• 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
Extracellular Trapping of Soil Contaminants by Root Border Cells
Extracellular Trapping of Soil Contaminants by Root Border Cells

... 1. Root Border Cells Most plant species synthesize cell populations that are programmed to disperse into the external environment surrounding the root tip in response to free water or abrasion (Figure 1). For many years, these so-called “sloughed root cap cell” populations were thought to be a produ ...
Characterization of Cytosolic Cyclophilin from Guard Cells of Vicia
Characterization of Cytosolic Cyclophilin from Guard Cells of Vicia

... This property of CyP has led to the extensive study towards elucidating the cellular function of calcineurin in animals. CyPs have peptidyl-prolyl cis-trans isomerase activity that is inhibited by CsA and catalyze refolding of some denatured proteins indicating that CyPs are involved in protein fold ...
Cortical cell fate specification
Cortical cell fate specification

... during cortical development. One possibility is that a multipotent stem cell gives rise to neuronal restricted progenitors early in development by asymmetric division, and gives rise to glial restricted progenitors late in development. The switch in cell fate could be regulated by a cell autonomous ...
Membrane trafficking and osmotically induced
Membrane trafficking and osmotically induced

... cannot be the case, yet guard cells are remarkably robust to large volume changes caused by hyper- and hypo-osmotic treatments (Shope et al., 2003). These treatments produce changes in volume and surface area of up to 20% in <3 min, yet membrane integrity is rarely lost. Thus, membrane trafficking m ...
Animal Kingdom - lperleybiology112
Animal Kingdom - lperleybiology112

... Amebocytes are very effective feeders eating a wide size range of food particles and transport digested food throughout the sponge. ...
ANIMAL TISSUES
ANIMAL TISSUES

... Cells group together in the body to form tissues. A tissue is an ensemble of cells, not necessarily identical, but from the same origin, that together carry out a specific function. These are called tissues because of their identical functioning. There are only four types of tissues that are dispers ...
Plant Vegetative Development: From Seed and Embryo to Shoot
Plant Vegetative Development: From Seed and Embryo to Shoot

... After a cell divides, how are the identities of its daughters determined? Given the fact that plant cells cannot move, the accurate specification of cell fate is a critical component of plant development (Meyerowitz, 1997). Among the more pressing issues regarding fate determination in plants are th ...
01 Signal transduction
01 Signal transduction

... TLR activation however is a double edged sword. It is essential for provoking the innate immune response and enhancing the adaptive immunity against pathogens, but members of the TLR family are also involved in the pathogenesis of autoimmune, chronic inflammatory and infectious diseases. One of the ...
Nucleolus-like body of mouse oocytes contains lamin A and B and
Nucleolus-like body of mouse oocytes contains lamin A and B and

... Background: During the final stages of oocyte development, all chromosomes join in a limited nuclear volume for the final formation of a single complex chromatin structure – the karyosphere. In the majority of mammalian species, the chromosomes surround a round protein/fibrillar body known as the ce ...
Movement through the Cell Notes
Movement through the Cell Notes

... 4. Some large molecules must be absorbed into cells by a process called _________. 5. Think of exo- for ______. ...
the role of csf1 and zfpm1 in the preimplantation mouse
the role of csf1 and zfpm1 in the preimplantation mouse

... trophectoderm (TE) cells, segregated from the inner cell mass (ICM) cells, that in turn will either differentiate during the second cell fate decision into primitive endoderm (PrE) cells or remain as pluripotent epiblast (EPI) cells. These two important events are triggered by several factors includ ...
Tomato LeAGP-1 is a plasma membrane-bound
Tomato LeAGP-1 is a plasma membrane-bound

... Arabinogalactan-proteins (AGPs) are a class of highly glycosylated, hydroxyproline-rich glycoproteins that function in plant growth and development. Tomato LeAGP-1 represents a major AGP expressed in cultured cells and plants. Based on cDNA and amino acid sequence analyses along with carbohydrate an ...
Localization and characterization of major histocompatibility
Localization and characterization of major histocompatibility

