Biology Experiment 2 : Transport Across Membrane Name : Umi Adiba Anis Binti Che Hamid Matrix Number : CPM0147_2013B Batch : Pre-Med May Intake 2013 Group : E Date : 19.06.2013 Lecturer’s Name : Miss Nurul Izziani Objectives : I. To study the effects of hypotonic‚ hypertonic‚ and isotonic solutions on plant and animal cells. Experiment 1 : Introduction : The purpose of doing this experiment is to investigate the effects of hypotonic‚ hypertonic‚ and isotonic solutions on plant
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Premature Rupture of Membranes Article Review As the article states‚ premature rupture of membranes occurs when the amniotic membranes surrounding the growing fetus rupture causing a loss of fluid before 37 weeks of gestation and before the onset of natural labor. PPROM‚ preterm premature rupture of membranes is seen often in women who smoke and use recreational drugs. If PPROM occurs before 26 weeks of gestation it is considered extreme and more often than not leads to more serious complications
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electrically excitable membrane changes its electric potential. In other words‚ how is the cell membrane excited? At the surface of the cell membrane‚ there are three classes of gated channels exist‚ chemically gated or ligand-gated channels‚ voltage-gated channels‚ and mechanically gated channels. Originally‚ at the resting membrane potential‚ most of the gated channels are closed. However‚ when these gated channels open‚ the movement of ions across the membrane will changes the membrane potential. In the
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is generated. Collaterals‚ terminals An axon can branch‚ forming many axon ___. At the end‚ axons branch to form many axon ___. Schwann cells What support cell forms the myelin sheath? Integral proteins What structures in the cell membrane function as ion channels? 1) Charge 2) Size 3) How much water the ion can attract and hold What three characteristics of ions are important for selectivity? Nongated Channels can be classified as either gated or nongated channels. A Na+
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BioLab3 Lab Report 7 Cellular Respiration Answer Key Student Name: I. The ATP Cycle Define the following terms: Autotroph Heterotroph Aerobic respiration Anaerobic respiration Complete the chart below: Letter Defining Term A B C D II. Anaerobic Respiration Define the following terms: Alcoholic fermentation EXERCISE 1 – Alcoholic fermentation At intervals of 20‚ 40‚ and 60 minutes‚ the tubes are removed. Record the
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1. A synovial membrane – secretes synovial fluid 2. Which is correctly paired – abduction – lifting the arm horizontally to form a right angle with the side of the body or moving a part away from the middle 3. Which of the following is not a synovial joint – symphysis 4. Types of fibrous joints inclue – syndesmosis‚ suture‚ and gomphosis joints 5. Joints are also called – articulations 6. The joint that separates two vertebrae is a – symphysis that is amphiarthrotic 7. Fluid-filled
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Activity 1: Stimulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. The two variables that affect the rate of diffusion are: • The composition of the lipid layer‚ this content varies from tissue to tissue. For example kidney tissues have a high cholesterol content which makes them impermeable to water. • The size of the molecule‚ the larger the molecule the slower the rate of diffusion. 2. Why do you think the urea was not able to diffuse
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The total dialysis device and concentrates market will grow to a value of almost $2 billion over the forecast period. The total dialysis device and concentrates market includes the markets for hemodialysis machines‚ dialysis catheters‚ dialysis concentrates‚ dialyzers‚ dialyzer reprocessing machines‚ bloodlines‚ AV fistula needles‚ AV grafts‚ declotting devices‚ guidewires‚ introducer sheaths and water treatment systems. The market will grow as a result of increased patient populations. The patient
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difference in the osmolarity‚ no change in the cells sizes. PART 3 Procedure: 1. Repeat step (1 – 3 of PART 2) using 30% of sucrose solution. Results & Observations: In the hypertonic solution we can notice the shrinking of the cell membrane due to the loose of water. Discussion & Conclusion: Water will move in or out of the onion cells according to the concentration of sucrose in and out of the onion cells: in an isotonic solution no change will happen; in a hypertonic solution
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temperatures will affect the cell membrane‚ thus would then releases the purple pigments out of the vacuole which causes the leakage of the purplish liquid. Background Information The outermost layer is the cell wall‚ which is present only in plant cells and is made up of a carbohydrate called cellulose and also has other protein substances embedded within it. The cell wall is a rigid layer and gives structural stability to the cell and also limits the permeability of large substances into and out
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