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Describe the principle of the Ames test for identifying chemical carcinogens youre answer should include what you would see for mutagenic and non mutagenic substances.
If the D-value for a certain food product at 70 degrees centigrade is 3 minutes, how long would you need to expose the food to that temperature to conform to the standard practice used in the food industry?
What are the characteristics of the cervical region of the vertebral column in amphibians, reptiles, birds and mammals?
As a biologist it is your job to look for plants that have evolved structures with a selective advantage in dry hot conditions. Which of the adaptions would be least likely to meet the objective.
Observe under the microscope and choose about 25 cells.Determine the number of cells that are plasmolysed out of the 25 cells.The cells in which the protoplasm appears to have lost contact with the cell wall,even slightly,must be counted.
Two true breeding pea plants were crossed. One parent is round, terminal, violet, constricted, while other expresses the respective contrasting phenotypes of wrinkled, axial, full.
What would your expected results be (growth or no growth) if you transformed bacteria with a plasmid that had ampicillin and kanamynic (another antibiotic) resistance and plated them. Situation growth or no growth and explain your reply.
If the sample were heated with Methylene Blue stain and counterstained with Carbofushin will you still be able to determine which bacterium were acid fast? If so, which colour would indicate acid-fast.
why is the plasma membrane of human red blood cell is more permeable to water than a single cell organism and how is it possible?
describe, the differences of the homeostatic imbalances of the kidneys known as Glomerulonephritis and Pyelonephritis.
BIOL 6150 home work, Linkage disequilibrium and LOD score, Assume the disease genotype is known, as A is the disease allele and a is the normal allele. The marker has four alleles (1, 2, 3,4).
You are a scientist working on a large protein (500 amino acids long) you have genetically engineered the protein in in such a way as to replace a single hydrophobic amino acid with a negatively charged amino acid.give the difference between prima..
What enzymatic activity does a reverse transcriptase perform? State the name of the human reverse transcriptase? Where on chromosomes does it function?
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