Tn 4351 was originally isolated from bacteroides fragilis [30] . The transposon was successfully introduced into Cytophaga succinicans, Flavobacterium meningosepticum, Flexibacter canadiansis, Flexibacter strain SFI and Sporocytophaga myxococcoides by conjugation [25]. Tn 4351carries two antibiotic resistance gene. One of the codes for resistance to erythromycin and clindamycin which is expressed in bactroides but not in E.Coli. The other gene codes for resistance in tetracycline and is expressed in aerobically grpwn E. coli, but not in anaerobically grpwn E. coli or in bacteroides.
In this experiment, dehydration and dehydrobromination
Adrian Molina December 1, 2015 Biology Lab The Affect of Cigarette Extract on Food Vacuole Introduction a. background Tetrahymena are Single celled cicilated protists, which are known to tolerate a diverse range of environments. Tetrahymena are often used in experiments because they are easy to culture and have similar life processes as multicellular organisms. Tetrahymena is covered with short hair-like projections or cilia, that sweep food particles into its oral groove.
Next, the test tubes were carefully cleaned with soap and water. Then five millilitres of sample “A” was placed in the test tube labeled “A”. This was then repeated with the next three samples. Then a few drops of each sample were placed on glucose/ketone paper. Each piece of glucose/ketone paper (with the sample on top) was compared to the label on the glucose paper bottle.
Conclusion: Based on the results of molarity from Trials 1, 2, and 3, it is concluded that our experimental for each trial is .410M NaOH, .410M NaOH, and .450M NaOH. The actual molarity of the NaOH concentration used was found to be 1.5M NaOH. The percent error of the results resulted in 72%. The large error may have occurred due to over titration of the NaOH, as the color of the solution in the flask was a darker pink in comparison for the needed faint pink. Discussion of Theory:
The hypothesis that the scientist will be testing is that alka seltzer tablets with smaller particles will react faster than tablets with larger particles. This would happen because the water would not have to break down the tablets as much as it would with the tablets with larger particles. Without having to break down the tablet, the water could begin reacting immediately with the tablets having smaller particle size. The scientist will do this by placing tablets of alka seltzer, each with different particle sizes, into water, and measuring the
Since unknown organism B was gram positive, I had decided my first biochemical test would be the Catalase test per lab manual. The result of the catalase test after adding H2O2 was immediate air bubbles. The second biochemical test performed on organism B was starch agar per lab manual. Once the reagent was added I did not
Emma Rosandich Mahziar Sakiani Period 1 Bubble Lab Report Background Research: Bubbles are basically a very thin film of soapy water that is enclosing air that forms a hollow sphere with an iridescent surface. The surface of water in made of hundreds of molecules that stick tightly together because of intermolecular forces and surface tension. Surface tension helps the bubble keep its shape. Soap molecules have two ends- one end that sticks to water, and the other that is repelled by water. Bubbles are round because they are ‘minimal surface structures’, which means that bubbles hold the least possible surface area they can.
Another proven false confession, Wayne and Sharmon Stock were found shot to death in an upstairs bedroom in April 17, 2006. Police had no leads, so they focused the investigation toward the family. More than a few family member suggested that Matthew Livers a 29 year-old, had a tough relationship with his Uncle Wayne and wasn’t much liked by his Aunt Sharmon. Authorities also connected Livers cousin Nicholas Sampson a 28 year-old with first-degree murder. During Livers interrogation by investigators from the Cass County Sheriff’s Office and Nebraska State Patrol for nearly 11 hour without a lawyer, put a lot of pressure towards Matthew to give the detective what they wanted.
Mystery Tube Purpose: In the Mystery Tube Lab, we were challenged to figure out what was going on inside the tube, figuring out how the strings were connected to one another inside that made them move in a certain way. Prediction: Our hypothesis was that there are three pieces of rope inside the tube, all being connected in a way that if one was pulled, the rest moves.
At the surface of the water was a thin layer of orange material 5 Signs of Oxidation at the top and bottom of the test tube The top and the bottom of the nail turned orange At the surface of the water was a thin layer of orange material 7 Signs of Oxidation at the top and bottom of the test tube The nail darkened and left some black residue on nail 9 Clear & No Signs of
H20 + 2 O2 This experiment will use 1% catalase solution and 3% hydrogen peroxide solution, both diluted into water so the reaction slows down. Temperature will be controlled in this experiment to change the reaction speed of the enzyme and the substrate, this is what the experiment is looking at. The effect of the temperature will be determined by how much gas is released in two minutes, which will change the pressure inside the test tube and will be measured by a gas
Definition of Liver Cirrhosis Cirrhosis is a complication of many liver diseases characterized by abnormal structure and function of the liver. The diseases that lead to cirrhosis do so because they injure and kill liver cells, after which the inflammation and repair that is associated with the dying liver cells causes scar tissue to form. The liver cells that do not die multiply in an attempt to replace the cells that have died. This results in clusters of newly-formed liver cells within the scar tissue. There are many causes of cirrhosis including chemicals (such as alcohol, fat, and certain medications), viruses toxic metals (such as iron and copper that accumulate in the liver as a result of genetic diseases).
5 water bath were set up each to10 °C. (5 were used do the experiment faster) 5 cm3 of starch solution were added into the 5 test tubes that were labeled test tubes. Then 5 cm3 of amylase enzyme was added into the other 5 test tubes that were labeled. Put one of the starch solution test tube (preferably the one labeled 1) and one of the test tube containing amylase into the water bath (10 °C).
LIVER ANATOMY AND PHYSIOLOGY The liver is located in the region of the right upper quadrant of the abdomen (usually does not exceed the limit of the costal margin), filling the space of the diaphragmatic dome, where it can reach up to the fifth rib, and is related to the heart through the center phrenic, to the left of the inferior vena cava. It is usually soft and palpable, and is covered by a fibrous capsule. This fibrous capsule applies peritoneum mainsail liver surface (except liver bare area). Is divided into four lobes macroscopically: 1.
