In the lab with germinated and dry peas along with glass beads, determining the rate of respiration in each different type of seed was the goal. The hypothesis stated that since the germinated peas were still alive, they would contain a higher rate of respiration needed to remain healthy compared to the dried peas and glass beads.…
Experiment M1 was designed to familiarize us with how to take measurements with motion sensors, inferring graph such as time vs velocity and time vs position, and differentiating random and systematic error in an experiment. During activity 1 we begun by standing in front of motion sensor at a distance of 1.2 meters and varied our distance by 0.6 meters over the course of 25 seconds. This activity presented us with a position vs time graph that we were supposed to replicate to our best ability. For activity 2 we are given a position vs time to replicate and after replication a velocity vs time graph is created below. The graph showed that, though the position raises, evens out, and then returns to initial position; the velocity spiked positively, dropped negatively, and then evened out. During activity 3 we discussed the terms average value, random errors, systematic errors, accuracy, precision, and standard deviation. Using the equations provided in the text, we are able to calculate the average value and the standard deviation using the average value of both trails. After both calculations on each trial we were able to come to the conclusion that, increasing the range of results ultimately increased the standard deviation and random errors. The increase in standard deviation and random error lowered the accuracy of the trial. Theoretically, by closing our eyes in trial two there should have be an increase in standard deviation, random error, and a lower accuracy; in our results however, the second trial had a .000044 lower standard…
In our experiment we conducted an experiment to validify our hypothesis: “ If the enzyme concentration increases, it would alter the rate of which the color changes.” We hypothesized that the increase of an enzyme concentration would result in the increase of reaction rate; our experiment provided enough data to prove our hypothesis. The function of this experiment was to investigate how the influence of turnip peroxidase enzyme on the rate of reaction. As a given we would have 20g of turnip in 500 mL of deionized water. We would have a three different trials and in those trials we would do it three times.…
In the electron transport chain there is a final hydrogen acceptor which is oxygen in an aerobic respiration. A by-product of this respiration is oxygen which is used to form H2O. All the reactants that are needed for this reaction are oxygen, substrates of phosphorylation, and glucose. This will produce ATP, water, and carbon dioxide. To find respiration in a organism people may measure the amount of carbon dioxide released, the amount of glucose used, or the amount of oxygen consumed. The experiment will be to incubate the mung beans seeds in one of two treatments of temperatures, measure respiration, and take down data of the amount of oxygen taken in by the seeds during the incubation time.…
Due to the control, non germinating peas/beans are releasing less CO2 ppm than the 24 hour and 48 hour germinating peas/beans. This can be seen when the control from 0-5 minutes was at -76 ppm, while the 24 hour beans were at +374 ppm. The alaskan peas also saw this same type of pattern from 0-5 minutes. The control for the peas was at -176 ppm and the germinating peas were at +1,056 ppm. Since this lab was conducted with precision, and the sensors were not broken, or tampered with before, during or after the experiment, this data is accurate which leads to precise…
The aim of this experiment was to find the favoured temperature for types of micro-organisms to grow. The hypothesis was sort of rejected in this experiment as our rule of thumb didn’t add up to the results we got. If we could make our results more accurate, we could have supported our hypothesis but as the results were inaccurate, we could not prove that our hypothesis was correct. Overall this experiment went well even though there were some difficulties and problems that occurred which altered our…
In completing the Tomato Plant experiment I had to apply the scientific method. I observed that my tomato plants were producing less fruit each year. I then questioned some of the elements that may have affected the tomato plants and caused them to bear fewer tomatoes being a deficiency in warmth, water, or nutrients. I then selected my hypotheses that the plants were in need of more nutrients. Following my hypothesis I developed my prediction which was that my plants would bear more tomatoes if I was to replace the old soil with new soil before planting. I then concluded, based off of the graph depicting the number of tomatoes per plant, that my hypothesis was supported because; my predication was accurate and the plants grew more tomatoes after I had replaced the soil.…
We conducted this lab in order to determine the relationship between gas production and the cellular respiration rate between germinating peas and dormant peas. Cellular respiration is the procedure of changing the chemical energy of organic molecules into a form of energy that can be used by cells called ATP (adenosine tri-phosphate).…
The objective of this lab was to figure out which has a higher cell respiration rate between crayfish and elodea. In order to figure this out we first set up three beakers to represent our control, elodea and crayfish and filled them with 75mL of culture solution which were dechlorinated making the solution acidic. We then had to place both the elodea and the crayfish in separate beakers filled with 25mL of water. The increase in volume of the water would represent the volume of the two test subjects. We then covered each beaker with plastic, but for the elodea we placed it under a can so it could be in the dark. After waiting 15 minutes to allow them to respire we took it out and add four drops of phenolphthalein, which was also acidic, to both beakers. Once both beakers got their four drops we added drops of NaOH, which was a base, until the solution turned pink. Our results were that the respiration rate of the crayfish was higher than the elodea.…
The purpose of this experiment is to design and conduct a basic scientific experiment, identify and control variables. Some other objectives that we learned is to write a formal hypothesis, identify the basic and integrated process skills of science that were used in this experiment. Also, we will learned the effects of temperature on goldfish respiration. This experiment will be conducted with four students , one goldfish, thermometer, a stop watch, and a beaker. Our results showed that the fish temperature increased and the fish breathing slowed down.…
The purpose of the first experiment was to practice obtaining accurate and precise results by doing…
Structured questions 11 The apparatus below is a simple respirometer. Some students in a CAPE™ Biology class used it to determine the rate of oxygen uptake by germinating mung beans. coloured water a b c d capillary tube meniscus attached graph paper or ruler soda lime Explain how the apparatus shown in the diagram can be used to measure the rate of oxygen uptake in mm3 min−1 g−1. Apart from lack of a control, describe two other limitations of the procedure described in a. Describe a control which should be set up to obtain valid results. The results in the table below were obtained by the students when measuring the uptake of oxygen by the mung beans.…
This hypothesis should have been proven true with the experiment, but due to some error the iced liver had the greatest rate of O2 production. Things that could have affected the rate of reaction could include: the iced liver being left in room temperature conditions too long before beginning the experiment, accidental added motion from moving the test tube during the reaction causing molecular collision to occur more frequently increasing the rate of the reaction. Then the hypothesis regarding the pH experiment stated, the enzymes found in pH 3 and pH 10 will have little activity and 7 should show the greatest activity, because our bodies function around a pH of 7. This was proven true, because during experiment the pH of 7 performed the best. The final hypothesis stated, the used iced liver brought back to room temperature will have a similar O2 production to the room temperature liver because enzymes are reusable.…
3.Describe and explain the relationship between the amount of oxygen consumed and time? The amount of oxygen consumed was greatest in germinating peas in warm water. The oxygen consumption increased over time in germinating peas.…
As we finished our project we concluded that the cheeto puff has more calories since it produced more energy when it was lit. According to our lab we can say that the cheeto puff had “2.548 Calories (kcal)/ 1g of Cheese puff,” thus a frito had “1.28 Calories (kcal)/ 1g frito” therefore the cheeto puff had more calories. We did not have the same data as our classmates, however, we did have the same data as someone else in another period. I think the reason why we did not have the same data as our classmates was because we all had different experiments and we all had a variety of different experimental errors. Another reason why we did not have the same data was because everyone’s procedures were different.…