Microorganism

Therefore yeast and moulds spoil low pH foods such as fruits. [11] 2) Moisture Content Water is a very important factor in microbial growth, it is essential for microorganisms to grow in their preferable water content level. Different microorganisms need different water requirements which are described in terms of water activity (aw). e.g. yeast and moulds grow at aw of 0.80 and they grow at a higher range of aw than bacteria. [12]…

There were many tests performed on my unknown, which led me to conclude that the unknown microorganism is Pseudomonas fluorescens. When determining the gram reaction of the unknown, a Gram stain was done. This process differentiates between a Gram-positive and Gram-negative microorganism. This is done in four steps. The microorganism was stained with iodine, crystal violet, alcohol and acetone, and safranin. Iodine was used first as it acts as a mordant. It forms an insoluble complex by binding…

Blaser, is just piece of the issue. The other part is that antibiotics kills the awful microorganisms as well as great ones. Some of our great organisms may be critical for specific parts of our wellbeing. (Another element is that sure practices may keep us from gaining great organisms in any case, similar to C-sections keep the typical sort of…

Week 3 of lab, we received our unknown microorganisms. That week we performed a differential staining to determine whether our unknown has a gram-negative envelope which stains red or gram positive envelope which stains blue. Gram-negative microorganisms stain red because of their inability to bind crystal violet and their ability to bind the safranin. Gram-positive microorganism, however, stains blue due to their ability to retain the primary stain, crystal violet. I determined my unknown…

EA & JB 2 Identifying Neisseria sicca INTRODUCTION Bacteria are microorganisms constituting a large domain of prokaryote. They are typically a few micrometers in length and have a number of shapes ranging from spirals to rods and spheres. Bacteria are known to be among the first forms of life to appear on Earth, and are present in almost all habitats. They inhabit water, soil, radioactive waste, acidic hot springs, and Earth’s crust…

The study of microbiology requires not only understanding the microscopic organisms, but also the understanding of lab techniques and procedures used to identify, control, and manipulate microorganisms. The identification of microorganisms is not only important in microbiology lab, but also in the medical field to identify an agent of a disease that will help treat the patient by using the correct antibiotics to kill off the host. In this unknown lab report, techniques and procedures learned in…

where is can live and where is cannot. As well I will be talking about how curry and cinnamon affect bacteria. The first thing is what is bacteria. So, bacteria are good in many was as it is also bad, bacteria is a member of a large unicellular microorganisms that have cell walls but they lack organelles and an organized nucleus, including some that can cause disease. Bacteria is found everywhere, in the air, soil, water, and inside your body…

The purpose of this experiment was to determine the working concentration of Tetracycline (TNC) on Escherichia coli (EC). We used EC because of its characteristics of fast growth in different environments, complete gene sequence, and availability. Our antibiotic, TNC, is a broad spectrum antibiotic which is effective to many types of bacteria. This is because it obstructs tRNA anticodon from reading the mRNA codons in the 30S ribosomal subunit which halts the lengthening of the protein chain.…

Introduction The human body is populated by a large aggregate of microbes on the skin as well as many mucosal surfaces. They are composed of mainly bacteria, fungi, and protozoa. These commensal microorganisms live in the human body in symbiosis. Microbiota play a functional role in the health and disease of an individual. Roughly there are around 1012 bacteria found on the skin, primarily staphylococci and corynebacteria, and 1010 found in the mouth, primarily, streptococci, lactobacilli.1 But…

Bioterrorism” at the Medlink Conference at Nottingham University in 2014. I found this lecture really interesting, and left the Conference wanting to know more about microbiology. Studying Biology at A2 has led me to realise the incredible impact that microorganisms have on every aspect of our lives. I have had work experience in two hospitals and a GP practice, so have seen a wide variety of diseases caused by various microbes. I have also become more aware of the role that microbes play in…