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Manipulatives/Review Activity [Characteristics of the 6 Kingdoms]
Manipulatives/Review Activity [Characteristics of the 6 Kingdoms]

... Cell walls made of chitin Most are multicellular (yeast is unicellular) Heterotroph No movement Asexual or sexual reproduction ...
7.1 Life Is Cellular
7.1 Life Is Cellular

... the cytoskeleton: a network of protein filaments; it helps the cell maintain its shape and is involved in movement centrioles: organelles made from tubulins; they help organize cell division in animal cells ...
KEY CONCEPT Eukaryotic cells share many similarities.
KEY CONCEPT Eukaryotic cells share many similarities.

... – assists in cell division – aids in cell movement ...
Cell - Etna FFA Agriculture
Cell - Etna FFA Agriculture

... barrier that separates the cell from its surroundings; basic unit of all forms of life. Cell theory idea that all living things are composed of cells and new cells are produced from existing cells. Cell Membrane thin, flexible barrier around a cell; regulates what enters and leaves the cell. ...
Prokaryotic and Eukaryotic Cells
Prokaryotic and Eukaryotic Cells

... and protects it from the outside environment. Ribosomes are found in all cells, both prokaryote and eukaryote, and are relatively small, non-membrane bound organelles where proteins are made (a process called protein synthesis). The cytoplasm is all the contents of the cell inside the cell membrane, ...
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Water Balance of Cells Without Walls
Water Balance of Cells Without Walls

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Cellular Transport Review
Cellular Transport Review

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Cell Structure
Cell Structure

... Vacuoles are fluid-filled sacs that hold materials. Lysosomes contain enzymes to digest material. Centrioles are tubes found in the centrosomes. ...
Cell theory, cell specialization, and cell replacement
Cell theory, cell specialization, and cell replacement

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Science 7 (Life Science)

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Lecture 8: Nervous System
Lecture 8: Nervous System

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Introduction to Microbiology

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lecture notes ch27 prokaryotes

... 5) Many prokayotes are motile. They move with whip-like appendages called flagella. Flagella spin like propellers on a boats 6) The bacterial genome consists of a single loop of DNA. This single chromosome contains all of the genetic information essential for the cell’s life. Bacterial cells also ha ...
Nerve Fibers
Nerve Fibers

... a continuous of the endoneurium. The inner layer is called satellite cells applied closely to the ganglion cells. The cells are of pseudounipolar, most of them are large spherical in shape . the fibers which are present inside the ganglion are of myelinated type. Each cell contains a centrally locat ...
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ReNeuron announces initial pre-clinical data with its ReN003 retinal
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cell membrane

Cells, Organisms and the Variety of Life
Cells, Organisms and the Variety of Life

... consist of long threads called hyphae forming a network called a mycelium (see figure 2.7 on page 18 of the textbook). Each hypha has several nuclei, rather than the one-cell-onenucleus pattern found in the other groups. Their cells have cell walls like plants, but they are made of a different mater ...
Membrane structure, I
Membrane structure, I

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Presentation - Cell analogies
Presentation - Cell analogies

... My Analogy: (What is the “recipe” or instructions for what your system produces?) the recipes they use to make there cupcakes, cookies, etc..... What they use to make there baked goods and to follow the instructions. ...
Immunocyte: the invertebrate counterpart of the vertebrate
Immunocyte: the invertebrate counterpart of the vertebrate

... defense system, involved in both immune and neuroendocrine responses, showing the functional characteristics of vertebrate macrophage. Various names have been used to define this cell in different taxa i.e., hemocyte, celomocyte, amebocyte, plasmatocyte, etc. However, regardless of the terminology, ...
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File - Ms. Arter`s Science Class

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Tour of Cell Organelles

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CH 6 Notes
CH 6 Notes

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Mitosis



Mitosis is a part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus. In general, mitosis (division of the nucleus) is often followed by cytokinesis, which divides the cytoplasm, organelles and cell membrane into two new cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the mitotic (M) phase of an animal cell cycle—the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell.The process of mitosis is divided into stages corresponding to the completion of one set of activities and the start of the next. These stages are prophase, prometaphase, metaphase, anaphase, and telophase. During mitosis, the chromosomes, which have already duplicated, condense and attach to fibers that pull one copy of each chromosome to opposite sides of the cell. The result is two genetically identical daughter nuclei. The cell may then divide by cytokinesis to produce two daughter cells. Producing three or more daughter cells instead of normal two is a mitotic error called tripolar mitosis or multipolar mitosis (direct cell triplication / multiplication). Other errors during mitosis can induce apoptosis (programmed cell death) or cause mutations. Certain types of cancer can arise from such mutations.Mitosis occurs only in eukaryotic cells and the process varies in different organisms. For example, animals undergo an ""open"" mitosis, where the nuclear envelope breaks down before the chromosomes separate, while fungi undergo a ""closed"" mitosis, where chromosomes divide within an intact cell nucleus. Furthermore, most animal cells undergo a shape change, known as mitotic cell rounding, to adopt a near spherical morphology at the start of mitosis. Prokaryotic cells, which lack a nucleus, divide by a different process called binary fission.
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