• 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
Chapter 3
Chapter 3

... content regulated by cell membrane organelles (little organs) – have characteristic shapes and functions; many are membrane bound and contain enzymes for specific reactions; numbers vary depending on cell type and function Cytoskeleton – network of protein filaments; act as structural framework and ...
a fresh approach to understanding human development using single
a fresh approach to understanding human development using single

... build an organ has been a long-standing fascination in developmental biology. Over the years, we have learned much with regard to the molecular events that instruct cell lineage, the specific growth factors that are required, and the morphological aspects that drive organ development. Most of this k ...
How is a cell like a blank project
How is a cell like a blank project

... storyboard, a fairy tale, or some other project that you devise. If you want to do something different, it must be approved before you start. You can work alone for this project, or with a partner. You must assume all responsibilities when working with a partner. You need to explain how cells work a ...
Living Things and Viruses Jeopardy
Living Things and Viruses Jeopardy

... What is the food source for fungi? ...
Epi-modif, glands
Epi-modif, glands

... Today: Epithelial Tissue Modifications of epithelium (Classification of epithelial membranes) ...
Cell
Cell

... Floating around in the cytoplasm are small structures called organelles. Like the organs in your own body, each one carries out a specific function necessary for the cell to survive. Imagine the cell as a miniature city. The organelles might represent companies, places or parts of the city because t ...
BIOLOGY 12 UNIT 1b – The Cell Membrane
BIOLOGY 12 UNIT 1b – The Cell Membrane

... a) Describe what will happen to the cells in each experiment when they are placed in the solutions in column B. Give reasons for your answers. 6 marks total: 1 mark for each “what” and 1 mark for each “why” Experiment 1:No change because the solution is isotonic to the cell. Experiment 2:Blood cell ...
Cell Structure 7.2
Cell Structure 7.2

...  Cytoskeleton: a network of protein filaments; it helps the cell maintain its shape and is involved in movement  Centrioles: organelles made from tuberlins; they help organize cell division in animal cells ...
Ppt
Ppt

... Charge inside the axon goes below -70mV. Caused by K+ leaving the cell and Na+ not able to enter the cell. Increase in negative charge since + ions are leaving axon with no + ions being able to enter the neuron. ...
Tissues of human body
Tissues of human body

...  Gland is specialized to produce secretion. Gland is formed of group of cells.  Gland can be divided either on the basis of mode of secretion or according to the type of secretion: ...
1 - Doctor Jade Main
1 - Doctor Jade Main

... 14. The following equation (G stands for glucose) G + G + G ---------> G-G-G + 2H2O, is an example of: a. ionic bond formation b. peptide bond formation c. dehydration synthesis d. hydrolysis 15. Which of the following statements is always true? All cells: a. have a cell membrane b. contain a nucle ...
Print › Biology Honors NC EOC Review | Quizlet
Print › Biology Honors NC EOC Review | Quizlet

... other organisms or substanes derived from other organisms. These use energy from the sun or from the oxidation of inorganic substances to make organic molecules from inorganic ones. ...
Lisa
Lisa

... There is only ONE NUCLEUS in a cell. (only Eukaryotic cells have a nucleus). It is very important because it contains the cell’s information – DNA. Usually, the nucleus is the largest organelle in the cell. It is surrounded by a double membrane – the nuclear envelope. Nuclear pores on the nuclear en ...
Biochemistry-introduction
Biochemistry-introduction

... • It is spherical to rod-shaped organelle with a double membrane. • The inner membrane is infolded many times, forming a series of projections (called cristae).The space between the two membranes is called “outer chamber” or “inter membrane space”. • It is filled, with a watery fluid and is 40-70Ǻ i ...
MULTIPLE CHOICE CELLS QUESTIONS
MULTIPLE CHOICE CELLS QUESTIONS

... Correct. But remember, plant cells have a central vacuole, while most animal cells have several smaller vacuole located throughout the cytoplasm. ...
Open Circulatory System
Open Circulatory System

... Open circulatory systems are less efficient because some blood can deliver nutrients and oxygen and then take a while to get back to the heart. Insects make up for this with their special respiration system (which we’ll get to later). ...
Cells - My CCSD
Cells - My CCSD

... B. Mitosis(division of the nucleus) 1. Prophase- chromosomes form from chromatin, centrioles form, spindle forms, nuclear membrane breaks up. 2. Metaphase- Chromosomes line up between centrioles. 3. Anaphase- Chromosomes split, chromatids move to opposite ends. 4. Telophase- Chromosomes unwind, spin ...
The Human Cell poster
The Human Cell poster

... CELL CYCLEDEPENDENT PROTEOME ...
Distribution of Lysosomes in Cultured Cells and Ascites Tumor Cells
Distribution of Lysosomes in Cultured Cells and Ascites Tumor Cells

... cells were subjected to a roller tube technique, no subcultures having been used. On the 3rd or 4th day in subculture, the coverslips with adherent cells were removed from the tubes, and rinsed in isotonic saline. The following 5 kinds of rat ascites tumors, Yoshida sarcoma, Takeda sarcoma, GTD4, H- ...
Working in the third dimension - biomed
Working in the third dimension - biomed

... An advanced application of 3D cell culture systems is demonstrated in microfabrication technologies and microfluidics approaches to create 3D cell-culture microenvironments allowing the simulation of tissue-tissue interactions on a chip comparable to a USB stick in size. These microengineered models ...
Electron Microscope Studies on HeLa Cell Lines
Electron Microscope Studies on HeLa Cell Lines

... interiors, the majority of which were in the process of division or budding. Nucleolar fragmentation led to the appearance of many small round nucleoli. HeLa-R.--There were no apparent morphologic differences between resistant cells growing in normal medium or those growing in medium con- ...
Glial Cells: The Other Cells of the Nervous System
Glial Cells: The Other Cells of the Nervous System

... cells, though apparently performing similar functions, have many more specific responsibilities that they take up which makes them distinct in form. The third cell type classified as macroglia are the astrocytes (Figure 5), the multifaceted star like cells of the central nervous system. All these ce ...
Didattica PoliTo - Politecnico di Torino
Didattica PoliTo - Politecnico di Torino

... Among high temperature fuel cells, Molten Carbonate Fuel Cells (MCFC) have reached nowadays an advanced industrial development. In particular, the integration of this technology with microturbines, which represents a major option for future distributed generation, has been already obtained in variou ...
Classification and diversity of living organisms
Classification and diversity of living organisms

... Classification and diversity of living organisms Concept and use of a classificatory system  define and describe the binomial system of naming species and classify the five main classes of vertebrates using visible, external characteristic features only Classification makes the ____________________ ...
Cell Physiology
Cell Physiology

...  Allows some materials to pass, not all  3 types of diffusion in cells - Simple diffusion - lipid-soluble or small - to pass through pores - Facilitated diffusion - too big or not lipid-soluble; need protein carriers (channel or gated proteins) - Osmosis - movement of water across membrane from [h ...
< 1 ... 611 612 613 614 615 616 617 618 619 ... 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