Physiology 168 March 14‚ 2014 Diffusion across a Selectively Permeable membrane Introduction: Diffusion is movement of molecules from one area of concentration to another. This process is vital for the life functions of cells. Cells have selectively permeable membranes that allow only certain solutions to pass through them. Osmosis is a special kind of diffusion that allows water to go through semi-permeable membranes of high water potential to a region of lower water potential. Water potential
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9:00 pm at night on the Vidhyasagar Setu. Dr Rajesh was driving his car at the speed of 60km/per hour. He was returning from Apollo Gleneagles after six surgeries at a stretch. Suddenly he pulled the brake with all his might. Someone while passing through came in front of his car. Dr Rajesh thought he had done a big mistake. In a few seconds a crowd of people gathered around the accident spot. They all started blaming him. But however the doctor bravely stepped out of his car to see the condition
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The 1917 Theda Bara portrayal of Cleopatra came across as threating and ominous as‚ at the time of filming‚ women were getting stronger willed and fighting for equal rights with men. Hollywood showed her image as alluring sexual and self-assured with good looks and air of authority and the power to control men as and when she deemed necessary. The depicted her as the reincarnation of Cleopatra and not just an image of an historical figure. Cleopatra relationship with Julius Caesar and that of
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FOUNDATION COURSE IN ENGLISH-01 (FEG-01) FOUNDATION COURSE IN ENGLISH-1 (FEG-01) Programme: BDPl2011-12 Course Code: FEG-01 Dear Student‚ You are required to do one assignment for the Foundation Course in English-01. It is a Tutor Marked Assignment (TMA) and carries 100 marks. It covers four blocks of the course. Aims: The TMA is primarily concerned with assessing your proficiency in English. You should not reproduce chunks of information from the passage(s) but effectively use the skills
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THE ORGANELLES OF EUKARYOTIC CELLS . The difference between Prokaryotic and Eukaryotic Cells is organelles‚ membrane enclosed structures that perform specific duties. The most important of all is the “nucleus‚” this holds the DNA and is surrounded by a double membrane. The Prokaryotic lacks a nucleus which is not partitioned from the other cells by membranes. The region between the nucleus and plasma membrane is called cytoplasm and in the Eukaryotic cell it consists of various organelles
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Water Transport in Plants Introduction In this lab experiment‚ we set out to examine the different transpiration rates of a plant system in certain environments. Water is transported in a plant by the process of transpiration‚ which is the loss of water through evaporation from the surface of leaves. The stomata in leaves are responsible for the diffusion of water vapor. Transpiration brings water upward through the xylem in the plant. There are certain factors that can affect transpiration
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and animal cells have several differences and similarities. For example‚ animal cells do not have a cell wall or chloroplasts but plant cells do. Animal cells are round and irregular in shape while plant cells have fixed‚ rectangular shapes. Animal Cell Plant Cell Cell wall Absent Present (formed of cellulose) Shape Round (irregular shape) Rectangular (fixed shape) Vacuole One or more small vacuoles (much smaller than plant cells). One‚ large central vacuole taking up 90% of cell volume.
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Chapter 37: Water and sugar transport in plants Water moves from areas of high water potential to areas of low water potential. Water’s potential energy in plants is a combination of (1) it’s tendency to move in response to differences in solute concentration and (2) the pressure exerted on it Plants do not expend energy to replace water that is lost to transpiration when stomata are open and photosynthesis is occurring. Instead‚ water moves from soil and roots to leaves long a water potential
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Associate Program Material Cell Energy Worksheet Answer the following questions: Cellular respiration: • What is cellular respiration and what are its three stages? Cellular respiration is the aerobic harvesting of energy from food molecules. The first stage of cellular respiration is Glycolysis. The second stage of cellular respiration is the citric acid cycle. Lastly‚ the third stage of cellular respiration is the electron transport. • What is the role of glycolysis? Include
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PLANT CELL AND ANIMAL CELL LECTURER : ENCIK AZHAR GROUP’S NAME : 2. Mohd Alimi 3. Suraya Hani 4. Norhaswana CONTENT INTRODUCTION 3 WHAT IS CELL? 4-5 HISTORY OF CELLS DISCOVERY 6 ANIMAL CELL 7 PLANT CELL
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