Enzymes are catalytic proteins that speed up chemical reactions by lowering the activation energy of the reaction. our body cells depend highly on enzymes to complete many important functions‚ such as digestion and metabolism. Enzymes are selective‚ in which each enzyme can only speed up a specific reaction. There are molecules that enzymes work with called substrates. substrate bind to an area of an enzyme called active site. There is specificity between the enzyme and substrate that react with
Premium
Presence of Alu element within PV92 on chromosome 18 in a mixed ethnical population and its connection with humans’ ancestral origins By Shiyu Song Biology 155Q LAB-A: 14:30-17:30 Dr. Jacob April 17th 2013 Abstract The Alu insertion (+) within PV92 on chromosome 16 usually reflects a person’s ancestral origin. This study aimed to find the correlation between the presences of Alu insertion (+) within PV92 on chromosome 16 within a population. We used PCR to detect the Alu insertions
Premium Genetics DNA Gene
Name : Siti Zulaikha Binti Dahalan Matric. No : FIS 1307 3296 Name of Partner : Title of Experiment : Experiment 2‚ Uncertainty and Error Date Of Experiment : 1st October 2013 Course Name and Code : Physics Lab 1 (FP1021) Instructor’s name : Dr. Azah Nik Jaafar Objective 1. To measure Human Reaction Time 2. To find uncertainty and error of a measurement Apparatus 1. Ruler Theory Human Reaction Time is a measure of how quickly human can respond to a particular stimulus. This
Premium Measurement
Science Lab on Electromagnets By Caitlin Hendriks Factors that Affect the Strength of an Electromagnet Purpose: To test how two different factors‚ the number of loops and the current intensity‚ affect the strength of the magnetic field of an electromagnet. Materials: Power pack‚ 4 connecting wires‚ switch‚ ammeter‚ paperclips‚ iron nail‚ copper wire. PART A: TESTING THE NUMBER OF LOOPS Procedure: 1. Create an
Premium Mathematics Magnetic field Average
Labs and Diagnostics Colonoscopy This test allows direct visualization of the small bowel‚ rectum‚ and colon. It is recommended for patients who have experienced fecal occult blood or obvious blood in the stool. It is also recommended for patients who have experienced a change in bowel habits or are experiencing abdominal pain. In patients who have had colorectal cancer‚ polyposis‚ or inflammatory bowel disease it is used to observe for continued progression of their condition. During the procedure
Premium Colorectal cancer Ulcerative colitis Crohn's disease
Medical Sciences. Wiley‚ Chichester. APPENDIX- Safety Assessment 1. General Aspects Gloves must be worn at all times to protect from pigment staining. Safety glasses must also be worn throughout the lab to protect the eyes from chemicals. Potential injury may arise from razor blades and cork borers. Lab coats must be fully fastened to protect clothes from staining. 2. Chemical Hazards The solvents (acetone and methanol) should not be inhaled as it can cause damage to mucous membranes. They can also
Premium Cell membrane Cell Protein
Title : Measuremnt of pH With Indicators Aim : 1.To investigate concentration of hydrogen ions in hydrochloric acic and colour changes of indicators 2.To determine standard solutions and the unknowns Variables Independent variable : Concentration of hydrogen ions in hydrochloric acid.The presence of hydrogen ions is varied by using 5 different concentration of hydrochloric acid of 0.1mol/L‚0.01mol/L‚0.001mol/L‚0.0001mol/L‚0.0000mol/L Dependent variable : Colour changes of indicators
Free PH Hydrochloric acid PH indicator
In fermentation the pyruvate is converted into ethyl alcohol‚ through the oxidation of the 2 NADH molecules‚ which returns them to two NAD+’s (Freeman‚ 2011). Oxidation is the loss of an electron in this case H+. We used information from previous labs in which we tested
Premium Ethanol Yeast Carbon dioxide
Hypothesis: The closer the light is the plant‚ and the higher the wattage of the light‚ the faster the rate of Photosynthesis. So‚ the 150 watt light bulb at 5centimeters will have the highest rate of photosynthesis. Results: Photosynthesis Lab Data Number of Watts Light 5cm Away Light 10cm Away Light 15cm Away 50 9 bubbles 10 bubbles 15 bubbles 60 14 bubbles 8 bubbles 11 bubbles 65 6 bubbles 5 bubbles 4 bubbles 2 bubbles 3 bubbles 5 bubbles 150 36 bubbles 16 bubbles 5 bubbles 40 bubbles
Premium Carbon dioxide Photosynthesis Oxygen
iron powder. Para-aminophenol crystallises out from the mother liquid which is subsequently centrifuged. Para-aminophenyl crystal is then reacted with acetic anhydride to produce pure paracetamol. The reactions are summarised as shown below: Lab scale manufacture Paracetamol can be easily prepared in the laboratory using phenol. Phenol reacts with sodium nitrate and separate para nitro phenol from outho nitro phenol. Then para nitro phenol is converted into para amino phenol using sodium
Premium Aspirin Paracetamol Ibuprofen