salmonella bacteria can life for a semi-long period outside a host body -once salmonella has entered the body (through contaminated foods or coming in contact with infected feces) the bacteria will begin to grow R -salmonella reproduces asexually through binary fission Binary fission- subdivision of a cell ‚ single stranded DNA replicates then attaches to opposite ends of the cell and then the cell pulls part -Through reproduction‚ two identical cells are formed from the original bacteria -Reproduction
Premium Bacteria
of two different topical chemicals on growing bacteria over the course of a week. Bleach‚ water‚ hand sanitizer and hand soap were all variables used to observe the effects of the bacteria swabbed from my palm and fingers. Bleach has been the go to product for killing germs and it is because of the similar effects it has with high temperature on the proteins in bacteria. I hypothesized that bleach would be the most efficient way for killing the bacteria over hand sanitizer and hand soap. Methods I
Premium Bacteria Microbiology Antibiotic resistance
serve us well.There are a number of reasons why not all microbes are bad for people. Bacteria can help the garbage to decompose‚ they are produced in medicines to help fight harmful infections and they benefit the taste of food. Microbes‚ or “microscopic organisms‚” are tiny forms of life that surround us and are too small to be seen with your eyes. To be able to see microbes we need to use a microscope. Bacteria are classified and identified to distinguish one organism from another and to group similar
Premium Bacteria Microorganism Organism
what an unknown bacteria was using several different microbiology lab techniques including an API test‚ an oxidase test‚ a gram stain‚ a hanging drop slide‚ and morphology identification. The unknown bacterium‚ which was contaminated with Serratia marcescens‚ was isolated by streaking the bacteria solution to single colonies. The isolated unknown white bacteria‚ had the appearance of circular form‚ convex elevation‚ entire margin‚ elongated cocci. The tests than showed that the bacteria was gram-negative
Premium Microbiology Bacteria Gram staining
The Relation of Antiseptics and Bacteria Growth Purpose: To explore the effectiveness of different levels of concentration of antiseptic and antibacterial products’ prevention of bacterial growth. Question: Amongst common household products‚ which antiseptic and level of concentration is more effective at inhibiting the growth of bacteria? Introduction: Antiseptics are antimicrobial substances used on living tissue to reduce the possibility of infection‚ putrefaction or sepsis. The word “anti”
Premium Bacteria Immune system
is effective for single cell organisms. Example: Glycolysis. Antibiotic resistance: Resistance of a microorganism to survive through the exposure of an antibiotic. Resistance is generally due to a genetic mutation of a bacteria‚ or evolutionary stress. A bacteria with many resistance genes may be referred to a superbug‚ or super bacterium. Archaea: Single celled organisms‚ who are a part of 1/3 domains of life. Contains no nucleus or organelles. Can survive in extreme conditions
Premium Bacteria
keep other things the same‚ for example the washing time had to be the same for both‚ you called the washing time a _Control_______ variable. Through the semester‚ you have used two bacteria that produce colorful colonies: one produce yellow colonies‚ another one pink. What are the names of these two bacteria? Are they Gram+ or Gram-? Micrococcus Luteus‚ yellow colonies‚ gram + Serratia Marcescens‚ pink colonies‚ gram - There was one bacterial
Premium Bacteria Experiment Chemistry
detect if the bacteria contains any deoxyribonuclease activity. Because no color change was observed from blue to clear my unknown bacteria displayed a negative result. Blood agar plate This test is used to detect the hemolytic activity in the bacteria. A darkish green color on the media around the bacteria would represent incomplete hemolysis. A transparent media around the bacteria colony represents complete lysis of the red blood cells. If no change is observed around the bacteria colony then
Premium Bacteria Gram staining Staining
Did you know‚ food poisoning has increased dramatically in the last ten years? This makes it much more important for vigilance by food businesses. Since 1965 the cases of food-borne illness has increased from 20‚000 to just short of 100‚000 now. There has been no single reason identified to why this number has increased‚ but this could be because of: Changes in eating habits‚ a greater reliance on re-heated food. Eating out is much more popular now‚ so more people are aware of food hygiene‚ therefore
Premium Bacteria Foodborne illness Food safety
gradient). Clostridium and other anaerobic bacteria dominate under anaerobic conditions at the bottom. Cellulose from the paper into glucose and that would be a trigger for the bacteria (Clostridium) to take in the glucose and partially break it down by fermentation to gain energy and to produce ethanol and organic acids as by-products. The by-products from Clostridium feed into other bacteria nearby in the deep mud of the column. Desulfovibrio bacteria use these organic molecules as carbon sources
Premium Photosynthesis Oxygen Bacteria