• 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
Each element is abbreviated by a one or two letter symbol
Each element is abbreviated by a one or two letter symbol

... Chapter 9 - Homeostasis and the plasma membrane ALL organismsare subjectto constantchangesin theirenvironment Failureto adjustto changesin the environment can meandeathfor an organism ...
Epithelium Glands - Dr. Merchant - eCurriculum
Epithelium Glands - Dr. Merchant - eCurriculum

... connective tissue -some hormones eventually enter the bloodstream in order to reach their target cells - some hormones affect cells within the same epithelium (i.e. paracrine) ...
Tour of Cell Organelles
Tour of Cell Organelles

... to run daily life & growth, the cell must…  read genes (DNA)  build proteins  structural proteins (muscle fibers, hair, skin, claws)  enzymes (speed up chemical reactions)  signals (hormones) & receptors ...
Biology Questions p
Biology Questions p

...  Each level of treatment should be tested more than once.  Celery stalks should all be the same length. 40) a) Mitochondria are important for energy production. This cell is taking in lots of sugar—it is probably making energy with it. b) The cell is involved in movement of some kind. It needs lot ...
Biochemistry and Structure of Cell Organelles
Biochemistry and Structure of Cell Organelles

... occasional review. Recently there was published as a book the deliberations of a conference on these matters which took place in Dallas in January 1978. Now an important new volume has appeared, reporting the proceedings of a symposium on ‘Cell ...
Membranes - Continuing Education Gateway
Membranes - Continuing Education Gateway

... – Centrioles are found there (animal cells only) ...
Viruses vs. Bacteria Notes
Viruses vs. Bacteria Notes

... evolve like living cells. However, other scientists argue that because viruses do not contain all of the characteristics of life, they are not living. - Viruses are considered a type of parasite. A parasite is something which can functions by using another living organism for all of their resources. ...
The exPeRiMenT In this experiment using the iPad, you have to take
The exPeRiMenT In this experiment using the iPad, you have to take

... In this experiment using the iPad, you have to take on the role of autophagy. The Science The cells of our body have a built-in surveillance system called autophagy (which means ‘self-eating’ in Greek!). Using autophagy cells can detect and destroy bad proteins or even bacteria that have entered the ...
PowerPoint Presentation - Springer Static Content Server
PowerPoint Presentation - Springer Static Content Server

... and classification are indicated at the bottom of the figure (x axis). This supplemental figure is based on the same data than Fig. 1. Here, mRNA expression levels of the treated condition (black bars) are not related to the untreated one (white bars). Although this representation provides a less vi ...
B1 Cells - Beck-Shop
B1 Cells - Beck-Shop

... is a jelly-like substance called cytoplasm, in which are found many small structures called organelles. The most obvious of these organelles is usually the nucleus. In a plant cell, the nucleus is very dificult to see, because it is right against the cell wall. The cell membrane is a very thin layer ...
28.1 Levels of Organization
28.1 Levels of Organization

... determination, they lose their ability to express some of this information. Once a cell is committed to becoming a specialized cell, it will develop into only that type of cell. For instance, a cell that will become a neuron can only be a neuron, even if it is transplanted into another part of the b ...
Cell Surface Targeting (we`re actually trying it!)
Cell Surface Targeting (we`re actually trying it!)

... Cell Surface Targeting (we’re actually trying it!) ...
A novel source for Mesenchymal stem cells
A novel source for Mesenchymal stem cells

... MSCs can be engrafted at the damaged site(s), attenuate pathologic remodeling of the heart tissue and reduce scar size, leading to improved post-MI cardiac function ...
Unit 1 Topic 1: Cells - Inverness Royal Academy
Unit 1 Topic 1: Cells - Inverness Royal Academy

... Describe the function of cell structures namely the nucleus, cytoplasm, cell membrane, cell wall , chloroplast and vacuole. ...
Understanding the role of HDAC1 in transcriptional activation
Understanding the role of HDAC1 in transcriptional activation

... Bioinformatic analysis of the RNA-seq and ChIP-seq data (performed in the Schmid lab) will be used to compare the transcriptome and ChIP-seq data from HDAC1Low cells to publically available data sets in the Geo Expression Omnibus (GEO) and ArrayExpress databases to identify proteins/inhibitor treatm ...
Part 2: Simulating cell motility using CPM
Part 2: Simulating cell motility using CPM

Pollard: Cell Biology, 2nd Edition
Pollard: Cell Biology, 2nd Edition

... b. is separated from the cytoplasm by a nuclear envelope in eucaryotic cells. c. is metabolically isolated from the cytoplasm by the double membrane. d. Only a and b. ANS: D The nucleus is an organelle that contains hereditary information in the form of chromosomes. It is separated from the cytoplas ...
Cell Children’s Book Project - Iroquois Central School
Cell Children’s Book Project - Iroquois Central School

... When you write a story make sure you include a setting , plot , atmosphere , character traits and goals. Try not to introduce all the characters at once one point in the story. Make sure you explain the characters with colorful language, such as intelligent , ambitious , contientous , etc., instead ...
Unit 2
Unit 2

... 4. List the phases of the cell cycle and describe the sequence of events that occurs during each phase. The mitotic (M) phase: when mitosis and cytokinesis actually actually divide the nucleus and cytoplasm, mitotic phase is the shortest part of the cell cycle. Interphase: accounts for about 90% of ...
ch15
ch15

...  This means that after every mitotic division, one of the resulting diatoms is smaller than the original. This can go on for several generations.  Eventually, the protoplast inside the tiny shell undergoes meiosis rather than mitosis. Four haploid gametes are released from the shell, which is dis ...
Section 3.5 Introduction
Section 3.5 Introduction

... adenosine triphosphate, or ATP. ATP is a molecule that transfers energy from the breakdown of food molecules to cell processes. A cell may use this energy directly or indirectly. The sodium-potassium pump directly uses energy from the breakdown of ATP to pump two potassium ions into a cell for every ...
Re-constructing our models of cellulose and primary cell wall
Re-constructing our models of cellulose and primary cell wall

... Numerous aspects of the oft-cited ‘tethered network’ model of the plant primary cell wall are challenged by recent results. This review integrates recent discoveries into a coherent view of the primary cell wall to identify the next generation of questions: ...
Cytoplasm
Cytoplasm

... The cytoplasm is a gel like substance that is composed mainly with water. ...
June 22, 2016 Yumanity Therapeutics and the New York Stem Cell
June 22, 2016 Yumanity Therapeutics and the New York Stem Cell

... announced a discovery collaboration with the New York Stem Cell Foundation (NYSCF) Research Institute, a non-profit organization dedicated to accelerating cures for major diseases through stem cell research. The immediate aim of the partnership is to generate induced pluripotent stem cell (iPSC) lin ...
- mrsolson.com
- mrsolson.com

... Is it alive?-Say hello to my little friend, Card Sort, Go go stem cells, The wacky history of the cell theory-video clip, Microscope rules w/video clip, Microscope cork & pond observations (Hooke and Leuwenhoek) Quiz #1 on part I, Structure and Function Sort, How does breathing get oxygen to our cel ...
< 1 ... 636 637 638 639 640 641 642 643 644 ... 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