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III. Circulatory System
III. Circulatory System

... C) White Blood Cells are the main components of the immune system. 1. Different w.b.c’s have different roles, including:  Identify pathogens  “Tag” pathogens for destruction by other wbc’s.  Destroy pathogen by eating it.  Destroy pathogen using chemicals  Make antibodies D) Antibodies are prot ...
Tool E - Workshops+SJCOE Workshop Management
Tool E - Workshops+SJCOE Workshop Management

... mitochondria, cell membrane, and cell wall.] [Assessment Boundary: Assessment of organelle structure/function relationships is limited to the cell wall and cell membrane. Assessment of the function of the other organelles is limited to their relationship to the whole cell. Assessment does not includ ...
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Bacteria Reproduction: Not quite the same!

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Osmosis in Red Blood Cells
Osmosis in Red Blood Cells

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Cell signaling • Fertilization (3 ligand-receptor pairs
Cell signaling • Fertilization (3 ligand-receptor pairs

... •  How is cell proliferation used in the growth of developing tissues? •  What are the post-fertilization stages of development? –  How many cells do they have? ...
File - thebiotutor.com
File - thebiotutor.com

... o Have attached carbohydrate chains – only found on exterior of cell membranes. o They have a specific shape o These stabilize the membrane by forming hydrogen bonds between water molecules. o These can act as receptor sites where drugs, hormones and antibodies can bind. o They can acts as receptors ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)

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Cell Brochure
Cell Brochure

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Tonicity, which is directly related to the osmolarity of a
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... solute particles; a solution with high osmolarity has fewer water molecules with respect to solute particles. In a situation in which solutions of two different osmolarities are separated by a membranepermeable to water, though not to the solute, water will move from the side of the membrane with lo ...
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Hypertrophy

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asdfs - The Wesley School
asdfs - The Wesley School

... Chromatid arms separate and move to opposite ends of the cell _______________ TELOPHASE Chromosomes unwind into chromatin & nucleus returns PROPHASE _______________ Nuclear membrane & nucleolus disappear ...
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The Cell -- Membranes

... and is attracted to water. It is POLAR HYDROPHOBIC TAILS The two long chains coming off of the bottom of this molecule are made up of carbon and hydrogen. Because both of these elements share their electrons evenly these chains have no charge. They are NON POLAR. Molecules with no charge are not att ...
Cells - hrsbstaff.ednet.ns.ca
Cells - hrsbstaff.ednet.ns.ca

... 3. All cells have selectively permeable membranes. The membranes are designed to block some substances from crossing into or out of the cell. Likewise, the are designed to let certain substances specifically into and out of the cell. 4. The pores are different sizes due to the fact that the molecule ...
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...  The clock has specific where the cell cycle stops until a goahead signal is received ...
Movement through the cell membrane Power Point
Movement through the cell membrane Power Point

... B. Carrier proteins (Transport)- a protein that selectively interacts with a specific molecule or ion so that it can cross the cell membrane to enter or exit the cell. C. Receptor proteins - A protein that has a specific shape so that specific molecules can bind to them. The binding of a molecule, s ...
Chapt_2_CELLS
Chapt_2_CELLS

... • New cells produced may change and develop into new tissues. • This process by which a cell becomes specialised for a specific function is called differentiation. Cells may develop special structures or lose certain structures for them to carry out specific functions. e.g. Human cells become differ ...
Summary of Cell Communication Chapter 11
Summary of Cell Communication Chapter 11

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Blood Vessels and Nerves

... Long-range vascular endothelial growth factor (VEGF) gradients allow endothelial cells (ECs) to maintain their directional course to the target cell, whereas short-range matrix-bound VEGF guideposts are necessary for ECs to migrate step-by-step along the journey. a | In the absence of heparinbinding ...
T-cell Maturation T cell maturation
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... • Remember: Naïve T cells continually re-circulate between the blood and lymph system search for appropriate antigen • Once activated (Remember signal 1 and 2)  Primary response where T cells proliferate and differentiate into effector and memory T cells. • CD4 effector T cells can form two subpop ...
Lesson 5A - Mitosis Worksheets
Lesson 5A - Mitosis Worksheets

... 1. The sister chromatids are moving apart. 2. The nucleolus begins to fade from view. 3. A new nuclear membrane is forming around the chromosomes. 4. The cytoplasm of the cell begins to divide. 5. The chromosomes become visible. 6. The chromosomes are located at the equatorial plate of the cell. 7. ...
Diffusion, Osmosis and Biological Membranes
Diffusion, Osmosis and Biological Membranes

... and out of the cell? Because the membrane is selectively permeable. It allows easy entry of some molecules and more difficult entry of others, possibly preventing entry at all! ...
The Inflammatory Response
The Inflammatory Response

... Cytokines are small signalling molecules that attract phagocytes to the site of infection. Phagocytes are white blood cells that engulf and destroy the bacteria that have caused the infection, they also engulf and destroy damaged tissue cells. The presence of bacteria at the site of infection stimul ...
membrane transport class notes
membrane transport class notes

... • Why is it necessary to regulate what goes in and out of a cell? • What are some examples of substances that enter a cell? Leave a cell? • What does the term concentration mean? – Provide an example to explain concentration ...
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Extracellular matrix



In biology, the extracellular matrix (ECM) is a collection of extracellular molecules secreted by cells that provides structural and biochemical support to the surrounding cells. Because multicellularity evolved independently in different multicellular lineages, the composition of ECM varies between multicellular structures; however, cell adhesion, cell-to-cell communication and differentiation are common functions of the ECM.The animal extracellular matrix includes the interstitial matrix and the basement membrane. Interstitial matrix is present between various animal cells (i.e., in the intercellular spaces). Gels of polysaccharides and fibrous proteins fill the interstitial space and act as a compression buffer against the stress placed on the ECM. Basement membranes are sheet-like depositions of ECM on which various epithelial cells rest.The plant ECM includes cell wall components, like cellulose, in addition to more complex signaling molecules. Some single-celled organisms adopt multicelluar biofilms in which the cells are embedded in an ECM composed primarily of extracellular polymeric substances (EPS).
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