TASK 1 (P1) BACTERIA A) Labelled B) Bacteria is a single cell organism. They do not have a nucleus and are prokaryotic cells. Bacteria are simpler structures with no membrane bound organelles. A bacteria has a cell wall, plasma membrane, pilus, DNA, capsule and ribosomes. C) The average size of a bacteria is between the diameter of 0.5 to 5 µm.
There are also many properties of bacteria. It has prokaryotic (no membrane-enclosed nucleus), a single chromosome, and a closed circle of double-stranded DNA. It doesn’t have a mitochondria or chloroplasts. If you want to classify bacteria you have to know many things such as the shape. These are the three most common forms of bacteria -bacilli: rod shaped, cocci: spherical, and spirilla: curved walls.
In 1928, a Scottish biologist named Alexander Fleming made a serendipitous discovery of the antibiotic penicillin. On observation of the Staphylococci culture plates left for several weeks, he noticed contamination by fungi (Brown, 2005). Around the fungi moulds were zones of inhibition, suggestive of an agent or substance containing anti-bacterial properties being produced it. During further analysis, he realised that only the Penicillium mould produces this substance. The substance was then consequently named Penicillin and became available on the market in 1942 (Brown, 2005).
Diane Connor 27/6/2013 IC 02 1.1 Identify the differences between bacteria , viruses ,fungi and parasites The bacteria is one single cell organism, which have evolved to thrive in almost any environment and they can be found in almost any of the substance/surface and also in any human body, there is only 1% of the bacteria is actually harmful, its bad or infectious bacteria that can cause illness as they rapidly reproduce and produce a toxin that kills or mutates cells, the bacteria is also a self-sufficient. The viruses is a very small capsule that contains DNA or RNA , viruses unlike bacteria are not self-sufficient and they need host in order to reproduce , I.C a human body , when a viruses enters the body ,it can enters some certain cell and takes over making the new host
For both the Human Amylase and Fungal Amylase the results yielded somewhat similar outcomes. At zero degrees Celsius there was some starch present. The same applied for the test tubes in the forty degrees Celsius. The test tubes in the sixty degrees Celsius no starch formation was present. And at ninety five degrees Celsius, all of the starch was present.
Water passes from cell to cell by osmosis. They are only a few cells thick. They do not have true Roots, Leaves, or Stems. | Trypanosome | protista | sarcomastigophora | They are unicellular. they have natural hosts that evolve with them to ensure mutual survival.
Noah Martin Martin 1 English, Period 1 Mrs. Bueno 6, January, 2012 The Deadly Weapon Napalm Have you ever wondered what we used in our previous wars? What weapons we used that was so effective and so fierce in battle. I am talking about the chemical weapon called “Napalm”. A fiery sticky substance that burned everything it touched. The U.S used napalm in a lot of battles, but was the most common chemical weapon used and known for in the war against Vietnam It also showed how powerful this weapon was.
The most common treatment for these infections, caused by Staphylococcus aureus is the antibiotics. There are many kinds of antibiotics using in the modern days, but the first kind of antibiotic being introduced for treating Staphylococcus aureus was Penicillin in 1943. This kind of antibiotic stops the formation of peptidoglycan cross-linkages that makes the bacterial cell well stronger. This eventually makes the cell wall formation and degradation become imbalanced, consequently lead to the cell to die. Other kinds of antibiotic were quick introduced for treating Staphylococcus as well.
That’s why it’s so important to wash your hands or use hand sanitizer, it grows in numerous places. Also bacteria cells do not contain a cell nucleus and rarely harbor membrane-bound organelles, unlike eukaryotes which they all contain a nucleus. Bacteria has a wide range variety of metabolic types and that is how they are defined using their taxonomy, the three different types are phototrophs (sun light), litotrophs (inorganic compounds), and organotrophs (organic compounds). In the lab we tested our very own bacteria off of our tongue and smeared it on a blood agar plate, sheep blood to be exact. We collect the bacteria from the inside of the mouth and grow them in specially prepared petri dishes.
Only a handful of the earthworm species are in the genus Lumbricus. There are 32 described native earthworms in the Pacific states alone. There are over 20 introduced lumbricids, plus many introduced megascolecids. This is an English language Wikipedia, not a US one, so US-only info should be used sparingly. Digestion and excretion The earthworm has a simple digestive system compared to other creatures.