• 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
The role of desmoplakin during epidermal development
The role of desmoplakin during epidermal development

... desmosomal defects have a variety of skin related disorders (Whittock 2002, et al) that are consistent with my expectations. Alternatively, epidermal differentiation may not require desmosome function at all. If this is the case, I predict that I will see cells that have differentiated correctly. Th ...
Cellular Transport Webquest
Cellular Transport Webquest

... 25. Observe “Osmosis and Diffusion”. Why does the balloon on the left get larger? ...
Evidence for a non-replicative intracellular stage of
Evidence for a non-replicative intracellular stage of

... source of LOS heterogeneity is the regulation by phase variation of genes encoding enzymes responsible for LOS modifications with di-galactose, sialic acid and phosphocholine (PCho) (Gilsdorf et al., 2004; Power et al., 2009). PCho has been shown to be involved in different aspects of NTHi pathogeni ...
Ph16 lecture 1
Ph16 lecture 1

... membrane as easily as smaller molecules. For small molecules, D is inversely proportional to the square root of the MW for small molecules, the cube root for macromolecules. 3. Temperature - higher temperature leads to greater thermal motion of molecules. 4. Presence of channels - charged ions such ...
Domains of Life - Spring Branch ISD
Domains of Life - Spring Branch ISD

... Eukaryota are eukaryotic organisms that can be either unicellular or multicellular. Eukaryota cells are larger and more complex than both bacteria and archaea cells. Almost all large organisms, including humans, belong in this domain. They are more closely related to archaea than bacteria. ...
Cancer
Cancer

... Esther Chung Ivy Law ...
Supplementary Information
Supplementary Information

... with different doses of either puromycin or MN. We observed that after treatment with low doses of puromycin for a week, not all cells displayed detectable GFP fluorescence. This indicated that very low levels of PGN expression are not sufficient to confer detectable fluorescence, but sufficient to ...
Immunocytochemical Localization of the
Immunocytochemical Localization of the

... \nn lii'iniial procedure for human glucocorticoid receptor (GR) in order to assess its level and subcellular distribution in a well- tion, recent flow cytometry data using monoclonal antibodies studied system of childhood lymphoblastic leukemia cells (GEM), »here to the human glucocorticoid recepto ...
Complementary action of the PGC-1 coactivators in mitochondrial
Complementary action of the PGC-1 coactivators in mitochondrial

... lines, regardless of PGC-1a and PGC-1b expression. However, while induction of the UCP1 gene during differentiation was normal in cells lacking either PGC-1a or PGC-1b, expression of this gene was reduced by 90% during differentiation in cells with deficiency in both PGC-1a and b. Western blot analy ...
Programmed cell death in plant development
Programmed cell death in plant development

... Plants live very economically. When the cell wall itself is able to accomplish a specific function, the protoplast is eliminated. Sclerenchyma cells are dead because thick cell walls perform the mechanical function. Phellem, commonly known as cork, is constituted of characteristic cells with a thick ...
Local Type III Hypersensitivity Arthus reaction
Local Type III Hypersensitivity Arthus reaction

... antibodies are administrated intradermally to an animal with a high level of circulating antigen ...
A scanning electron microscope study of the early
A scanning electron microscope study of the early

... SEM pictures of the AER show that the periderm cells become much less flattened than in the general ectoderm (Figs. 4, 5). Many of them, equally in both normal and taipicP limb-buds, become necrotic, with very electron-dense cytoplasm and large Jysosomes. These cells have been described by Jurand (1 ...
Origin and shaping of the laterality organ in zebrafish - MPI
Origin and shaping of the laterality organ in zebrafish - MPI

... DFC epithelialisation and transformation into KV To characterise the cellular events that transform the relatively unstructured DFC cluster into a highly organised vesicle after completion of embryonic epiboly, we made use of a transgenic fish line that strongly expresses GFP in DFCs via the sox17 p ...
PDF
PDF

... SEM pictures of the AER show that the periderm cells become much less flattened than in the general ectoderm (Figs. 4, 5). Many of them, equally in both normal and taipicP limb-buds, become necrotic, with very electron-dense cytoplasm and large Jysosomes. These cells have been described by Jurand (1 ...
Neurons - WordPress.com
Neurons - WordPress.com

... Neurons perform all of the communication, information processing, and control functions of the nervous system. Neuroglia outnumber neurons and have functions essential to preserving the physical and biochemical structure of neural tissue and the survival of neurons. ...
Mathematical Modelling of the Loss of Tissue Compression
Mathematical Modelling of the Loss of Tissue Compression

... basis of the development of avascular tumours. In particular, we study how an incorrect sensing of its compression state by a cell population can represent a clonal advantage and can generate hyperplasia and tumour growth with well known characteristics such as compression of the tissue, structural ...
Microinjected Fluorescent Phalloidin in Vivo
Microinjected Fluorescent Phalloidin in Vivo

... at subsequent stages, using an image-processingsystem that allows fast recording without light exposure damage. The main questions we posed were: (1) Can actin filaments be stretched by mitotic forces related to spindle microtubule/microfilament interactions, as suggested by our earlier studies? (2) ...
Cell Project
Cell Project

... project is due early (9/4/13 Wednesday). You must load and email me the photo before you eat your cake. I will send you a message that I received your picture. After I receive it, you can enjoy your project! If I do not receive the e-mail and you get rid of your project, you must turn in a new proj ...
Homeostasis & Transport
Homeostasis & Transport

... 3) Does the movement of molecules stop once equilibrium is reached? Explain. 4) What is the function of carrier proteins? 5) If the external solution is hypotonic compared to the cell, which direction will water move? ...
Biological Kingdoms
Biological Kingdoms

... Fungi are a large group of eukaryotic organisms that includes such organisms as yeasts, molds, and mushrooms. Many fungi are multicellular, but some are unicellular, such as yeast. Some differences between fungi and other eukaryotes are at the cellular level. Fungal cells have cell walls that conta ...
Chapter 4 – Cells and their Environment
Chapter 4 – Cells and their Environment

... – No changes in size – State of equilibrium is reached – Water diffuses in and out at the same rate ...
Chapter 7 Osmosis & Diffusion
Chapter 7 Osmosis & Diffusion

... from over-expanding. In plants the pressure exerted on the cell wall is called tugor pressure. •A protist like paramecium has contractile vacuoles that collect water flowing in and pump it out to prevent them from over-expanding. •Salt water fish pump salt out of their specialized gills so they do n ...
RaBa_presentation1
RaBa_presentation1

... Racing Bacterial Cells in Microfluidic Gradients in order to measure chemotactic efficiency of isogenic bacteria population in correlation to their morphology ...
prokaryotes
prokaryotes

... • RNA first genetic material and catalytic molecule • For example, ribozymes can make complementary copies of short stretches of RNA ...
3 AP Bio Plant Cell 2015
3 AP Bio Plant Cell 2015

... I mentioned chloroplasts earlier, however different plants have other “plastids” that contain other pigments such as xanthenes and carotenes (that are typically found in chromoplasts) and some vacuoles contain starch material (amyloplasts) that are clear. I would like to first show a somewhat simpli ...
< 1 ... 423 424 425 426 427 428 429 430 431 ... 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