Exploring Enzymes - Ground-Up Tissue Activity Abstract Our experiment looked at how increasing the surface area of a substance affects the amount of bubbles created due to the presence of the enzyme catalase. The experiment used two pieces of fish‚ one whole and one ground up‚ which were then covered in hydrogen peroxide. This method allowed us to observe the catalase in ground up fish break down the hydrogen peroxide at a quicker rate than in the piece of fish left intact. This was determined
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approximately two to three years. In this lab Isopods were examined by their different types of behavior. The experiment began with observing the Isopods and then‚ moving on to how they’d react to having a side of moisture in their double-sided dry petri dish. In the independent experiment‚ a side of light and dark was set up to test how the Isopod’s behavior would be effected by having a side of darkness versus being exposed to the artificial light in the classroom. It was hypothesized
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Determination of an Electrochemical Series In electrochemistry‚ a voltaic cell is a specially prepared system in which an oxidation-reduction reaction occurs spontaneously. This spontaneous reaction produces an easily measured electrical potential which has a positive value. Voltaic cells have a variety of uses and you commonly refer to them as a “battery”. Half-cells are normally produced by placing a piece of metal into a solution containing a cation of the metal (e.g.‚ Cu metal in a solution
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Reactions Safety Reminder: Wear safety glasses and conduct experiment in a well-ventilated area. Day 1 Materials: Part I: steel wool (HEB‚ Target‚ Lowe’s‚ Home Depot) You can also try SOS pads. tweezers vinegar test tube (in your kit) water petri dish (in your kit) Part II: hydrogen peroxide small pieces of raw potato (yeast or beef liver may be substituted for the potato) small bowl Procedures: Part I: Reaction between iron and oxygen 1. Break off a small piece of steel wool and soak it
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constructed the noise cancelling compartment out by cutting the padding in order to hold a petri dish. I cut three whole in the padding and layered four pads to leave the empty space in the middle. I placed the plywood panels on the top and bottom and secured the bottom and left the top unsecured for access. I made 2 liters of agar and poured it evenly into 12 petridishes with an area of 18.096 cm2. Each Petri dish was inoculated with an inoculation tube using sanitation methods and intending to
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Group: rain water the copper is exposed to Materials 12 strips of copper pH meter (+ 0.01) Digital scale (+ 0.01) graduated cylinder (±0.05 mL) experimental setup diagram 60mL of rain water 60mL of 0.5 M HNO3 60mL of 1.0 M HNO3 60mL of 1.5 M HNO3 4 petri dishes Experimental Process 1.
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Materials: For week 1 and week 2 the following materials were used: 10 grams of fresh leaves (rose)‚ sandwich-type plastic bag‚ a scale‚ a blender‚ 100 mL of distilled water‚ folded cheesecloth‚ a funnel‚ one stock bottle‚ 3 pieces of filter paper‚ two Petri dishes‚ and 40 radish seeds. Methods: According to the Topics in Biology Laboratory Manuel‚ the experiment was conducted as follows: First we needed to collect fresh leaves from one plant species‚ and fill up a plastic sandwich bag‚ which we were
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the individual projects that will be done at the end of the semester. Materials and Methods: The lab chosen was Exercise 24: Isolation of Bacteria in our Physical Environment. For this lab‚ four TSA Petri plates‚ a test tube of sterile water‚ and sterile cotton swabs were obtained. The Petri plates were labeled 1-4. Plate number 1 was left on the lab bench for the duration of class. It was labeled “air sample”. Plate number 2 was divided in half‚ side 1 contained the steering wheel sample
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Toxicology Lab 1. In this investigation‚ a wide range of concentrations of Sodium Chloride (NaCl) solution were created and the effects that they had on radish seeds were tested. This ultimately created a doseresponse experiment in which it was detectable whether or not radish seeds were a reliable bioassay for the toxicity of NaCl. The goal of this experiment was to determine a correlation between toxicity and seed germination/radicle
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autosomal. To begin the lab‚ one must acquire a sample of flies to cross. These flies should be placed in a tube with an easily removable foam stopper. Use the flynap to knock out the fruit flies‚ and pour them out of the tube into a petri dish. Then place the petri dish on a stereomicroscope‚ and begin using a paintbrush to sort the flies by gender. Male flies have sex combs on their forelegs‚ and are usually smaller than the female flies. The females have pointed posteriors‚ do not have sex combs
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