The Aim of this practical was to observe what effect temperature had on the permeability of the cell membrane. Introduction Located within the vacuole of beetroot cells is a red pigment call Betalains. Typically these pigments are contained within the cell vacuole by the tonoplast (vacuole membrane)‚ however When beetroot is heated these red pigments escape the vacuole. This experiment aims to explore the effect of temperature on the permeability of the cell membranes (i.e. Tonoplast)
Premium Cell membrane Cell
Effect of Temperature on Cricket Respiration Crickets are ectotherms that rely on their environment as a source of heat for their metabolism. Warmer temperatures allow crickets to respire at a greater rate. Respiration rate (ppm/sec/g) 1.2 1 0.8 0.6 0.4 0.2 0 0 5 10 15 20 25 30 35 40 45 Temperature (°C) Figure 1: Respiration rate (ppm/sec/g) of crickets at 6 different temperatures (°C). Values are means of 6 respiration rate measurements. Error bars represent
Premium Energy Carbon dioxide Heat
Nicole Reardon Biology 1520‚ Section P2 Effects of penicillin and temperature on the growth of Escherichia coli Abstract Bacteria growth is known to be either augmented or impeded by a number of various factors; in this experiment‚ our group tested how E. coli is affected by penicillin as well as how different temperatures can affect bacteria growth. We know that antibiotics are generally specialized against certain types of bacteria—more specifically‚ some are most effective against Gram-negative
Premium
ways to increase the reaction rate: increase temperature‚ add a catalyst‚ increase surface area‚ and increase the concentration of reactants. The objective of this lab was to experimentally show how temperature and surface area impact the rate of reaction‚ so only two of these methods were tested. The evidence indicates that increasing surface area increases the reaction rate‚ and increasing temperature also increases the reaction rate. Temperature is the measure of the average kinetic energy of
Premium Chemical reaction Reaction rate Chemistry
An experiment to investigate the effect of temperature on the rate of reaction of the Enzyme Trypsin. Aim: This investigation was on the effect temperature has on the rate that the enzyme trypsin hydrolyses its substrate‚ a protein found in milk (casein). This investigation was conducted under controlled conditions‚ the temperature being the changeable variable. Trypsin and its substrate (powdered milk which is a source of the protein casein) were heated in a water bath. The contents of the two
Premium Enzyme
Memorandum To: Urban Planning Department From: Name Subject: Rise of Temperature in Urcity Date: Introduction Agricultural areas all over the world are feeling the effects of suburb expansion. The cities growth is having an effect on the ability of land‚ water‚ and animals. With city growth will create problems such as climate‚ land‚ and geographical changes (Hillel‚ 1995). Critical Findings The agricultural areas of UrCity are being forced further out into the desert basin due
Premium Agriculture Precipitation
selected. Select the BAR CHART tab and turn on Show numerical values. 1. What is the initial temperature of each beaker? Beaker A 95 Beaker B 5 2. Click Play ([pic]) and observe. A. What happens to the temperature of Beaker A over time? Beaker a goes down over time. B. What happens to the temperature of Beaker B over time? Beaker b goes up. 3. Why do you think the temperatures of Beaker A and Beaker B changed as they did? Because of conduction. |Activity A:
Premium Heat Heat transfer Temperature
internal temperature so that the body processes can take place efficiently. The process ensures an equilibrium system is attained for all the body processes. The body temperature of an average individual is 37˚ C. this temperature fluctuates depending on activities one does. A human being is in constant movement unless they are asleep. As such‚ the temperature may increase or decrease thereby varying from this average. Some of the factors that may lead to increase in the body temperature include digestion
Premium Temperature Thermodynamics Energy
Abstract This experiment was designed to answer the question does temperature affect the amount of osmosis? The hypothesis predicted was that the higher the temperature the more osmosis would occur‚ but too high the osmosis would halt due to enzyme and substrate overheating and losing shape. After research and class time it was concluded that osmosis is a passive transport and would not require energy or enzymes due to it going from high to low concentrations with the gradient
Premium Enzyme Semipermeable membrane Energy
Lab #5: Dissolved Oxygen Lab Be sure to read and understand the below instructions BEFORE the lab! Experiment 1: Investigating the Effect of Temperature and Salinity on the Concentration of Dissolved Oxygen in Water Introduction: In an aquatic environment‚ oxygen must be in a solution in a free state (O2) before it is available for use by organisms (bio-available). Its concentration and distribution in the aquatic environment are directly dependent on chemical and physical factors and are
Premium Water Oxygen Temperature