• 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
Yeast as a Model Organism to Study Transport and
Yeast as a Model Organism to Study Transport and

... conditions. The ZrSod2-22p of the osmotolerant yeast Z. rouxii had the highest transport capacity for lithium and sodium but, similarly as the S. pombe sod2p, it did not recognize K+ and Rb+ as substrates. The S. cerevisiae Nha1p and C. albicans Cnh1p had a broad substrate specificity for at least f ...
Nonlysosomal Vesicles (Acidosomes) Are Involved
Nonlysosomal Vesicles (Acidosomes) Are Involved

... (1) to follow the time course of the pH changes in phagosomes (2-5) and endosomes ( l, 4, 6-8) of various cells suggest that the pH of a vesicle or vacuole that derives from the cell surface often becomes acid before such an organelle fuses with lysosomes. Thus the mechanism for the initial acidific ...
OGT Practice Life Science
OGT Practice Life Science

... B. ATP. C. DNA. D. RNA. Question 12 Aristotle was the first person to classify living organisms and did so using a two-kingdom system involving a plant group and an animal group. The system used today is much more useful to scientists because the two-kingdom system did not A. recognize the similarit ...
vilnius university
vilnius university

...  to assess apoptotic response of myogenic stem cells after exposure to cardiotoxic/genotoxic agents;  to determine the activation characteristics of MAPKs and PI3K/Akt kinases after cardiotoxic treatment;  to ascertain the role of individual MAPKs and Akt kinase in myogenic cell survival/death re ...
Sponges are sessile, feed by phagocytosis, and reproduce sexually
Sponges are sessile, feed by phagocytosis, and reproduce sexually

... Sponges reproduce by sexual, as well as, asexual methods. The typical means of asexual reproduction is either fragmentation (where a piece of the sponge breaks off, settles on a new substrate, and develops into a new individual) or budding (a genetically­identical outgrowth from the parent eventuall ...
The human apyrase-like protein LALP70 is lysosomal
The human apyrase-like protein LALP70 is lysosomal

... autofluorescent substance monodansylcadaverine (MDC; Biederbick et al., 1995), due to an interaction of MDC with the highly concentrated lipids in these organelles (A. Niemann et al., unpublished). Studies on the structure, function and turnover of autophagic vacuoles in higher eukaryotic cells have ...
Oscillatory Dynamics for Active Membranes Coupled by
Oscillatory Dynamics for Active Membranes Coupled by

... In the limit of large bulk-diffusivity, i.e. in a well-mixed system, can the PDE-ODE system be reduced to a finite dimensional dynamical system with global coupling? Can we exhibit quorum sensing behavior whereby a collective oscillation is triggered only if the number of cells exceeds a threshold? ...
Clonal Development is Evolutionarily Superior to Aggregation in
Clonal Development is Evolutionarily Superior to Aggregation in

... has occurred through several key steps in which formerly autonomous organisms evolve to become integral parts of a larger, higher-level organism. Maynard-Smith and Szathmáry termed these the major transitions in evolution1, and a profound example of this is the transition from uni- to multi-cellular ...
FYVE-dependent endosomal targeting of an arrestin-related
FYVE-dependent endosomal targeting of an arrestin-related

... In this report, we chose to focus on the protein AdcA from D. discoideum (Figure 1A–B). Arrestin-domain containing proteins extended with a FYVE domain were also found in D. purpureum, Polysphondylium pallidum, Entamoeba histolytica and E. dispar, other members of the Conosea group within the Amoebo ...
Slides - Evidence
Slides - Evidence

... A BRIEF HISTORY OF NEUROGENESIS RESEARCH ...
3D Animal Cell Cake Instructions
3D Animal Cell Cake Instructions

... need to blend the cake mix with three eggs, 1/3 cup of vegetable oil and 1 cup of water. FUN TIP: Break out the food coloring early on and dye your cake batter to match the color of your cytoplasm. Make sure you add the food coloring BEFORE pouring your batter into the round cake pan! Once your batt ...
Angiotensin AT1-Receptors Depolarize Neonatal Spinal
Angiotensin AT1-Receptors Depolarize Neonatal Spinal