... specific marker for rat dendritic cells, which are usually identified by their shape and high constitutive expression of class II antigen.8 Two antibodies are currently under study as dendritic cell markers, ie, OX62 and EDI 7, and these were included in this study. Sections of choroidal tissue that ...
Disulphide-bond formation in protein folding catalysed by highly
Disulphide-bond formation in protein folding catalysed by highly

The Role of Chromosome Domains in Shaping the
The Role of Chromosome Domains in Shaping the

... Hou et al., 2012; Sexton et al., 2012), and CTCF-mediated loops are implicated in maintenance of TAD structure (Giorgetti et al., 2014) and are thus believed to play a more fundamental architectural role in chromosome folding. Various case studies have implicated CTCF-mediated loops in insulator fun ...
Draft De Novo Transcriptome of the Rat Kangaroo Potorous
Draft De Novo Transcriptome of the Rat Kangaroo Potorous

... present for about 3/4 (7,435) of the most abundant 10,000 Unigenes but only about 1/4 (2,423) of the remaining 10,079 Unigenes (Fig 1C). This suggests that better sampling of robustly expressed genes leads to more complete transcript assembly and, therefore, more correct inference of open reading fr ...
PD-1 promotes immune exhaustion by inducing antiviral T cell
PD-1 promotes immune exhaustion by inducing antiviral T cell

... ments are stricken with a state of dysfunction commonly referred to as immune exhaustion (Wherry, 2011). The term exhaustion refers to a state of functional decline that occurs when lymphocytes are chronically exposed to an ant­i­ gen. During a persistent viral infection, this is operationally defin ...
Chapter 5:Histology - Palm Beach State College
Chapter 5:Histology - Palm Beach State College

... • Histology (microscopic anatomy)—the study of tissues and how they are arranged into organs ...
Suppression of Pyk2 Kinase and Cellular Activities by FIP200
Suppression of Pyk2 Kinase and Cellular Activities by FIP200

... Despite its structural similarity to FAK, Pyk2 appears to have different cellular roles than those of FAK. While FAK has been demonstrated to play an important role in integrin-mediated cell migration (Ilic et al., 1995; Cary et al., 1996, 1998; Gilmore and Romer, 1996), the expression of Pyk2 did n ...
SlidingFilamentModel2
SlidingFilamentModel2

... rapid, large-scale movement • Role of filamentous proteins understood as great and early breakthrough in cell/molecular biology— lots of protein available, (like Hemoglobin) I normally cover neurons and muscle together as part of unit on movement—see website ...
An Investigation of Endoplasmic Reticulum
An Investigation of Endoplasmic Reticulum

... The Endoplasmic Reticulum Associated protein Degradation (ERAD) pathway is a quality control mechanism common to all eukaryotic cells whereby ER-resident proteins recognize and eject misfolded proteins from the ER. The ERAD pathway is quite complex and requires the synchronization of many different ...
Short- and long-term effects of fatty acids on pancreatic alpha cell
Short- and long-term effects of fatty acids on pancreatic alpha cell

... ABSTRACT OF PhD DISSERTATION ...
The Role of Exopolysaccharides in Adhesion of
The Role of Exopolysaccharides in Adhesion of

... increased rapidly over the remaining 10 h. A slight non-specific adsorption of glucose from the culture medium occurred in the control. The accumulation of cells and associated polysaccharide can be seen in Fig. 2. After 9 h exposure (Fig. 2a), strain S61 formed a microbial aggregate surrounded by a ...
Biology of the Cell
Biology of the Cell

... bacteria have a thick, single-layered cell wall that retains a violet dye from the Gram stain procedure, causing the stained cells to appear purple under a microscope. More complex cell walls have evolved in other groups of bacteria. In them, the wall is multilayered and does not retain the purple d ...
abstract
abstract

... several attempts at preparing a cell made of 7 insulating sections separated by 6 ring-shaped metal electrodes. The parts were to be assembled by brazing. Since the attack of brazing material in alkali cells has been suspected many times17, we first exposed a sample of Ag-Cu brazing alloy18 to a 10 ...
< 1 ... 305 306 307 308 309 310 311 312 313 ... 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