Exercise 10: Acid-Base Balance: Activity 3: Renal Responses to Respiratory Acidosis and Respiratory Alkalosis Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 07/18/13 page 1 Experiment Results Predict Question: Predict Question 1: What effect do you think lowering the PCO2 will have on [H+ ] and [HCO3- ] in the urine? Your answer : d. [H+ ] will decrease and [HCO3- ] will increase. Predict Question 2: What effect do you think raising the PCO2 will have on [H+ ] and [HCO3- ] in the urine? Your answer : c. [H+ ] will increase and [HCO3- ] will decrease.
Then you put the remaining liquid (neutral component mixture) through the suction filtration funnel to isolate the crystals. After 10-15 minutes, the crystals will be dry and you can weigh them and find their melting point. How is the neutral component of your 3-compound mixture isolated from the final methylene chloride solution? 16 of 22 4/16/12 9:15 PM StudyBlue Flashcard Printing of Lab Final 2211L UGA http://www.studyblue.com/servlet/printFlashcardDeck?deckId=... Name the four active ingredients that we will be testing for in the TLC of Analgesics lab: Ibuprophen Caffeine Acetaminophen Acetylsalicylic acid What solvent system will you be using to dissolve the common analgesics (power) in preparation for TLC spotting? Methylene chloride: ethanol (1:1 solution) What solvent system will you be using to "develop" your TLC plates in the TLC of Analgesics lab?
Question doesn't relate to hypothesis - fix! AP Lab – Cellular Respiration Question: How does temperature affect the rate of cellular respiration in germinating and dry peas? Hypothesis: If both germinating and dry peas are placed in a respirometer and submerged in room temperature water and water with a temperature of 10 °C, then the respirometer with the germinating peas will prove a greater rate of cellular respiration than that of the dry peas in both temperatures of water. Procedure: See lab handout Data: See attached Analysis Questions #1-10 1. Conditions that must remain constant in this experiment include the temperature of the water baths and the volume of peas and beads in the respirometers.
Darwin is often considered the father of evolutionary thought. Which of the following terms is/are not part of Darwin's analysis? a. Gene frequencies b. Natural selection c. Adaptation d. Fitness e. None of the choices apply Hint: Section 04.00
Part 2: The Effects of Temperature on Enzyme Activity In this experiment, the effects of temperature on peroxidase activity were determined by using a spectrophotometer to observe absorbance changes taking place in temperature treated samples containing potato extract, guaiacol, hydrogen peroxide, and pH 5 buffer. Hypotheses Ho: The temperature of solution does not influence the activity of an enzyme. Ha: The temperature of solution does influence the activity of an enzyme. Part 3: The Effects of pH on Enzyme Activity In this experiment, the effects of pH on peroxidase activity were determined by using a spectrophotometer to observe absorbance changes taking
When the average heart rate from the Control group, (151), is compared against the 3 average heart rates recorded from the three strengths of alcohol, (133, 109, 109), I interpreted that the heart rate is reduced at all alcohol strengths. My hypothesis for the Caffeine portion of the experiment was that at the introduction of caffeine to the water flea, as well as each stronger level of caffeine to its system, the water fleas heart rate would increase. When the average heart rate from the Control group, (176), is compared against the 3 average heart rates recorded from the three strengths of caffeine, (175, 173, 176), I interpreted that the heart rate is similar to both the control test, as well as with all alcohol strengths. I did not expect those results; I anticipated a higher heart rate. Were I to conduct this project again, I would find a more accurate way to measure the heartbeats, wait longer between applications of both alcohol and caffeine and wait longer after each application of alcohol or caffeine for it to take effect in the water fleas system.
1. Bacterial resistance to antibiotics 2. Comparative biochemistry 3. The fossil record ANSWER: A) max 7 pts The Big Picture: 1 pt- punctuated equilibrium, mass extinction, etc 1 pt- definition of evolution- change through time 1 pt- mutation- change in gene yields genetic variation 1 pt- natural selection/selective pressure (Darwin) 1 pt- genetic variation exists 1 pt- over production 1 pt- competition – survival of fittest (best genes) 1 pt- survivors reproduce (best
State the optimum pH for sucrase activity and describe how sucrase activity changes at more acidic and more alkaline pH values. See Table 2: Effect of Temperature on Sucrase Activity See Graph, Effect of Temperature on Sucrase Activity 2. Was the rate of increase of sucrase activity higher at a pH of 8.5 or a pH of 5.5? 3. State the optimum temperature for sucrase activity and describe how sucrase activity changes at lower and higher temperatures.
If Neanderthals ever walk the earth again, the primordial ooze from which they will rise is an emulsion of oil, water, and DNA capture beads engineered in the laboratory of 454 Life Sciences in Branford, Connecticut. Over the past 4 years those beads have been gathering tiny fragments of DNA from samples of dissolved organic materials, including pieces of Neanderthal bone. Genetic sequences have given paleoanthropologists a new line of evidence for testing ideas about the biology of our closest extinct relative. The first studies of Neanderthal DNA focused on the genetic sequences of mitochondria, the microscopic organelles that convert food to energy within cells. In 2005, however, 454 began a collaborative project with the Max Planck Institute
Why? The type of plant so that the rate of photosynthesis is roughly the same. The lengths of the shoot as longer shoots use more photosynthesis. The volume of hydrogen carbonate indicator using a measuring cylinder The same concentration of indicator by taking it from the same batch The same lamp to keep the source of light at the same intensity Bung on tube so it cannot gain Co2 from the atmosphere/ no influence What things might affect the rate of photosynthesis? Temperature Surface area of leaf Choose one to investigate and plan an investigation.