is conducted to identify the bacteria as gram negative or gram positive. Two other stains were carried out. To determine the motility of the bacterium‚ wet mounts of the bacterium were observed and the motility was confirmed by using soft agar plates and soft agar deeps for
Premium Enzyme Gram staining Bacteria
As community succession occurs in bacterial colonies pH‚ odor‚ color‚ and consistency changes take place. In this experiment‚ four different milk age samples‚ fresh‚ 24 hour old‚ 4 day old‚ and 8 day old milk‚ will be prepared on different sets of agar plates that will be diluted to different levels for optimum bacterial growth and measurement. To identify the resulting colonies a procedure called gram stain is used in the identification of bacteria. Bacteria can be gram-positive‚ gram-negative
Premium Bacteria
same temperature and to make sure it is not too hot to kill the bacteria and not too cold to prevent the solution from combining. Amount of bacteria used on each agar dish. This is to make sure that no brand of detergent is either more advantaged or disadvantaged than the other in its ability to kill the bacteria. Amount of time each agar dish spent in incubation and the temperature of the incubator. To ensure the bacteria has an equal chance of growing within the same timeframe. Materials 4 beakers
Premium Water Mathematics Experiment
ABSTRACT The effect of molecular weight on the rate of diffusion was measured using two tests namely: the glass tube test and the agar-water test. The set-up of the glass tube test used two cotton balls of the same size. One cotton ball is moistened with hydrochloric acid (HCl) and the other one is moistened with ammonium hydroxide (NH4OH). The two cotton balls were inserted in both ends of the glass tube. NH4OH which has a lighter molecular weight (35.0459 g/mole) diffused with a faster rate (dave=20
Premium Ammonia Molecular diffusion
(RESEARCH TREATISE) By SITUMBEKO LIWELEYA (s213459531) Submitted in fulfilment of the requirements for the degree of BACHALOROUS TECHNOLOGIEA: BIOMEDICAL TECHNOLOGY At the At Nelson Mandela Metropolitan University Port Elizabeth‚ 2013. SUPERVISOR- PROFESSOR SMITH. N. DECLARATION I‚ the undersigned‚ hereby declare that the research work contained in this study is my own original work‚ and all the sources I have used or quoted have been indicated and acknowledged
Premium Antibiotic resistance Bacteria Microbiology
• Eye protection • 250 mL beaker • Timing device • Scoopula • Ruler • Scalpel • Sodium hydroxide solution • 3 different sized cubes of phenolphthalein agar • Paper towels Purpose 1. Put on eye protection 2. With the scalpel cut the block of phenolphthalein agar in to a 1x1x1 cm cube (Cube A)‚ a 2x2x2 cm cube (Cube B) and a 3x3x3 cm cube (Cube C). 3. Pour enough sodium hydroxide solution in to the beaker to cover the
Premium Chemistry Diffusion Osmosis
the glass tube test and the agar-water gel test. In the glass tube set-up‚ two cotton plugs soaked in two different substances (HCl and NH4OH) were inserted into the two ends of the glass tube. The substance with the lighter molecular weight value (NH4OH‚ M = 35.0459 g/mole) diffused at a faster rate (dAve = 25.8cm)‚ resulting in the formation of a white ring around the glass closer to the side of the heavier substance (HCl‚ M = 36.4611 g/mole; dAve = 10.8 cm). The agar-water gel set up was composed
Premium Molecular diffusion Hydrochloric acid Ammonia
Harley−Prescott: Laboratory Exercises in Microbiology‚ Fifth Edition Front Matter Preface © The McGraw−Hill Companies‚ 2002 PREFACE Take interest‚ I implore you‚ in those sacred dwellings which one designates by the expressive term: laboratories. Demand that they be multiplied‚ that they be adorned. These are the temples of the future—temples of well-being and of happiness. There it is that humanity grows greater‚ stronger‚ better. Louis Pasteur (French chemist‚ founder of microbiology
Premium Microscope Microbiology Microorganism
INTRODUCTION Cassia fistula Linn. (Leguminosae) is a very common plant and is widely known for its medicinal properties. In the Indian literature‚ this plant has been described to be useful against skin diseases‚ liver troubles‚ tuberculous glands and its use in the treatment of rheumatism‚ hematemesis‚ pruritus‚ leucoderma‚ and diabetes.[1‚2] Besides‚ it has been found to exhibit anti-inflammatory and hypoglycemic activity and widely used as a mild laxative suitable for children and pregnant women
Premium Solvent Solvent Bacteria
the 2 tests: the glass tube setup and the water agar-gel setup. In the glass tube setup‚ two cotton balls were soaked in the solutions of hydrochloric acid (HCl) and ammonium hydroxide (NH4OH) and were simultaneously placed on both ends of the tubing.NH4OH had a lighter molecular weight of 35 g/mole which diffused at a faster rate of 24.8 cm and formed a white smoke near the HCl end that had the molecular weight of 36 g/mole. The water agar-gel setup was made up of a petri dish containing
Premium Ammonia Hydrochloric acid Molecular diffusion