Orange Park FL 32073 BSC2085C - Anatomy and Physiology I - 333738 Fall Term 2010 Larry Chad Winter lwinter@fscj.edu Submitted - 9/18/2010 NAME Mark Graham Cell Transport Mechanisms and Permeability Activity 1: Simulating Dialysis (Simple Diffusion) Chart 1 – Dialysis Results |Membrane (MCWO) | |Solute |20
Premium Diffusion Osmosis Molecular diffusion
Complement is a system consisting of multiple proteins‚ available in plasma under the inactive form‚ mainly produced by the liver. Complement plays an important role in infection control. Involve in lysis activity‚ opsonic activity‚ join inflammation and fight infection Activation of the classical pathway needs the participation of the complement C1‚ C4‚ C2. Activation of the complement classical pathway usually begins with the formation of complex antigen-antibody dissolved either by binding of
Premium Immune system Bacteria Antibody
The cells in the baso lateral side of the ascending part of loop of Henley contain sodium/potassium ATP ase‚ these constantly remove NA+ and accumulate K+. The Na+ and K+ carrier protein (Sodium/potassium cotransporter) is present on the luminal membrane of the ascending part of loop of Henley. This carrier protein will transport 1 Na+‚ 1 K+ and 2 Cl- into cells. This part of the nephron is water impermeable. Tubular fluid with therefore become diluted as the solutes are being removed The medullary
Free Kidney Nephron Signal transduction
discussed‚ which will help in the development of safe and more efficacious drugs with reduced development time and cost. © 2000 Elsevier Science B.V. All rights reserved. Keywords: New drug development; Biopharmaceutics; Pharmacokinetics; Solubility; Permeability; Lipophilicity 1. Introduction Drug research is a unique multi-disciplinary process heading towards the development of novel therapeutic agents in areas of currently unmet medical need. The drug research can be divided functionally into
Premium Pharmacology Pharmacokinetics Drug development
of Nerve Impulses Activity 1: The Resting Membrane Potential 1. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. Increasing the extracellular K+ causes the membrane potential to change to a less negative value because when K+ ions diffuse out across the membrane they are leaving behind a net negative charge. 2. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value
Premium Action potential
restricting proton entry by cytoplasmic membrane and purging of protons and their effect by cytoplasm. pH homeostatic mechanisms The cell membrane is highly impermeable to protons Membrane channel have a reduced pore size. Protein influx inhibited by chemiosmotic gradient Excess proton pumped out of the cell Cytoplasmic buffering helps to maintain the intracellular pH 1. The cell membrane is highly impermeable to protons High impermeable cell membrane to restrict proton influx into the cytoplasm
Premium Archaea Cell membrane Protein
REVIEW SHEET EXERCISE 1 Cell Transport Mechanisms and Permeability 1. Match each of the definitions in Column A with the appropriate term in Column B. Column A Column B __E___ term used to describe a solution that has a lower concentration of solutes compared to another solution ___G__ term used to describe a solution that has a higher concentration of solutes compared to another solution ___A__ the movement of molecules from an area of higher concentration to an area of lower concentration
Premium Osmosis Diffusion Semipermeable membrane
following questions: A) Define osmosis. Osmosis is the movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration‚ aiming to equalize the solute concentrations on the two sides.[1][2][3] It may also be used to describe a physical process in which any solvent moves‚ without input of energy‚[4] across a semi permeable membrane (permeable to the solvent‚ but not the solute) separating two solutions of different concentrations.[5] Although osmosis
Premium Osmosis Blood
system of the heart has the special property of depolarizing without any external influence with a slow‚ positive increase in voltage across the cell’s membrane (the membrane potential) that occurs between the end of one action potential and the beginning of the next action potential. This increase in membrane potential typically permits the membrane potential to reach the threshold potential at which it fires the next action potential (pacemaker potential). Thus‚ the pacemaker potential is what drives
Premium Action potential
the sentence or statement is true or false. ____ 1. Eukaryotic cells are characterized by a lack of a distinct nucleus‚ whereas prokaryotic cells have intracellular compartments bordered by membranes and a well-defined nucleus. ____ 2. Lipids and proteins are the major components of the plasma membrane. ____ 3. Lysosomes remain fully active by maintaining an acid pH created by pumping hydrogen ions into their interiors. ____ 4. The chief function of ribosomes is to provide sites for lipid
Premium Bacteria Protein Cell membrane