• 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
Stages of Mitosis
Stages of Mitosis

... In cell (F) the movement of the two complete sets of chromosomes toward the poles of the cell is much further advanced. AS soon as the two sets of chromosomes reach the region of the poles, they will begin to organize themselves into two complete nuclei. The number and kind of chromosome in each of ...
assesment of cryptitis development in ulcerative
assesment of cryptitis development in ulcerative

... stained using routine H&E histological methods using a light microscope Carl Zeiss Ergaval to establish the histopatological diagnosis. The specimens for ultrastructural assessment were stained with uranyl acetate and lead citrate and studied with a JEM-1010 transmission electron microscope. We obse ...
Cell City Analogy Directions: Match the important parts of the city
Cell City Analogy Directions: Match the important parts of the city

... 4.  The  ribosomes  are  small  round  parts  that  produce  proteins  for  the  cell  to  use.  Proteins  are  used  to  build  other  structures   inside  the  cell.  What  do  the  ribosomes  resemble  in  a  Cell  City?   ...
Biology
Biology

... and is released on the other side. ...
The Nervous System - Hartland High School
The Nervous System - Hartland High School

... Cells on the outside of the axons outside of the CNS that produce the myelin sheath by wrapping themselves tightly around the axon in a jelly-roll like fashion. Related to Schwann cells are three other structures of a neuron. i. Myelin Sheath – Myelin cover that encloses the axon ii. Neurilemma – pa ...
Chapter 2 Structure of the Cell
Chapter 2 Structure of the Cell

... The word cell comes from the Latin cellula, meaning "a small room". The cell is the basic structural and functional unit of all known living organisms. It is the smallest unit of life that is classified as a living thing, and is often called the building block of life. Some notes about cells should ...
Lecture The Plant Cell and Physiological Processes
Lecture The Plant Cell and Physiological Processes

... plant cannot survive ...
Lucifer Yellow Uptake in Cells and Protoplasts of Daucas carota
Lucifer Yellow Uptake in Cells and Protoplasts of Daucas carota

... bar= 10 fim). Distance from the top of the cell: (A) 8 /im; (B) 10 fim; (c) 14 jim; (D) 16 jim; (E) 28 /im; (F) 30 /im. ...
Adult stem cells Hessah Alshammari MSc stem cell technology
Adult stem cells Hessah Alshammari MSc stem cell technology

... • Stem cells are distinguished from other cell types by two important characteristics. • They are unspecialized cells capable of renewing themselves through cell division, sometimes after long periods of inactivity. • Under certain conditions, they can be induced to become tissue- or organ-specific ...
PDF
PDF

... study the cells to understand the underlying biology of induced magnetization. Yeast do not normally produce ferritin and instead use an iron transporter to deliver excess iron to cellular storage containers called vacuoles. To boost the iron content in yeast, the researchers added iron to the cells ...
Candy Factory
Candy Factory

... Complete the chart below based on what we learned about a candy factory. Remember the “Candy Factory” is the cell. Candy Factory Role ...
Plant Structures and Functions
Plant Structures and Functions

... • Plant health is closely tied to root health ...
BIOGRAPHICAL SKETCH NAME: Ljubimov, Alexander Vladimir
BIOGRAPHICAL SKETCH NAME: Ljubimov, Alexander Vladimir

... normalizing compromised corneal wound healing in organ-cultured human corneas. We have first described epithelial stem cell alterations in these corneas, and repaired them with gene therapy, which was a pioneering study in a common corneal disease. My lab is developing efficient ways of making corne ...
Review Chapter 5
Review Chapter 5

... Ion Channels: movement of ions across the cell membrane through small passageways ...
video slide
video slide

... formed by replication of a single centrosome. • In animal cells, each centrosome features two centrioles. • Chromosomes, duplicated during S phase, cannot be seen individually because they have not yet condensed. The light micrographs show dividing lung cells from a newt, which has 22 chromosomes in ...
File
File

... and living space. – Food supplies an organism with the energy it needs to move, grow, and develop. Organisms also need water and other materials. – Water is an ingredient in many cellular reactions, it provides structure, and it makes the watery environment cells need. – Most organisms require oxyge ...
Vocab 200 - SharpSchool
Vocab 200 - SharpSchool

... movement of materials through a membrane that requires energy to move molecules in the opposite direction of the way molecules move naturally. Passive transport is the movement of materials through a membrane that does not require energy because the molecules are moving through the holes in the cell ...
Rockin` Hawks - Hiawatha Schools
Rockin` Hawks - Hiawatha Schools

... We will be comparing animal and plant cells, as well as discussing how the cell works in the various body systems. The cell test is coming up on October 16th. Be sure and study your organelles! ...
Poster
Poster

... into innate immune cells. ExoU travels through the T3SS using a chaperone protein (SpcU). Once inside the eukaryotic cell, ExoU interacts with ubiquitin, where it refolds into an active potent phospholipase that breaks down cellular membranes using Ser142 and Asp344 as the catalytic amino acids. The ...
Cellular defense mechanisms against the biological effects of
Cellular defense mechanisms against the biological effects of

... What are the biological risks? - cell death - genetic changes - cancer ...
“Put that in the Form of a Question, Please!”
“Put that in the Form of a Question, Please!”

... What is the food source for fungi? ...
Simple Invertebrates
Simple Invertebrates

... Complete each statement by underlining the correct term or phrase in the brackets. 6. [Hydras / Hydrozoa] live in fresh water and attach to rocks by means of a sticky secretion produced by an area called the [basal disk / endoderm]. 7. Hydras can sometimes move by [tumbling / swimming]. 8. Marine hy ...
INTRODUCTION TO MYCOLOGY
INTRODUCTION TO MYCOLOGY

... Ability to resist lysis by organic solvents such as enzymes, toxins, osmotic integrity. Ability to bind with metal ions. Secretes enzymes from their walls (invertase hydrolyses sucrose to glucose and fructose) and so assisting in nutrition. ...
Study Guide for Lab Exam I
Study Guide for Lab Exam I

... Characteristics of Passive Transport Processes – ____________________________________________________ Know the term “Selective Permeability” – _________________________________________________________ Know definitions of the terms below AND know the consequence for a cell exposed to this external en ...
Biochemistry and the Organization of Cells
Biochemistry and the Organization of Cells

... Mitochondria and chloroplasts: -have 2 membranes -possess DNA and ribosomes -are about the size of a prokaryotic cell -divide by a process similar to bacteria ...
< 1 ... 612 613 614 615 616 617 618 619 620 ... 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