Experiment 2 : Transport Across Membrane Name : Matrix No : Group : B Semester : 1 Date of Experiment : 05.09.2013 Lecturer’s Name : Miss OBJECTIVE To study the effects of hypotonic‚ hypertonic and isotonic solutions on plant and animal cells. INTRODUCTION In cellular biology the term membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes‚ which are lipid bilayers that
Premium Cell wall Cell Cell membrane
Lecture: Plasma Membrane and Transport I. Structure of the Plasma Membrane A. plasma membrane - the surface encapsulating a cell B. Fluid Mosaic Model 1. bilayer of phospholipids a. hydrophilic heads - P04 end "water" "loving" attracted to water on inner/outer parts of cell b. hydrophobic tails - fatty acids "water" "fearing" attracted to each other on inside of bilayer c
Premium Cell Cell membrane Osmosis
Natural causes of climate change Climate change is when the climate changes by warming up or cooling down over a period of time. Climate change is occurring now‚ the climate is warming up dramatically‚ and this is known as global warming.
Premium Earth Sun Global warming
playing of the National Anthem prior to football games he reignited the community of black athletes. Muhammed Ali‚ Bill Russell‚ Jim Brown‚ Arthur Ash and Kareem Abdul-Jabbar. Each of the people a few who used their status as famous athletes to cause change. For as popular as they were as athletes‚ they were much more famous as activists. Ali shared the ring with the likes of Joe Frazier‚ George Foreman and Sonny Liston‚ but no fight was bigger than him going toe-to-toe with the US government when
Premium United States President of the United States American football
as J.K Rowling. This is because Rowling’s Harry Potter books main audience is for boys. This is because her publisher thought that a female’s name for the author would not appeal very well to the audience of boys. So‚ this is why on her books‚ her name is J.K Rowling. The K comes from her grandmother’s name‚ which is Kathleen. But let’s be honest‚ J.K Rowling is also probably the only name you know her by. The idea of Harry Potter‚ came about for Rowling in 1990. For the next five years to come
Premium Woman Jane Austen Fiction
The cell‚ which is the smallest unit of life‚ is surrounded by a plasma membrane. The plasma membrane functions somewhat like a wall‚ as it keeps the internal contents from the external environment. Just like a wall‚ the membrane is also somewhat permeable‚ except that the membrane takes a much more active role in determining what is allowed in to the cell and what is kept out. The plasma membrane is a very thin structure‚ which has some very important tasks. One of the main tasks that it performs
Premium Cell membrane Adenosine triphosphate Molecular diffusion
Noel Arackal 1.25.16 Bisc 4930 Experiment No. 1 – Varying Extracellular Concentration Introduction: This experiment sets out to determine the tonicity of solutions with varying concentrations of sodium chloride on the red blood cells of sheep by measuring the transmittance of a red blood cell/NaCl solution with a spectrometer. This is done in order to study the effects of solutions containing varying levels of tonicity to red blood cells. Tonicity describes what happens to a cell when it is
Premium Chemistry Concentration Water
Experiment 2 The Cell Membrane Abstract The boundary between any cell and its environment is the plasma membrane‚ composed of a matrix of phospholipid molecules along with a number of different kinds of proteins. Membranes have different properties and a variety of functions‚ in large part determined by the specific proteins within the membrane. This experiment is designed to determine the stress that various factors‚ such as osmotic balance‚ detergents and pH‚ have on biological membranes. There are three
Premium Cell membrane Osmosis Protein
Cell Membranes and Transport Hands-On Labs‚ Inc. Version 42-0033-00-01 Exercise 1: Diffusion Observations Data Table 1: Rate of diffusion in different temperatures | | ºC | Minutes | Temperature | InitialTemp. | InitialColor | 5 | 10 | 15 | 20 | 25 | 30 | 60 | Cold | 10°celsius | clear | clear | clear | clear | clear | clear | light purple | light purple | Ambient | 25°celsius
Premium Osmosis Diffusion Temperature
Cell Membrane Transport Cell Membrane Transport Hands-On Labs‚ Inc. Version 42-0034-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a su Premium 609 Words 3 Pages Diffusion and Osmosis of Solutes and Water Across a Membrane Diffusion and Osmosis of Solutes and Water Across a Membrane Brittany Bacallao Nova Southeastern University Abstract: This experiment gave a visual understanding
Free Cell membrane Cell wall Gene