Bacteria Bacteria are the most common and ancient microorganisms on earth. Most bacteria are microscopic, measuring 1 micron in length. However, colonies of bacteria grown in a laboratory petri dish can be seen with the unaided eye. There are many divisions and classifications of bacteria that assist in identifying them. The first two types of bacteria are archaebacteria and eubacteria. Both groups have common ancestors dating to more than 3 billion years ago. Archaebacteria live in environments
Describe the structure and life processes of bacteria. Bacterial cells, like plant cells, are surrounded by a cell wall. However, bacterial cell walls are made up of polysaccharide chains linked to amino acids, while plant cell walls are made up of cellulose, which contains no amino acids. Many bacteria secrete a slimy capsule around the outside of the cell wall. The capsule provides additional protection for the cell. Many of the bacteria that cause diseases in animals are surrounded by a capsule
When one thinks of bacteria, what comes to mind? Bacteria are single celled organisms whose main objective in life is to gather nutrient and reproduce asexually. They just grow and divide. Humans have very interesting interactions with bacteria. In our bodies we have one trillion cells that make us who we are. Outside and inside our bodies, we have 10 trillion bacterial cells that help us (dietary functions like making vitamins, creating a barrier against foreign/bad bacteria, helping our immune
There are billions of other species and among those billions of species there is a few known as bacteria and protists. These microscopic living things are everywhere. They can be found in moist areas, suitable temperature and sometimes even when there is absolutely no sunlight. But of course these atomic organisms aren’t exactly the same. In fact they have many differences along with many similarities. Bacteria are single celled organisms that can be mostly found on most materials and surface. There are
Introduction There were three bacteria that were studied during this experiment. Staphylococcus is a type of bacteria that is often found on the body of human beings and animals. It is found on the skin and hair as well as in the noses and throats. Staphylococcus can cause food poisoning when it is exposed to food and contaminated because the food is not properly refrigerated. (Food Safety) These bacteria are Gram-positive with a spherical shape that often group into clusters, much like grapes
to its host. In order to get a Klebsiella infection one would have to be exposed to the bacteria; either by person to person contact, or by coming into contact with a contaminated piece of equipment in a healthcare setting. For example, patients may have been exposed to Klebsiella while they were on ventilators, or had intravenous catheters or open wounds resulting in bloodstream infections. After the bacteria have found its way into the body it can cause many different types of infections. Rarely
idea by explaining the current overuse and misuse of antibiotics and antimicrobial agents and how these affect bacteria and us. First, the video explained that viruses and bacteria can both make us sick but they are different. Viruses and bacteria cannot both be treated with antibiotics. Viruses need a host cell, are smaller, and unable to be treated with use of antibiotics. Bacteria are larger, independent living, have generation time of 20-30 minutes, and unlike viruses, many play an important
Part A: Bacteria vs. Virus Bacteria are known to have distinct structural characteristics and evolutionary lineage. Rods (bacilli) and cocci (spheres) are common bacterial shapes. In addition, bacteria may be comma-shaped (vibrio), spiral (spirillum and spirochetes), or filamentous; they may form buds and stalks; or they may have no characteristic shape (pleomorphic). Some cells remain together after division to form pairs, chains, and clusters of various sizes and shapes. Frequently observed
Hats off to bacteria! This article summarizes that bacteria are good for our body and help us function a lot better. Bacteria live in our guts, in our mouths, and on our skin. Overuse of antibiotics has disturbed the bacterial ecosystem, possibly so much that it is irreversible. In 1999 Lawrence Brandt a professor of medicine and surgery at the Albert Einstein College of medicine had success when trying to help a patient combat diarrhea induced by clostridium difficile. A patient developed diarrhea
Bacteria Facts Bacteria is something we are all reminded of on a daily basis by merely switching on our televisions where we are bombarded with advertisements for both ‘good’ and ‘bad’ bacteria contrary to the view of the past when only so-called ‘bad’ bacteria was ever talked about, so what has changed? This essay will address the facts about bacteria including their ideal conditions for growth as well as looking at specific examples of how they can be both helpful and harmful to humans