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.…
In experiment one, involving the rate of respiration of germinated peas when exposed to a variety of different temperatures. From a general standpoint the data collected matched the hypothesis formed, as the temperature increases the rate of respiration will increase as well. This was shown as the average ppm of oxygen was taken from each group. Comparing the data from the class is shows the effect of human error on the results. For example group #4 seemed to have back wards results this may have been due to an improper seal on the oxygen sensor.…
Background information: The long thick fibers of DNA store the information for the function of the chemistry of life. DNA is present in every cell of plants and animals. The DNA found can be extracted using common, everyday material. We will use an extraction buffer containing salt, to break up protein chains that bind around the nucleic acids, and dish soap to dissolve the lipid (fat) part of the strawberry cell wall and nuclear membrane. This extraction buffer will help provide us access to the DNA inside the cells.…
The overall goal of experiment four was to determine the identity of unknown cations presented to the student. But in order to know the identity of these unknowns, in part 1, Ag+, Pb+, and Hg22+ were presented to the student in aqueous solutions and then precipitated through experimentation. In part 2, the same procedure was enacted to determine which substances precipitated through qualitative analysis. Solubility rules were also a major theme as solubility is important in determining whether a reaction will produce a precipitate.…
|Light Condition |Final pH |Water Movement (GROUP |Water Movement (CLASS |Photosynthesis Rate |Photosynthesis Rate |…
Before completing the lab I had the question whether which germinated or non germinated pea would consume more oxygen and from that question I made the hypothesis that if the garden pea has more water saturated in it than the other dry peas it would consume more oxygen because water is a key molecule in the facilitation of certain reaction and processes especially in cellular respiration. In conclusion, the lab demonstrated many critical things relating to cellular respiration. It showed that the rates of cellular respiration are greater in germinating peas than in non-germinating pea which does support my hypothesis. In another experiment I discovered about germinating peas vs non germinated peas showed similar results. The only difference…
For the test tube with the ratio of acetylene to air is 1:1, a flame traveled down a test tube, a slight pop and black residue was left…
1. The Respiratory exchange ratio is the ratio of the volume of carbon dioxide produced and oxygen consumed. The ratio indicates the energy that the subject is expending for indirect calorimetry, how efficient the subject 's body is at utilizing the oxygen inhaled, as well as the main substrate being used for energy during varying intensities of exercise. During rest the volume of carbon dioxide was 0.73L/min, the volume of oxygen was 0.84L/min. The RQ or RER was 0.87. Based on Table 5.1(Kenney,Wilmore, &Costill, 2012; Physiology of Sport and Exercise(5th ed.) The ratio indicates that roughly 68% of the kcal that the subject was using came from carbohydrates and the remaining 32% of the kcal came from fat. During the 50W stage the volume of carbon dioxide was 2.2L/min and the volume of oxygen was 2.9L/min. The RQ was 0.79, which indicates that the 33% of the kcal that the subject was using came from carbohydrates and that 67% of the kcal came from fat. In the 100W stage the volume of carbon dioxide was 4.08L/min and the volume of oxygen consumed was 4.1L/min. The RQ came out o be 0.99, the substrate being used was only carbohydrates at this point. The 200w stage had a carbon dioxide volume of 7.91L/min and a oxygen consumed volume of 6.51L/min. The RQ was 1.2 which indicates that the body is producing more carbon dioxide than the oxygen being consumed. The substrate being used for energy again is only carbohydrates.…
The purpose of this lab is to show how potential energy and kinetic energy is shown and transferred using a model rollercoaster. This lab also demonstrates the Law of Conservation of Energy.…
3 Watch each part of the experimental demonstration and make preditions about wht will happen in each scenario . Record your preditions and observations in the Data an Observations section of your labatory report format.…
For the group of students who rested first, the average clothespin squeezes per minute (cps/min) were 142, 172, and 190.42. Combined the overall average for this group was 168.14 cps/min.…
Lichens are a sybiotic association of fungus (mycobiont) and algae (Pediastrum boryanum . The fungus engulfs the algae, then supplies carbs, nitrogen, and vitamins while the algae photosynthesizes. This unusual relationship enables the lichen to grow in environments where neither fungus nor algae would normally be able to solely survive. They are found on every continent, ranging all the way from the freezing Arctic to the sweltering grasslands of Africa. Even though they can live in such extreme conditions, they do require clean air. This is why they are excellent environmental indicator. An indicator species is an organism whose presence or absence reflects the overall health of an environment. Lichens flourish where there is good air quality; however, they cannot survive where the air is polluted and toxins loom. This is because they have no stomata, or pores, to shut to keep the toxins out; therefore, absorbing all of the pollutants in the air. Because they are such unique organisms, they accumulate different metal anions in the air than other organisms, like plants do, for example. Lichens attract toxic metal ions. An ion is a charged atom. If the ion has a positive charge, it is a cation. An ion with a negative charge is an anion. During the ion exchange process, Hydrogen, an anion, is released and metal cations move in. This process occurs when lichens are exposed to polluted air. When the lichens are dropped into any of the metal solutions, their cell wall releases the methylene blue ions, which are replaced by metal cations. Upon their detachment, the ions integrate into the solution, which in turn, colors it blue. The darker the solution, the more metal cations taken in by the lichen. Valence is a measure of how much an atom wants to combine with something else. If the valence of a metal ion affects lichen uptake, then the higher the cation, the…
In the article “How Boys Become Men”, written by John Katz, he analyzes situations he experienced while growing up. Katz believes that boys become men by not showing fear or feelings and not ratting on others. As in the novel, The Other Wes Moore, both Weses are forced to become men at an early age. They experience events that push them to make decisions that make them grow and think like men do. Katz details the maturation process for boys, as the book, The Other Wes Moore, does with both Weses. They make decisions and take actions to mature and become a men.…
groups. It was conducted to further the research in choice overload and paralysis of the mind.…
Samsung’s latest flagship has been officially announced by the company. The Korean handset maker- Samsung is once again pushing its mini phone as a smaller yet well performing version of the current Galaxy S flagship, and thanks to the inclusion of features like a fingerprint scanner and heart rate monitoring sensor, that claim is actually worth something this time around. With a host of innovative features like water & dust resistance, ultra power saving mode and connectivity with the latest Samsung wearable devices, the Galaxy S5 Mini delivers a powerful performance that truly enhances your lives.…