• 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
ultra hematinic - Evolving Nutrition
ultra hematinic - Evolving Nutrition

... Ultra Hematinic provides a comprehensive blend of nutrients involved in the healthy replication and maintenance of red blood cells (RBCs). Healthy circulating levels of RBCs are essential for the delivery of oxygen and nutrients to the body’s tissues. Iron (Glycinate): is the central component of he ...
Ecto-enzymes ofmammary gland and its tumours
Ecto-enzymes ofmammary gland and its tumours

... results indicate the external membrane location of the enzyme. (1) Externally added ATP is hydrolysed by cell populations containing no more than 5% non-viable cells, as measured by Trypan Blue exclusion. This evidence does not rule out the possibility of transient or localized ATP uptake by the cel ...
Chapter 7 III. Cell Boundaries
Chapter 7 III. Cell Boundaries

... Endocytosis and Exocytosis ...
AP Biology - gwbiology
AP Biology - gwbiology

... 1. What does selective permeability mean and why is that important to cells? Selective permeability means that the plasma membrane allows some substances to cross into or out of the cell through the membrane more easily than others. This is important because it allows the cell to regulate transport ...
www.ourpgs.com
www.ourpgs.com

... Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included ...
PDF file - School of Mathematics and Statistics
PDF file - School of Mathematics and Statistics

... The past two decades have witnessed enormous advances in our understanding of the molecular basis of cell structure and function. All scientists recognize the spectacular success of the human genome project and the consequent burgeoning interest in the related field of proteomics. Biochemists and ce ...
Microscopes as Windows on the World of Cells
Microscopes as Windows on the World of Cells

... • The nucleus is separated from the cytoplasm by a double membrane called the nuclear envelope. • Pores in the envelope allow materials to move between the nucleus and cytoplasm. • The nucleus contains a nucleolus where ribosomes are made. ...
CONNECTIVE TISSUE I
CONNECTIVE TISSUE I

... SLIDE 18 – UMBILICAL CORD - You are looking for Wharton’s Jelly, so find the tissue with 3 vessels in it (hold on some white paper) and that will be the umbilical cord. The other stuff is placenta. The mucous connective tissue is the jelly, surrounding the vessels. You should see some fibroblast. Wh ...
Slide 1
Slide 1

... Look at all of the cross-hatching brown-black fibers between the cell bodies. This is the “neuropil,” all of the axons of the gray matter connecting cells. ...
A. Movement of substances across the cell membrane
A. Movement of substances across the cell membrane

... F. Ribosomes -pebble shaped found on ER, location of protein production for use by the cell G. Cytoskeleton - provides structure for the cell 1. Microtubules - long hollow tubes that provide support for the cell; make up the core of flagella and cilia 2. Microfilaments - thin stringy fibers that pro ...
Platelet releasate increases the proliferation and
Platelet releasate increases the proliferation and

... Abstract: Concentrated platelets and their products are currently being used as a clinical tool to accelerate endosseous wound healing. However, there is little understanding regarding the actions of platelets and platelet-released products on osteogenic cells. We show, herein, that releasate from t ...
histology06
histology06

... Look at all of the cross-hatching brown-black fibers between the cell bodies. This is the “neuropil,” all of the axons of the gray matter connecting cells. ...
Lesson Overview
Lesson Overview

... Cell Organization The eukaryotic cell has two major parts: the nucleus and the cytoplasm. cytoplasm - fluid portion of the cell outside the nucleus. -Prokaryotic cells have cytoplasm too. Eukaryotic cells contain many organelles - membrane bound structures that perform specialized tasks. ...
Blog resource: http://tinyurl
Blog resource: http://tinyurl

... 14. A diploid cell carries genes A and B. There are dominant and recessive alleles for these genes. The cell is heterozygous for both genes. a. What combination of gametes could be produced if there was no crossing over?  AB or ____ ...
Chapter 6 Vocabulary - Plain Local Schools
Chapter 6 Vocabulary - Plain Local Schools

Regulation of Gene Expression
Regulation of Gene Expression

... control or regulate the synthesis of proteins from information encoded in their DNA. The process of turning on a gene to produce RNA and protein is called gene expression. Whether in a simple unicellular organism or a complex multi-cellular organism, each cell controls when and how its genes are exp ...
Through the microscope - NSW Department of Education
Through the microscope - NSW Department of Education

... keep their shape. Instead of bones, each cell has an outside coating of waxy, non-living material. This coating is made by the cytoplasm. The coating is called the cell wall and its function is to help plant cells keep their shape and so keep the whole plant upright when it is growing. ...
Labeled Schwann cell transplantation
Labeled Schwann cell transplantation

... A loss of PLAP1 SCs with time also followed transplantation into the acutely contused spinal cord (Fig. 1). At 24 h, the injury site contained few nuclei (both host and transplanted cells), although transplanted cells were present in small clumps around the injury margin (Fig. 1A, C,G). By 8 days, t ...
It is essential for students to know the three major tenets of the cell
It is essential for students to know the three major tenets of the cell

... many different types of cells, each with a different structure and corresponding function. ○ The fertilized egg gives rise to a large number of cells through cell division, but the process of cell division alone could only lead to increasing numbers of identical cells. ○ As cell division proceeds, t ...
Chapter 16: Cells - The Units of Life
Chapter 16: Cells - The Units of Life

... leaves are green because their cells contain so many chloroplasts. During plant photosynthesis, as shown in Figure 6, chloroplasts capture light energy and combine carbon dioxide from the air with water to make food. Energy is stored in food. As the plant needs energy, its mitochondria release the f ...
Microscope and Cell Lab Review
Microscope and Cell Lab Review

... Nucleus Cytoplasm ...
A Tour of the Cell
A Tour of the Cell

... provided by photosynthesis. • Photosynthesis is the conversion of light energy from the sun to the chemical energy of sugar and other organic molecules. • Chloroplasts are – unique to the photosynthetic cells of plants and algae and – the organelles that perform photosynthesis. © 2013 Pearson Educat ...
Vanilloid-mediated apoptosis in prostate cancer cells
Vanilloid-mediated apoptosis in prostate cancer cells

... In the different cells of the majority of tissues, a stimulation or the simple cellular activity determines a mobilization of the intracellular calcium [Ca2+]i in the citosol; afterwards, the plasmatic membrane channels for Ca2+ are opened and a store-operated release of Ca2+ from internal stores in ...
Groups
Groups

... • But if a group good (e.g., money) is also an individual good, the group must have mechanisms to limit cheating (free-ridership). • Group traits (although they are carried as rules by individuals) evolve because they benefit the group. Group selection (not just individual selection) is now accepted ...
Cell Membrane and Transport
Cell Membrane and Transport

... substance (the solvent) that contains a variety of substances, like salt and minerals (the solutes). Maintaining the concentration of solutes in the cytoplasm is critical to cell function-too much or too little of any component causes damage to the cell. This ideal balance of solutes within the cell ...
< 1 ... 477 478 479 480 481 482 483 484 485 ... 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