1-Naphthaleneacetic acid

starch. First, using separate medicine droppers, I transferred 3 ml of starch solution to a small beaker, then added a fresh enzyme solution consisting of a pinch of amylase in a 3ml of water and mixed thoroughly with a glass rod. Secondly, I waited for 1 min…

Practical 3: Enzyme Activity (2.5) Research Question: How does the change of pH affect the rate of decomposition of hydrogen peroxide on the enzyme, catalase? Background Information: Enzymes are globular proteins, which are synthesised by cells in order to perform specific functions. These act as catalysts in chemical reactions and are considered a major factor in an organism as these reaction rates are required to be shortened in order to support life. Catalase is one of the most…

In this lab we wanted to identify what the four mystery liquids were using density and their characteristic properties. We were initially given four liquids that were labelled numbers 1- 4, some graduated cylinders, and a scale, but we also knew that the 4 liquids were ethanol, vegetable oil, water, and cyclohexane. Using the mass that we found when we measured the liquid and using only 10 mL of the liquids we were able to calculate the density and easily identify the liquids and see if they…

In our experiment we evaluated which liquid yeast would produce gas the fastest by measuring how long it took for certain liquids to inflate a balloon. We hypothesized that if the yeast and sugar were placed in a warm,sugary environment like apple juice, then the yeast will produce more CO2 and cause the balloon to inflate faster. The control was the room temperature Throughout the experiment the type of balloons, size of the erlenmeyer flasks, amount of yeast, volume of each liquid, and the…

Sowbug Experiment Introduction A sowbug is an isopod that belongs to the Classic Crustacea family. They live in damp, wet, dark environments and are commonly nocturnal. They are mostly found under rocks, rotting tree bark, or logs in moist, dark areas outside. Through the observational study I observed that the sowbugs most often moved towards the edges and buried themselves, they moved quickly, and they mostly stayed and/or ended up on the damp-dark soil rather than the dry-light sand. Based…

seconds-1. The 0.1 v/v % hydrogen peroxide concentration recorded a reaction rate of 0.17 seconds-1. The 0.2 v/v % hydrogen peroxide concentration, recorded a lower reaction rate than the 0.1 v/v% at 0.14 seconds-1. The 1 v/v % hydrogen peroxide concentration recorded higher at 0.49 seconds-1. The 3 v/v % hydrogen peroxide concentration recorded the highest reaction rate at 1.57 seconds-1. The 5 v/v % hydrogen peroxide concentration recorded a lower reaction rate than the 3 v/v % at 1.00…

The purpose of this experiment was to be able to identify certain substances that the Armadillidium vulgare is attracted to or would be likely to move towards. The substances were three different liquids and three different solids. Another purpose of the lab was to learn the characteristics of an Armadillidium vulgare also known as a pillbug (Mader, 2013). The main topic was based on whether the pillbug would be attracted to certain substances, and the reason they’re attracted to it. The pillbug…

Table 1: Water Observations (Smell, Color, Etc.) Beaker Observation 1 No smell and clear 2 No smell, oil and water don’t mix oil on top of water,look hazy 3 Little odor/can not determinethe clearnes 4 Slightly hazy/bubbles on top/no smell 5 The water is brown/no smell 6 Water is still brown/hazy no smell 7 Water brown/hazy/loud smell 8 Brown water/bubbles in soil Expriment 2- We compared and contrasted flitered water and comtaminated water. The contaminated water was brownish and had a loud…

In this experiment method and all of the materials remained the same except for the replacement 4ml of catalase with 4ml of room temperature distilled water. Table 1 shows that the volume of oxygen released/ produced is much greater when catalase is involved in the equation. Although, even without catalase, pH 7 is still the optimal level. The results we arrived at fit into the big picture by showing that pH does…

When properly installed, the chlorinator is the last thing your pool water passes through before being returned to the pool. Periodically, you will need to fill the chlorinator with chlorine tablets. You then set the dial on the chlorinator to between 1 and 3 ppm. The chlorinator regulates the amount of chlorine in your pool, adding…