DIFFERENT TYPES OF AGAR Mac Conkey‘s Agar plate MacConkey (also McConkey) agar is a culture medium designed to grow Gram-negative bacteria and stain them for lactose fermentation. It contains bile salts (to inhibit most Grampositive bacteria‚ except Enterococcus and some species of Staphylococcus)‚ crystal violet dye (which also inhibits certain Gram-positive bacteria)‚ neutral red dye (which stains microbes fermenting lactose)‚ lactose and peptone. QUALITY CONTROL Results after 24 hrs at
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read Section 5: Bacterial Cellular Morphology and Simple Stains and Section 6: Bacterial Cell Structures and Differential Stains and then answer the following questions: 2. What is the third important feature of microscopy? Why? Third important feature of microscopy is contrast. To be visible‚ the specimen must contrast with the background of the microscope field. 3. A simple stain will help determine these 3 features of the specimen on the slide: Cell morphology‚ size and arrangement then may be
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It is a mutation in wing morphology that reduces wing size. A controlled cross was conducted between these two true-breeding mutant flies. Their progeny (F1) being heterozygous for both mutations displayed only wild type phenotypes. These two mutations in Drosophila are both believed to follow an autosomal recessive pattern of inheritance. Figure 1. Images Drosophila melanogaster with mutations. From left to right‚ mutation in eye color (e)‚ mutation in wing morphology (w). A controlled cross was
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stream sample‚ provided suitable conditions for bacterial growth. In fact‚ in these two samples‚ bacterial growth covered the entire Petri dishes. However‚ a large number of bacterial colonies manifesting the most significant variances in their morphologies
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In addition‚ study of the pakicetid ankle indicate a morphology that was specifically seen in artiodactyls (Thewissen et al.‚ 2001). According to Rose (2001)‚ it is highly unlikely that such an adaptation is a result of convergent evolution because cetaceans have evolved to be more equipped for an aquatic lifestyle. Rather‚ it is a remnant feature of life on land (Rose‚ 2001). Despite this evidence‚ other scientists argue that tooth morphology of ancient cetaceans is not consistent with artiodactyls
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Fungus From Wikipedia‚ the free encyclopedia (Redirected from Fungi) "Fungi" redirects here. You may be looking for Fungi (music) or Fungus (XM). Fungi Temporal range: Early Devonian–Recent (but see text) PreЄЄOSDCPTJKPgN Clockwise from top left: Amanita muscaria‚ a basidiomycete; Sarcoscypha coccinea‚ an ascomycete; bread covered in mold; a chytrid; a Penicillium conidiophore. Scientific classification Domain: Eukaryota (unranked): Opisthokonta Kingdom: Fungi (L.‚ 1753) R.T. Moore
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Components of Second Language Knowledge Components of second languague knowlege are divided into three: vocabulary‚ morphology and phonoly. It is necessary deepen in these elements becase sometimes even the most highly educated adult native speakers do not have all the knowledge about language‚ and expect L2 learners have it would be unrealistic. Vocabulary is the most important level of L2 knowledge for learners to develop. We must remember that vocabulary is the key to communication. Yhe moment
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is to learn how to use a microscope while viewing various types of bacteria cultures. Prepared slides are used to view bacterial cultures under a microscope that would normally be invisible to the naked eye. Bacterial shapes and arrangements or morphology are observed in prepared slides and fresh yogurt culture. Purpose: The experiment is meant to determine the shapes of bacteria under different magnifications when using a microscope; 10X‚ 40X‚ and 100X. A microscope must be used to see and study
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used to understand the basic morphology of these bacteria. As these plates were incubated and grown‚ the presence of two separate bacteria colonies was visible. The colonies from the mannitol salt were used to incubate a TSB broth to grow the gram-‐positive culture. The purity of this broth was tested using gram-‐staining technique. A circular colony from the TSA plate was used to incubate a TSB broth for gram-‐negative growth. Similarly‚ examining the morphology of the bacteria-‐using gram
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“modern” and “archaic” in reference to skull morphology. “Modern” features in skull morphology as the word is used here include thin cranial walls‚ small supraorbital ridges‚ small teeth‚ small eye sockets‚ broad‚ flat foreheads‚ large cranial volume (above 1200 cc.)‚ low prognathism in the area of the lower face‚ and a high‚ vaulted shape in the area of the cranium. “Archaic” features in skull morphology include thick cranial walls‚ heavy supraorbital ridges‚
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