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What is the last definition of the pasteurization according to FDA (in the year 2005)? List out 20 antimicrobials used in the food manufacturing and specify the maximum allowance of each one in food.
Some of the species of bacteria which live at the surface of sediment on the bottom of lakes are facultative anaerobes; that is, they are capable of either aerobic or anaerobic respiration.
Name the spice (Black Pepper Agar, Chili Powder Agar and Cloves Agar) would be least efficient in controlling the microbial growth of Saccharomyces cerevisiae? Explain why?
I would appreciate clarification on this and more information on what they require to grow. Do they ever grow fast? If so what would it take for them to grow fast?
Exhibit a genetic cross between the two sufferers of sickle-cell trait. State the phenotypic ratio and the genotypic ratio of the F1 generation of offspring with respect to the hemoglobin.
A patient is in the hospital having bacterial meningitis. The doctor wants to find out whether the patient has an infection with Neisseria meningitides or Haemophilus influenza.
The centromeres of each chromosome divide, sister chromatids separate, the chromatid DNA replicates, daughter chromosomes start to move toward the opposite poles of the cell or all are all true.
1) Describe the three yeast behaviors based on the modern concepts of microbial metabolism. 2) What was incorrect regarding the Pasteur's conclusion?
Explain how is sex determined in grasshoppers? Can you find out other illustrations of organisms with a similar system of sex determination?
The order of nucleotides is critical in finding out the amino acid which is encoded. What do the given trinucleotides code for: AAC, ACA, CAA and CAC?
Describe why can prokaryotic cells be smaller than the eukaryotic cells and still carry on all of the functions of life?
Explain how did the theory of biogenesis lead the manner for the germ theory of disease?
Ciprofloxacin, erythromycin, and acyclovir are employed to treat microbial infections. Ciprofloxacin inhibits DNA gyrase. Erythromycin binds in front of the A site on the 50S subunit of the ribosome
Describe why gram-negative bacteria are more resistant to the biocides than gram-positive bacteria. Be specific and expressive in your response.
Clostridium and Streptococcus are both catalase-negative. Streptococcus grows through fermentation. Explain why is Clostridium killed by oxygen, while Streptococcus is not?
Restriction endonucleases are enzymes that digest the DNA. They are not similar digestive enzymes that completely digest DNA to monomers so cells can eat nucleic acids.
You add up 10 ng of pGEM to 50 ul of competent cells, and then dilute this into a total of 1 ml Luria broth after the transformation. You take 100 ul of the Luria broth and plate on and agar plate.
Explain DNA sequencing with reference to the cloning of a DNA fragment in bacteriophages M13 based cloning vector.
One of these dogs ate some of a birthday cake. Digestion and electrophoresis of DNA found at the scene of the crime with the restriction enzyme Scs1 revealed a banding pattern included of four band
Describe why a woman carrying the gene for hemophilia can generate two hemophiliac sons when she is mated to a normal male.
You failed to recover any revertants from mutants A and recovered one revertant from mutant B. This revertant was crossed with a normal wild-type strain. What proportion of the progeny from this cro
Describe the impact of chromosomal aberration during the Meiosis II, when the normal gametes produced as an end product of Meiosis II are compared with those produced from Meiosis II with the chromo
I have utilized a polyacrylamide gel in a protein analysis of fish samples. My question is why this is employed rather than an agarose gel.
Would it be possible to investigate the possible homology between the Y chromosome on an animal (example: platypus) and the Y chromosome on a human - using FISH (fluorescent in situ hybridization)?
Eukaryotic genes differ than the prokaryotic genes. Please describe, in depth, the post-transcriptional modification which a eukaryotic mRNA goes through before it leaves the nucleus and explain how