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
The effect of temperature on the permeability of cell membranes Introduction For my coursework‚ I intend to assess how temperature affects the plasma membrane of a cell. For this I will use the cell of a beetroot. Background What is a cell membrane? The cell membrane‚ also called the plasma membrane is a semipermeable lipid bilayer which is the surface of all cells that surrounds the cytoplasm. The membrane is called a bilayer as it has a double layer of phospholipids. Within the cell membrane
Premium Cell membrane
To investigate the effect of variation in temperature on the permeability of cell membranes using fresh beetroot Aims In this investigation‚ you will subject fresh‚ washed beetroot discs to different temperatures to investigate the effect of temperature on the permeability of the plasma membrane. Overview The beetroot discs will be placed in distilled water at different temperatures. You will compare the intensity of the beetroot pigment that has leaked out from the cells subjectively and possibly
Premium Cell membrane Laboratory glassware Gas
Long-term effects of alcohol From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search Long-term effects of alcohol Classification and external resources ICD-10 F10.1 Disability-adjusted life year for alcohol use disorders per 100‚000 inhabitants in 2004. no data less than 50 50–150 150–250 250–350 350–450 450–550 550–650 650–750 750–850 850–950 950–1050 more than 1050 Total recorded alcohol per capita consumption (15+)‚ in litres of
Premium Alcoholism Alcohol abuse
Damage of Beet Cell Membranes Caused by Different Temperatures Resulting in Betacyanin Leakage By: Trevor Sandum‚ Lab 2‚ March 9‚ 2013 Introduction: A red pigment called Betacyanin located in the vacuole of the beet cells is released when the membrane is damaged (Danyk‚ 2013). The membrane is necessary for sustainability of the cell’s life‚ it separates the cell from the outside environment‚ and is responsible for diffusion‚ exocytosis and endocytosis‚ and transport. It
Premium
influence of peers‚ family‚ society‚ the availability of alcohol‚ mental illness‚ stress‚ and not knowing how to cope with certain situations. It’s a common thing for an alcoholic to think drinking is the answer to all their problems‚ but in retrospect drinking is only adding to the multiple complications caused by being a compulsive drinker. Research has been done to explore the reason behind why people drink. However‚ “Exactly how alcohol affects the brain and the likelihood of reversing the
Premium Alcoholism Alcohol Alcohol abuse
the use of alcohol has been an topic in need of explanation for many years. The concept will be explaned with emphise on the negative effects of hooch. Alcohol in cardio-sport athletes is especially harmful. But at any rate the negative concepts apply to all student. Besides the fact that a large number of students are underage when they drink‚ alcohol can put students in dangerous situations and give them a headache long after the hangover is gone. The short and long term effects alcohol has can impair
Premium Drinking culture Alcoholism Alcoholic beverage
The Effect of Temperature on Beet Cell Membranes and Concentration of Betacyanin Released Introduction Membranes are an important feature of plant cells and they act as a barrier that separates the interior of the cell from the external environment (Campbell et al.‚ 2008). Each membrane layer is composed of a phospholipid layer‚ which is semi-permeable and possesses the ability to control the movement of diffusion. Within the centre of a cell‚ the vacuole that is responsible for storage and
Premium Enzyme Carbon dioxide Oxygen
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
Effects of Marijuana‚ Heroin and Alcohol. Contents Effects of Marijuana Effects of Heroin Effects of Alcohol Effects of Marijuana Marijuana is a combination of shredded leaves‚ stems and flower buds of the Cannabis sativa plant. Marijuana is the most commonly used illegal drug. Occasional marijuana use is rarely seriously harmful‚ but smoking pot has important medical effects. Physiological Effects of Marijuana The active ingredient in marijuana is THC. That ’s short for delta-9-tetrahydrocannabinol
Premium Drug addiction Addiction Cannabis