E. coli; Amino Acid Alanine; Carcinogen; Mutagen ... etc
Subject: There is a strain of E. coli that is unable to make its own amino acid alanine. I am answering practice questions at the end of the chapter to get ready for a test. This is a senario given that if I allow this bacterial strain to grow in medium containing alanine and then plate 10 to the 6th power cells on a petri ...continues
Amino Acid Sequence in a Protein Molecule
I'm studying for a upcoming test by doing practice problems, but I can't figure this one out. An amino acid sequence in a protein molecule is met-lys-gln-pro-phe-arg-ser Questions: The DNA sequence responsible for this protein segment would be? The anticodons in the tRNA's of the previous question would be? A base sub ...continues
We did the catalse test in class and I have been able to answer some questions but not all. Questions: 1) Provide an example of reduction reaction performed by cells in which hydrogen is not added to the reduced compound. (I think it deals with hydrogen peroxide--> to water and oxygen) 2) Would a flase positive due to th ...continues
#6 Macrophages perform the final job of removing tissue debris and other products of infection. Indicate some of the possible effect when these scavengers cannot successfully complete the work of phagocytosis. (1pt.) #11 A patient with chronic diarrhea was found to lack IgA in his secretions, although he had a normal leve ...continues
I am conducting a yearlong research project where I am testing a new medication, telithromycin, against 4 different types of bacteria. I will then compare its activity to that of another medication, levofloxacin, that is already known to work against these 4 bacteria. I have measured zones of inhibition for each medication vs. e ...continues
1. An aqueous or alcohol solution of a single basic dye. a. Differential Stain b. Simple Stain c. Complex Stain d. Negative Stain e. background stain 2. Reacts differently with different kinds of bacteria allowing you to distinguish between them. a. Differential Stain b. Simple Stain c. Complex Stain d. Negative ...continues
3 multiple choice questions in microbiology
1. When considering the treatment of the funal infections, what is an important structual component of the fungi to consider? a. cell wall b. Cell membrane c. nucleus d. hyhpae e. thallus 2. Whay are slime molds unique? a. because the are slimy b. because they have both fungal and animal characteristis and are classif ...continues
1. What the last definition of pasteurization according to FDA (2005). 2. List 20 antimicrobials used in food manufacturing and specify the maximum allowance of each one in food. 3. What are bacteriocins, list 5 of them and provide examples of applications in foods. 4. List 5 natural antimicrobia ...continues
Can microbiology assist human genetics? How the alkaptonuria (black urine disease) mutation was identified? Many of the processes that convert one material to another are common to many organisms. Some were preserved during evolution and they are similar among bacteria, plants, animals and humans.
1. Please mention 5 nonthermal technologies to process foods and thoroughly describe all of them. 2. Please explain the Preservation of Foods by Oscillating Magnetic Fields. Please provide a critical evaluation of this technology. Explain the possible mechanism of microbial inactivation by this approach. 3. Please sketch ...continues
