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Taxonomy and Kingdom Notes
Taxonomy and Kingdom Notes

... interbreed (under natural conditions). Some hybrids do occur under unnatural conditions: ligers are crosses between lions and tigers. A hybrid is created by two organisms that can interbreed but are not in the same species. Hybrids are always infertile. Varieties: members of the same species but hav ...
NOTES 2 Membrane_Transport - MacWilliams Biology
NOTES 2 Membrane_Transport - MacWilliams Biology

... 1. Diffusion through protein channels a. channels move specific molecules across cell membrane facilitated = with help b. NO energy needed ...
2014 Advanced Placement Biology Summer Work
2014 Advanced Placement Biology Summer Work

... that you might need during the first 2 days of class. Assignment 1: Obtain the following required materials for the 1st day of class. A. Biology: Concepts & Connection, 6th Edition (2009), Campbell et al. (Same AP Biology text as last year; available through Follett) B. AP Biology Investigative Labs ...
3.1 Cell Theory - Perry Local Schools
3.1 Cell Theory - Perry Local Schools

... Centrioles are tubes found in the centrosomes. – Centrioles help divide DNA. – Centrioles form cilia and flagella. Cilia & flagella assist in movement and feeding – Cilia – short, numerous hair-like extensions – Flagella – longer, move with a whip-like motion – cell usually only has 1 or 2 ...
electrical coupling between fat cells in newt fat
electrical coupling between fat cells in newt fat

... cells in a given preparation before finding a coupled pair . This may not, however, accurately reflect the extent of coupling in the intact fat body. It is likely that many junctions were disrupted during the process of peeling away the surface layer of fat cells and adhering connective tissue . Fur ...
Cell Membrane Structure and Transport
Cell Membrane Structure and Transport

... – Gatekeeping – opens and closes paths through the cell membrane (i.e. nerve cell  K goes in at rest, Na goes in when excited) – Receptor sites – provides a binding site for chemical messengers (like hormones) to induce cell activity (i.e. insulin hormone binds to receptor to open pores to allow su ...
7echap27guidedreading
7echap27guidedreading

... 12. We now classify three types of Archaea. Describe the three types Halophiles Thermophiles Methanogens 13. Roles Prokaryotes Play: For each role summarize what proK’s or give one example of a proK in action Chemical Recycling: Symbiotic Relationships: Pathogens: Also compare Endotoxin and Exotoxin ...
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Hic1

... Introduction to HIC1 nuclear protein ◦ HIC1 (Hypermethylated in cancer 1) - First identified as a tumor suppressor gene frequently epigenetically silenced or deleted in different type of solid tumors (Herman JD et al, N Eng J Med, 2003) ...
What determines the size and shape of a cell?
What determines the size and shape of a cell?

... ‘to build the most basic yeast cell .. you would have to miniaturize the same number of components as are found in a Boeing 777 and fit them in a sphere just 5 Pm across; then somehow you would have to persuade that ...
Synapse and acetylcholine receptor synthesis by
Synapse and acetylcholine receptor synthesis by

... Moscona (1). At 5 days the neurite regions were larger and neurites were packed closer together. A few, immature synaptic connections were seen at this time. By 7 days (Fig. 4B), the intercellular gap between closely packed nebrites was reduced to a width of about 200 K at most points. Synapses now ...
Theoretical background
Theoretical background

... viewed with this system will have a slightly blurred image. The blurred image is the convolution of g1 ( M x , M y ) and PSF(x,y). Another method of studying biological specimens is fluorescence microscopy. It is a tool for studying materials that can be made to fluoresce, either in its natural form ...
Antibodies
Antibodies

... In Human red blood cells, the oligosaccharides responsible for the four major blood groups, 0, A, B, and AB System (ABH (0)) have been intensively studied, isolated and identified. A- The group 0 red blood cells contain a trisaccharide formed by L-fucose, Dgalactose and N-acetyl-D-glucosamine (desig ...
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Review Interaction between the immune system and bone

... knockout mice has highlighted the importance of the interplay and the interdisciplinary field called osteoimmunology. In rheumatoid arthritis, IL-17-producing helper T cells (TH 17) induces receptor activator of NF-κB ligand (RANKL), which stimulates osteoclast differentiation through nuclear factor o ...
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Cellular Transport Notes

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AP Biology - The Bronx High School of Science
AP Biology - The Bronx High School of Science

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Methods of Transport Across a Cell Membrane
Methods of Transport Across a Cell Membrane

... – Sunning– Buffers in our blood-protect against large changes in pH in blood – Roots on a plant-absorb nutrients and water – Leaves on a plant-trans-respiration, photosynthesis – Digestive System- breaks down food to provide ...
Computational Simulation of Optical Tracking of Cell Populations
Computational Simulation of Optical Tracking of Cell Populations

... A more sophisticated data analysis has been performed based on a stochastic model of cell mitosis within a population in order to simulate the fluorescence histogram evolution and so provide a more detailed picture of the quantum dot partitioning during cell division. The QD fluorescence data taken ...
1 PhD position in Cell biology / Biochemistry / Imaging / PI3Kinase
1 PhD position in Cell biology / Biochemistry / Imaging / PI3Kinase

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Outline - Membranes Membranes Membrane Phospholipids

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Fitting fibrils: Modelling cell wall development in plants
Fitting fibrils: Modelling cell wall development in plants

... CMFs and MTs in expanding cells, where forces are exerted. • In many non-expanding cells there is no co-alignment between MTs and CMFs ...
The Cell as a Keebler Factory
The Cell as a Keebler Factory

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CHAPTER 5 student notes - Doral Academy Preparatory
CHAPTER 5 student notes - Doral Academy Preparatory

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evolution-and-behaviour-essay-5 270 kb evolution-and
evolution-and-behaviour-essay-5 270 kb evolution-and

... the animals with no organised tissues or pervading symmetry. The sponges are believed to be the basal group of metazoans from which all other animal groups emerged, since according to both molecular and morphological data sponges were the earliest diverging branch in the animal tree and the earliest ...
PDF
PDF

... evidence that IGF-II-like molecules are synthesized by multiple tissues in the foetus, including liver (Rechler etal. 1979), fibroblasts (Adams etal. 1983), myo­ blasts (Hill etal. 1984), kidney, heart, lung, limb bud mesenchyme, intestine and brain (D'Ercole etal. 1980). More recently Scott etal. ( ...
Cells Notes
Cells Notes

...  Inside the “black box”  Until the advent of the electron microscope, only the nucleus and membrane were known  Chemical analysis and cell fractionation gave us some clue as to the chemical make up of cells, but that’s only part of the picture  The human eye is unable to detect things smaller th ...
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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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