. These cell walls are strong due to the chemical cross-links. How does it work?: 1. Penicillins interfere with cell wall construction of bacteria. 2. The cross links are destroyed, he ...
Biology: Bachelor of Science (Prior to Fall 2015)
Biology: Bachelor of Science (Prior to Fall 2015)

... Core Conditions: Complete at least two additional courses from any of the four core areas. At least four of the six core area courses must be laboratory courses Complete at least two 200-level laboratory courses At least three of the six core area courses must be 300 level or higher. PLEASE NOTE:  ...
PDF - The Journal of Cell Biology
PDF - The Journal of Cell Biology

... those of other growth factors, with the characteristic arrangement of antiparallel β sheets and disulfide bridges (Fig. 1, A–D). The overhanging wings are out of phase by 90° in Drosophila versus mammalian ligands, possibly reflecting interactions with different receptor types (Fig.  1, B–D). The re ...
A Biological Overview of the Cell Cycle and its Response to Osmotic
A Biological Overview of the Cell Cycle and its Response to Osmotic

... S. cerevisiae. Since the cell cycle phases are interlinked, the effect of osmotic stress on the cell cycle cannot be predicted just by considering one single phase. We introduce a comprehensive mathematical model, which predicts how this elaborate system might work in the presence of osmotic stress. ...
Gene Therapy for Lung Cancer
Gene Therapy for Lung Cancer

... Erb B2: Aberrant expression of erb B2 (also called or neu), a 185-kd transmembrane protein kinase receptor with homology to the epidermal growth factor receptor, has been shown to contribute to malignant transformation and progression in a number of epithelialderived carcinomas, including breast, ov ...
Copyright Information of the Article Published Online
Copyright Information of the Article Published Online

... accompanied by the downregulation of Oct4[10]. Conversely, CD44+ gastric cancer cells showed the stem cell properties of self-renewal and the ability to form differentiated progeny[11,12]. CD44 is highly polymorphic, possesses a number of alternative splice variants, and undergoes extensive post-tra ...
Visualization of Intracellular Transport of Vesicular Stomatitis Virus
Visualization of Intracellular Transport of Vesicular Stomatitis Virus

... were seen to be closely associated with mitochondria. Treatment of cells with nocodazole or Colcemid, drugs known to inhibit MT polymerization, resulted in accumulation of the nucleocapsids around the nucleus and also led to inhibition of infectious-virus production. These findings are compatible wi ...
Neurogenic genes control gene expression at the transcriptional
Neurogenic genes control gene expression at the transcriptional

... As in the wild type, the pattern of L’sc protein accumulation closely follows that of transcription in neurogenic mutants. Mutant proneural clusters look essentially normal, as shown by double staining for L’sc and Ac. In the wild-type control (Fig. 3A), S1 clusters occupy the entire ventral-most re ...
FEMS Microbiology Ecology 33
FEMS Microbiology Ecology 33

... the length of the recovery period depending on the starvation medium. Starvation affected the sugar affinity of the A. lipoferum cell surface mainly towards p-aminophenyl-K-D-mannopyranoside, to a lesser extent to glucose, but not to other monosaccharides tested. Starvation changed the concentration ...
New Views on the Plant Cytoskeleton
New Views on the Plant Cytoskeleton

... and new and improved imaging technologies, is changing our views on the form, the function, and the regulation of the plant cytoskeleton. Ever since their discovery in plant cells in the 1960s and 1970s, the function of microtubules and actin microfilaments has been analyzed largely by pharmacologic ...
The cortical cytoskeletal network and cell-wall
The cortical cytoskeletal network and cell-wall

... cell cortex (Van Damme, 2009; Muller, 2012). If the PPB is altered through pharmacological or genetic means, subsequent division processes are significantly altered, which in turn lead to profound changes in thallus morphogenesis (Azimzadeh et al., 2008; Wright et al., 2009; Spinner et al., 2010). T ...


... then transported to the proteasome, a large multisubunit protease complex, where they are degraded. Numerous cellular processes regulated by ubiquitin-mediated proteolysis include the cell cycle, DNA repair and transcription, protein quality control and the immune response. Defects in this proteolys ...
Cell Structure
Cell Structure

... Copyright © 2004 Pearson Education, Inc. publishing as Benjamin Cummings ...
ATP1A1-Mediated Src Signaling Inhibits Coronavirus Entry into Host
ATP1A1-Mediated Src Signaling Inhibits Coronavirus Entry into Host

Plant Cell Tissue and Organ Culture Biotechnology and Its
Plant Cell Tissue and Organ Culture Biotechnology and Its

... aims to provide a brief overview of the role of plant cell tissue and organ biotechnology in the field of the conservation and improvement of Medicinal and Aromatic Plants (MAPs). Several textbooks and review articles have been described this topic more comprehensively than is possible in this edito ...
Whole mount in situ hybridization shows Endo 16
Whole mount in situ hybridization shows Endo 16

... uniformly distributed throughout the cytoplasm of the vegetal plate cells. Fig. 1A,B shows clearly that Endo 16 message is restricted to a ring of approximately 28 cells in 20 h embryos. The absence of staining in the center of the vegetal plate territory shows that the skeletogenic territory in the ...
< 1 ... 209 210 211 212 213 214 215 216 217 ... 1231 >

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.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report