... we used patch-clamp recordings in spinal cord slices to assess responses of neonatal rat (5–12 days) ventral horn neurons to bath-applied angiotensin II (ANG II; 1 ␮M). In 14/34 identified motoneurons tested under current clamp, ANG II induced a slowly rising and prolonged membrane depolarization, b ...
Cell Membrane - Worth County Schools
Cell Membrane - Worth County Schools

...  How do you build a barrier that keeps the watery contents of the cell separate from the watery environment?  FATS  ...
Six Kingdoms
Six Kingdoms

... shown that living prokaryotes are far more diverse than anyone had previously suspected. Details of the molecular biology of bacteria and archaea, especially studies of their RNA structure, show that they are as different from each other as either is from eukaryotes. This led to these three groups b ...
Section 1 Passive Transport Chapter 5 Diffusion Passive transport
Section 1 Passive Transport Chapter 5 Diffusion Passive transport

... • Passive transport involves the movement of molecules across the cell membrane without an input of energy by the cell. – The simplest type is known as diffusion. • Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration, driven by the molecules’ ...
lesson 1: plant cells
lesson 1: plant cells

... into starches or fats and is stored in the roots, seeds and fruits. ...
PHAGOCYTOSIS AND INTRACELLULAR KILLING OF SERUM
PHAGOCYTOSIS AND INTRACELLULAR KILLING OF SERUM

... interact with different classes of FcγR. This complexity makes it difficult to study the contribution of the various classes of FcγR to antimicrobial functions. To circumvent this difficulty, in the present study mouse 3T6 fibroblasts transfected with cDNA encoding for human FcγR type IIa (FcγRIIa-e ...
Gene expression analysis uncovers similarity and differences
Gene expression analysis uncovers similarity and differences

... MYC translocation, it has been argued that the 3 subtypes may have different pathogenetic mechanisms. In particular, because of the peculiar association patterns, a role for EBV has been proposed.15 However, there is still no satisfactory explanation of whether and how EBV participates in the pathog ...
BD Pharmingen™ Transcription Factor Buffer Set
BD Pharmingen™ Transcription Factor Buffer Set

... Likely no, this is the classic problem of understanding fixation and how it interacts with optics of the cytometer. Cells will appear “smaller” by FSC vs SSC, much like if they have been treated with BD FACS™ lysing solution. Voltages on the detectors are to be increased to gate properly. When compa ...
Newcastle disease virus may enter cells by caveolae
Newcastle disease virus may enter cells by caveolae

... is believed to occur by direct fusion at the plasma membrane through a pH-independent mechanism. In addition, NDV may enter host cells by an endocytic pathway. Treatment of cells with drugs that block caveolae-dependent endocytosis reduced NDV fusion and infectivity, the degree of inhibition being d ...
RNA binding proteins ZFP36L1 and ZFP36L2 promote cell quiescence
RNA binding proteins ZFP36L1 and ZFP36L2 promote cell quiescence

Cells Mediate Adhesion to Fibronectin, Laminin, and Collagen
Cells Mediate Adhesion to Fibronectin, Laminin, and Collagen

Isolation, Characterization, and Expression of cDNAs Encoding
Isolation, Characterization, and Expression of cDNAs Encoding

... of the human Man II gene in a human/hamster somatic cell hybrid panel . DNA isolated from a panel of 25 human/hamster hybrids (50 pg/ml, BIOS Corp .) was screened by PCR using primers with the following sequence : sense primer-GCTCGGATGCTACTAGA (3/17 mismatch with murine Man 11) ; antisense primer-T ...
Differentiation of Cardiac Myocytes after Mitogen Withdrawal
Differentiation of Cardiac Myocytes after Mitogen Withdrawal

... the mitogenic challenge, [3H]thymidine incorporation increased within 12 h and reached a peak at 21 h, after which cytokinesis occurred: the cell population increased 1.8-fold within 30 h. In contrast, after 7 d in differentiating medium, DNA synthesis became uncoupled from mitotic division: no incr ...
Cell-cycle regulation
Cell-cycle regulation

... The cdk-4 Cdk4/6 kinase and cyd-1 D-type cyclin genes are required for progression through G1 phase during larval development (Boxem and van den Heuvel, 2001; Park and Krause, 1999). CYD-1 and CDK-4 likely act in complex, as indicated by their direct interaction in vitro and close similarity in null ...
< 1 ... 301 302 303 304 305 306 307 308 309 ... 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