Quetext About FAQ Contact Valerie Delucca Professor Di Lauro Biology 109- Anatomy and Physiology 6 December 2016 Into Thin Air Part 1: - Mt. Denali, Alaska, 17,660 Feet People tend to experience dizziness, headache, fatigue, shortness of breath,decrease in brain function, headache, dizziness, frostbite, hypothermia, etc. at higher altitudes due to a decrease of atmospheric pressure. Mark experienced a shortness of breath and could not seem to feel better even when he paused his climb to “take a breather.” This is very common for people who are not accustomed to the difference in pressure because of the difference of altitudes. Same goes for Emily who experienced a headache due to a decrease in oxygen in the air and therefore, in her body.…
The once hot water under the warm chamber began to cool off after a few minutes, while the ice under the cold chamber began to melt. These influences may have changed which chamber the pill bugs chose or changed the temperature of the chambers themselves. As well, I do not think this test is 100% accurate because, it is possible that the pill bugs simply react more actively when placed in a warmer environment rather than a cold one, not necessarily because the pill bugs prefer that temperature. It is possible that the cold temperature became too extreme for the pill bug’s body to handle, causing it to become more inactive. So, we cannot definitively say whether the pill bugs preferred either the cold or warm side of the choice…
This was confirmed by the values obtained from the Handbook of Chemistry and Physics. The experiment involved the use of calorimetry and Hess’s Law to calculate the molar enthalpy of dehydration. An important improvement to increase the accuracy of the data would be to use a digital thermometer with shorter intervals in recording the data, especially when the reaction is occurring. This would improve identifying the true final temperature of the system. Another improvement would be to use a calorimeter that better retains heat.…
Effect of temperature Results In this experiment, results from two Procambarus propinquus (crayfish) were collected to observe the difference in oxygen consumption at different acclimated temperatures. These cray fish were collected from Medway Creek in London, and acclimated to their new environment and temperatures. The crayfish were exposed to the cold environment having an average temperature of 7° or warm having an average of 22°. An unpaired, two-tailed t test was performed to determine if there would be a change in O2 consumption between 2 individual crayfish.…
Results In the lab, 478 trials were conducted using a total of 956 crickets. The 478 pairs resulted in 264 wins for the resident cricket and 214 wins for the intruding crickets. These results produced a chi squared value of 5.230. The p-value calculated from this lab was .022.…
Once the experiment was completed, the results of the experiment were reviewed. The null hypothesis was rejected and the alternative hypothesis, change in temperatures does effect goldfish respiration rate, was accepted. Goldfish are considered ectotherms which mean that their body temperature changes as their environment temperature changes (White and Campo 2015). Ectotherms have two aquatic ectotherm strategies they use to cope with cold temperatures. The goldfish in this experiment used the first strategy, which is to slow down their metabolism.…
During this experiment eggs were rolled on paper towels to blot the excess liquid and then weighed. They were then placed into one of six solutions immediately afterwards. In 15-minute intervals, the eggs were blotted and weighed again. This process was repeated four times, adding up to 60 minutes.…
My group is experimenting on a Daphnia. The purpose of our experiment is to test the Daphnia’s with different liquids and see how heart rate increases,decreases or even kill the Daphnia. The variable in our experiment is changing the water content and seeing what the heart rate. The experiment on the Daphnia matters because if we were to have types of elements in lakes that can possibly kill the Daphnia’s, there can be a possibility there species could end. What the Daphnia prefers is open fresh water in their habitat.…
DNA Extraction A three millimeter square piece sample of unknown thawed tissue was selected using sterilized equipment. The A17 sample was placed in a steril in a 1.5mL Eppendorf tube. The cell membrane of the unknown meat was then broken down and the DNA was extracted by using the animal tissue extraction kit, Qiagen #69506. The final Eppendorf tube contained the DNA from A17 and was stored at -20 oC until gel electrophoresis.…
Determining The Process of Photosynthesis And Cellular Respiration Using Elodea and Yeast Introduction Photosynthesis is an essential process to life on earth, in which plants and other organisms use sunlight to create food from oxygen, and carbon dioxide. Cellular respiration is when energy in food is released and converted to ATP, which is then used as chemical energy to complete tasks within a cell. This process usually requires oxygen and releases carbon dioxide. Photosynthesis and cellular respiration are similar in some areas and different in others. The purpose of both of the process is to produce energy, but they have different ways of achieving this goal.…
The lab instructor issued out a test tube labeled with letter ‘I’, which consisted of two unknown bacteria, Gram-positive or Gram-negative that were streaked from a pure culture. Sterile techniques were followed while performing precise instructions as stated in the referenced Laboratory Manual. Example 1: The first procedure performed was done by isolating a pure culture from the mixture onto a solid Trypticase soy agar (TSA) media. Sterile technique was done by flaming the loop until it turned red to ensure that there were no current bacteria on the loop avoiding contamination followed by rapidly flaming the neck of the test tube to prevent the entry and contamination of unwanted microbes.…
The Effect Of Temperature On The Rate Of Maggot Movement. Environmental Systems and Societies ---Planning Lab--- Gaurav Iyer Research Question To what extent does the temperature affect the movement of Maggots? Introduction…
Abstract The purpose of this investigation is to determine whether the temperature can affect the reaction rate of enzyme activity. The enzyme activity was measured by five different temperatures, separated in tubes which later got measured by their height of foam after 10 minutes. Freshly-prepared potato juice was used as the enzyme for catalase. Since temperature is measured by the kinetic energy of molecules, the higher the temperature, the more movement of molecules.…
Temperature was checked with a thermometer once all the ice had melted. The prepared bath was then…
The final temperature of the water was then recorded. This process was repeated using 1.03 g and 2.07 g of sodium sulphate decahydrate, and 1.01 g, 1.50 g and 2.02 g of anhydrous sodium…