• 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
tissues.
tissues.

... Glandular hairs (secretory) prevent herbivory by storing substances that are harmful to insects. ...
THE CELL - Kevan Kruger
THE CELL - Kevan Kruger

... Surrounded by a double-layered membrane (the nuclear envelope). Membrane has pores through which larger molecules pass. (Nuclear Pores) Control center for the cell’s functions. (The brain). Contains a fluid called the nucleoplasm. Contains chromatin (DNA strands which forms chromosomes during cell d ...
volvox notes, 14
volvox notes, 14

... Belonging to the Kingdom Protista, volvox are one-celled (unicellular) algae that live together in a colony. Volvox are among the most abundant creatures on Earth, growing wildly in lakes, puddles, and even aquariums. Just barely visible as a pale green dot to the human eye, under a microscope volvo ...
Development2 - Napa Valley College
Development2 - Napa Valley College

... A. Differentiation of Cells, Tissues and Organs - differentiation of cells and body structures results from differential gene expression. - protein transcription factors control patterns of gene expression in cells - expression of different genes in different cell types produces tissue-specific prot ...
Document
Document

... (env) ...
The Body at War - aiss-science-9
The Body at War - aiss-science-9

... doesn’t function normally or properly. ...
2.2.2 Function of the Prokaryotic cell parts
2.2.2 Function of the Prokaryotic cell parts

... will arise from the sum of the parts, this is explanatory reductionism. Biological systems need a different approached, population thinking, which acknowledges the role of variation in a population. Consequently the deterministic laws and theories of the physical sciences do not apply to all aspects ...
Cell City Answers
Cell City Answers

... b. Why do you think so? Proteins which are building blocks of cells are constructed at the ribosomes as are structures for the city are built by a construction company. 5. The jelly-like area between the nucleus and the cell membrane is called the cytoplasm. It helps organelles move throughout the ...
Notes for Organelles and Function
Notes for Organelles and Function

... entering (osmosis) the vacuole, which then swells exerting internal force on the cell wall •Causes “rigidity” so the plant my increase by stacking cells ...
Ch 4 Review Game
Ch 4 Review Game

... contain more chromosomes than less complex organisms? A: NO (a potato contains more chromosomes than humans) ...
Organization of unit 18
Organization of unit 18

... Batteries of the future The dry cell has changed little since its development over 100 years ago. The development of more powerful batteries often relys on whether scientists can overcome major technical problems. One such problem is the use of highly reactive material in batteries. Theoretically, m ...
Surface Area
Surface Area

... the lungs. It also has an antibacterial effect, healing to remove any harmful bacteria that reach the alveoli. ...
Cellular response in subretinal neovascularization induced
Cellular response in subretinal neovascularization induced

... products of infiltrating macrophages6 and RPE. In particular, migrating RPE cells have been shown to be a source of the strongly angiogenic vascular endothelial growth factor (VEGF) in human CNVM.3 The presence of VEGF or other secondary angiogenic factors derived from either RPE or macrophages will ...
Nanomedicine Seminars 2015_1
Nanomedicine Seminars 2015_1

... The goal of all immunotherapeutic approaches against solid tumors is the induction and expansion of tumor infiltrating T lymphocytes (TILs) that invade tumor mass and kill transformed cells. Typically, TILs are unable to reach the core of the tumor mass, and they concentrate at the border of the ne ...
Understanding the genetic basis of cancer and its treatments
Understanding the genetic basis of cancer and its treatments

... New cells go through four phases known as the cell cycle: G1 (a growth phase where enzymes are made), S (a synthesis phase where DNA replication occurs), G2 (a second growth phase, where proteins, particularly those involved in cell division, are made) and M (where the cell divides into two and the ...
Transformation and Protein Purification
Transformation and Protein Purification

... Bacterial Transformation Lab • Bacterial Cells and plasmid DNA are mixed • Cells take up plasmid • Cell/DNA mix is plated on nutrient agar with antibiotic • Only cells which obtained plasmid DNA will grow… and glow ...
The Cell
The Cell

... chromatin comes together, you can see the chromosomes. The nuclear envelope is a double-membrane structure. Numerous pores occur in the envelope, allowing RNA and other chemicals to pass, but the DNA not to pass. ...
BACTERIA
BACTERIA

... Lack a true nucleus; instead, have a region called the ‘nucleoid region‘where DNA congregates ...
Mitochondrial inheritance is mediated by microtubules in
Mitochondrial inheritance is mediated by microtubules in

... daughter cells are generated, containing approximately equal complements of the organelle. The second type of inheritance strategy is an ordered process in which organelles are actively delivered by the cytoskeleton into daughter cells. An example of ordered inheritance is the robust segregation of ...
Lab C: Osmosis in a Plant Cell
Lab C: Osmosis in a Plant Cell

... When a cell is in an isotonic solution, it will experience neither a net gain or loss of water. A isotonic solution contains an equal concentration of solutes as the cell and therefore an equal concentration of water. Consequently, water will flow equally into and out of the cell. Plasmolysis is the ...
An Experimental Method for Ribosome Quantification in a Cell using
An Experimental Method for Ribosome Quantification in a Cell using

... Beer Chakra Sen All living organisms are made up of fundamental units of life called cells. These compartmentalized structures comprise of different proteins and organelles. To survive, these cells need to produce proteins, with different functions. Within these compartments, among other important o ...
Diapositiva 1 - Medical Cannabis Bike Tour
Diapositiva 1 - Medical Cannabis Bike Tour

... used in in vitro and in vivo experiments, ethanol must be evaporated and the required amount of cannabinoids re-solved in a lipid solvent. During the processing of samples, cannabinoids must be protected from light and exposed to a nitrogen atmosphere as they are photosensitive and can get oxidized ...
human Serotonin 5-HT2A Receptor Cell Line
human Serotonin 5-HT2A Receptor Cell Line

How Plants Defend Themselves against Pathogens
How Plants Defend Themselves against Pathogens

... Open…Dry Out in Heat of Day, Die ...
Rickettsia
Rickettsia

... These Proteus strains have no etiological role in rickettsial infections, but appear to share antigens in common with certain rickettsia. These antigens are alkali stable polysaccharide haptens which are distinct from the group-specific and type-specific antigens. In interpreting the results, it mus ...
< 1 ... 586 587 588 589 590 591 592 593 594 ... 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