A.Photosynthesis consumes carbon dioxide(CO2)and produces Lab Report

A.Photosynthesis consumes carbon dioxide(CO2)and produces oxygen(O2).Brespiration consumes oxygen(O2) and produces carbon dioxide(CO2)as a byproduct - Lab Report Example It takes place in the mitochondria and the by-products are CO2, H2O and energy. Both cellular respiration and photosynthesis relates in that the by-products of each process is a raw material for the other process. The major purpose of the experiment is to determine that photosynthesis consumes CO2 and produces O2 as a by-product while cellular respiration consumes O2 and produces Co2 as a by-product. In photosynthesis experiment, five 50ml test tube were labelled 1, 2, 3, 4 and 5 using wax pencil. A piece of Elodea plant was placed in tube 1-4 while except 5. Tubes were filled to the brim with 7.0 pH phenol red solution and then each tube was plugged with a rubber stopper. The surfaces of the tubes were wiped with paper towel. Tube 2 then wrapped using two sheets of cellophane, tube 3 wrapped using 2 sheets of green cellophane while tube 4 wrapped with one sheet of aluminium foil and tube 1 and 5 were not wrapped. The tubes were placed under bright white light for 11/2 hours and colour changes noted in each tube. In respiration experiment, goldfish was placed in a 50ml tube containing water with normal conditions for fish. The temperature of water was measured and the number of breaths of the fish per 60sec recorded. Tap water was poured into 600ml beaker and tube with the fish was transferred into the beaker. Small pieces of ice were added one by one to the beaker until the tem perature drops to 100C then process stopped and number of breaths recorded. More ice was added until the temperature drops to 50C then cold water was changed and the procedure above repeated for the temperature of 210C and 250C. The colour of the phenol red turned to orange in all the tubes since the CO2 was absorbed from the environment within the enclosed tubes to react with water thus forming weak acid of pH around neutral hence the orange colour. But since tube 1 had all the factors responsible for

Environmental Management Essay Example | Topics and Well Written Essays - 5500 words

Environmental Management - Essay Example Evolution of the sustainable management has been problematic for two major reasons; firstly the norms of sustainability are continuously changing, for example, values which were unthinkable few years back are now evolving as standard practices. Secondly, sustainability requires the managers to think for the long term not only short term. The manager can take credit for cultural changes in the program but the organization culture reflects the contemporary concepts of the public. During the 1960s and 1970s, the industrial environmentalism time period was emerging where there were less environmental concerns in the industry but businesses successfully overcame these pressures and made separate regulations and definitions. Environmentalists existed but in businesses, they were discredited. In 1970 the U.S. Environmental Protection Agency was created which shifted the norms of environmentalism and created a link between the industry and the environmentalists. Despite this, the two sides d id not really meet. Then by the 1980s, environmentalism emerged as a social responsibility and activism became influential. EPA lost its credibility but major non-governmental organizations were found. Businesses started becoming more cooperative and new managerial structures were formed to deal with regulations. During 1988 and 1993, the industry emerged in understanding and changing attitudes towards environmental protection. New attitudes were adopted and the issue was dealt with in a new manner outlining important steps to be taken.