Chapter 4: Membrane Structure and Function Fluid Mosaic Model 1. Consistency of membrane is solid enough to form a boundary‚ but flexible and permeable like a fluid. 2. Proteins scattered throughout - Embedded or on the surface - Can move around laterally 3. Phospholipid from bilayer‚ make up most of membrane 4. Glycolipids have carbohydrate chains attached. 5. Hydrophilic heads point out/into the cell 6. Hydrophobic tails point out towards each other Proteins 1. Glycoproteins: have
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Definition integral membrane protein Term If the direction of the net flux of an ion is against its electrochemical gradient‚ then that transport is passive. Definition False Term Of the gradients listed below‚ which is the most accurate description of the force that ultimately determines the movement of ions across the membrane? Definition Electrochemical gradient Term Which of the following pairs of characteristics is more likely to make a substance diffuse through the cell membrane? Definition
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Active and passive transport are the ways in which cells allow things to move into and out of the cell through the cell membrane. They include many different ways to transport things. Passive transport requires no expenditure of energy by the cell. However‚ Active transport requires ATPs which have energy in order for it to move something through the cell membrane. There are different types of transport to suit the sizes of molecules as well. Passive transport includes diffusion‚ osmosis‚ and
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BIOLOGY DB015 (ASSIGNMENT) PASSIVE AND ACTIVE TRANSPORT GROUP MEMBERS : ABDUL MUIN BIN ABDUL MALIK (MS1311580012) AIMAN HAKIM BIN A.MANAP (MS1311580006) MUHAMMAD AMIN BIN MAT SAUPI (MS MUHAMMAD FARIZUL BIN AMRAN (MS LECTURER : MISS AFIQAH BT MOHAMED Q INTRODUCTION The various organelles and structure within a cell require a variety of subtances in order to carry out their functions. In turn‚ they form products; some useful and some not. Most of these substances must pass in and
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our equation‚ the water potential of the potato and carrot are -500 kPa and -1000 kPa (respectfully) as in this case the solute potential equals the water potential as there is no pressure potential as the solution is open and it isn’t under a membrane so it is not under pressure. The Water Potential (Ψ) of the solution is equal to the Ψ of the tuber as there is no pressure potential. C2 and C3 As the concentration of the sucrose solution increases‚ the average percentage change in mass decreases
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by using the application of membrane have become highly demand in various industries. In this newly separation process ‚ the membrane function as a semi-permeable barrier and the separation process occur by the membrane controlling the rate of movement of various molecules between two liquid phases ‚ two gas phases or a mixture of a gas phase and liquid phase. In industries‚ many companies have high demand on both quality and quantity of water for production. Membrane process can be used to separate
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BIOL 2010 ANATOMY AND PHYSIOLOGY I Chapter 4: TISSUES AND MEMBRANES Outline of Notes I. Introduction. A. General: Cells are highly specialized and interdependent on one another. Groups of similar cells performing similar functions are called Tissues The study of tissues is called Histology. Organs are made of tissues. A detailed understanding of tissues will greatly help your understanding of organs and organ systems later in this course. Tissues are classified into 4 main types:
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Membrane Processing MEMBRANEFILTRATION A membrane or‚ more properly‚ a semipermeable membrane‚ is a thin layer of material capable of separating substances when a driving force is applied across the membrane. Membrane filtration enables to separate particles with a diameter smaller than the pore diameter in the membrane from the liquid feed‚ by applying a driving force (pressure) over the membrane. The membrane technology consists principally of Microfiltration (MF)‚ Ultrafiltration
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1 The Effect of Molecular Weight on the Rate of Diffusion of Substances1 Alexander Ken Libranza Group 1 Sec. A – 1L March 6‚ 2012 A scientific paper submitted in partial fulfillment of the requirements in General Biology I laboratory under Prof. Cheryl M. Talde‚ 2nd sem.‚ 2011-2012. 1 2 ABSTRACT The effect of molecular weight on the rate of diffusion was assessed using two tests: the glass tube test and the agar-water gel test. In the glass tube set-up‚ two cotton plugs soaked
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Epidermal‚ Parenchyma‚ Collenchyma‚ Sclerenchyma‚ Xylem and Phloem Cells Drawings: Drawings on following pages. Discussion: Plant cells are surrounded with a tough‚ slightly elastic wall of cellulose. Within the cell wall is the cell surface membrane‚ which is selectively permeable and controls the movement of substances into and out of the cell. The cytoplasm contains the organelles of the cell‚ as well as chemicals required for respiration and growth‚ along with the products of reactions within
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