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Exporter la page en pdf
Exporter la page en pdf

... Molecular Signaling, Epithelium-to-Mesenchyme transition, and Cell Motility in Embryogenesis cell factor/lymphoid enhancer factors family) transcription factor complexes. By using both a luciferase assay in MCF-7 cells and a Xenopus secondary axis induction assay, it was demonstrated that WWOX inhib ...
Cell Structure Notes
Cell Structure Notes

... Eukaryote • Eukaryotes arose from prokaryotes and developed into larger more complex organisms. • Eukaryotes are cells that contain a nucleus and organelles surrounded by a membrane, such as mitochondria and chloroplasts. ...
Structure and Function of Cells – Glossary
Structure and Function of Cells – Glossary

... large sac like structure in a plant cell that regulates water content of the cell ...
The Cell
The Cell

... http://www.yellowtang.org/animations/organization.swf ...
The Cell - myndrs.com
The Cell - myndrs.com

... similarly cells have organelles which perform the necessary function of particular cells. Many organelles are bound by their own membrane(s) The proportion of the different organelles inside a particular cell depends on the function of the cell. ...
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How cells communicate with each other

... Every of the pathway of DNA repair has different subpathways (as a backup) ...
Document
Document

... functions, and copies its DNA. Interphase is followed by mitosis (mi TOH sus), the period when the nucleus divides. Mitosis is followed by cytokinesis (si toh kih NEE sis), the period when the cytoplasm divides and two cells are created. The time it takes a cell to complete the cell cycle varies dep ...
Cell Structure I
Cell Structure I

... Before cell division each centrosome duplicates, during mitosis the centrosomes move to opposite poles where they become organizing center for the microtubules of the mitotic spindle.  Primary Cilia: Found on virtually every cell. Very important during development. Nonmotile, no central pair of mic ...
Chemical Signals in Animals
Chemical Signals in Animals

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Effect of ±5ºC difference from physiologic temperature on surface
Effect of ±5ºC difference from physiologic temperature on surface

... highest compared to that of febrile range temperature 42°C and that of low temperature of 32°C. Despite the inconsistent pattern of changes in cell's surface area (Fig. 1), changes in cell volumes showed a homogeneous pattern (V at 42°C and 32°C is greater than 37°C) (Fig. 2). What determines this t ...
worksheets. - hrsbstaff.ednet.ns.ca
worksheets. - hrsbstaff.ednet.ns.ca

... 12. This structure is a folded membrane the moves materials around in the cell ________________ 13. This part of the cell makes protein ______________________________________________ 14. Some ribosomes are found in the cytoplasm, others are attached to the ___________________ 15. This structure pack ...
Plant and Animal Cell Organelles and Functions
Plant and Animal Cell Organelles and Functions

... SPI 0707.1.1 Identify and describe the function of the major plant and animal cell organelles. • Cells are the structural and functional units of all living organisms. Some organisms, such as bacteria, are unicellular, consisting of a single cell. Other organisms, such as humans, are multicellular, ...
Cell Organelles and Structures
Cell Organelles and Structures

... SPI 0707.1.1 Identify and describe the function of the major plant and animal cell organelles. • Cells are the structural and functional units of all living organisms. Some organisms, such as bacteria, are unicellular, consisting of a single cell. Other organisms, such as humans, are multicellular, ...
Cells, Tissues, Organs and Organ Systems - E
Cells, Tissues, Organs and Organ Systems - E

... cells have neither a membrane-bounded nucleus nor other membrane-bounded organelles. These organisms are very successful. Did you know all bacteria found on the surface of our planet weigh more than any other species? That's amazing. ...
Excretory System PowerPoint
Excretory System PowerPoint

... ⬜ Stratum granulosum – this layer of cells is about to die and become the next layer. The cells are full of granules that will keratinize to offer our skin the protection it needs ⬜ Stratum spinosum – This layer is full of lipids that reduce water loss from the skin ⬜ Stratum basale – the cells in ...
[Content_Types].
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... genetic information. If we look inside this tiny but important organelle we will find 23 pairs of chromosomes. It is on these structures that we see several different sets of instructions for many different observable Traits, like eye color and hair color. These observable characteristics are determ ...
3 Fundamental Parts of a Cell
3 Fundamental Parts of a Cell

... Mitochondria and chloroplasts each contain their own genome, which is separate and distinct from the nuclear genome of a cell. Both organelles contain this DNA in circular plasmids, much like prokaryotic cells, strongly supporting the evolutionary theory of endosymbiosis; since these organelles cont ...
Science Monday 1/11/16
Science Monday 1/11/16

... 4) Democrats more strongly support SC research. Independents are about the same as the public. Republicans show less support than the public. - Level 2 Question 8) 24% oppose it - Level 1 Question 9) What would you choose to do? - Level 3 Question 10) Predictions? - Level 3 Question ...
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... • The cytoskeleton is a web of proteins in the cytoplasm. It acts as both a muscle and a skeleton. • The cytoskeleton keeps the cell’s membranes from collapsing and helps some cells move. • The cytoskeleton is made of three types of protein. One protein is a hollow tube and the other two are long, s ...
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Energy Organelles & the Cytoskeleton

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CELLULAR ORGANELLES Chapter 2 Lesson 2 Part 2
CELLULAR ORGANELLES Chapter 2 Lesson 2 Part 2

... mitochondria many be large and numerous with many cristae (as in muscle cells) or they may be small and relatively few with only a few cristae. ...
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Cell Parts

... Phospholipid bilayer acts like a fluid The lipids and proteins can move laterally within the bilayer Mosaic- pattern is constantly changing ...
Electromagnetic radiation
Electromagnetic radiation

... The oldest metabolic process centres inside the cell. Their confirmed age is 2 billion for eukaryotes and at least 4 billion years for Archaea/prokaryotes and probably older – and then there are others like extremophiles, viruses and RNA which could well be 13 billion years old. Expanding and retrac ...
Cells, Tissues, Organs and Organ Systems
Cells, Tissues, Organs and Organ Systems

... cells have neither a membrane-bounded nucleus nor other membrane-bounded organelles. These organisms are very successful. Did you know all bacteria found on the surface of our planet weigh more than any other species? That's amazing. ...
The Phenotype of 'Cancer' Cells
The Phenotype of 'Cancer' Cells

... synthesis, protein synthesis, protein modification in the Golgi apparatus, protein packaging, and export of newly synthesized proteins. Note where “Growth Factor” is being used to identify the newly synthesized protein, this does not mean that it is acting as a growth factor yet. It is being used an ...
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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.
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