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1. What is bacteriuria? When is it significant?2. How do microorganisms enter the urinary tract?3. Why is aseptic urine collection important when cultures are ordered?4. List five bacteria that can cause urinary tract infection.5. If you counted 20 colonies from a 0.01-ml inoculum of a 1:10 dilution of urine, how many organisms per milliliter of specimen would you report? Is this number significant?6. Is the urine colony count an appropriate indicator of the need for an antimicrobial susceptibility test of an organism isolated from a urine culture? Why?7. If you took a urine specimen for culture to the laboratory but found it temporarily closed, what would you do?8. How would you instruct a female patient to collect her own urine specimen by the "clean-catch" technique? A male patient?9. What can you learn from visual inspection of a urine specimen?10. Describe a urine transport system that allows the specimen to remain at room temperature for short time periods without refrigeration.11. What is leukocyte esterase? What is its significance when detected in urine?12. Define serum titer.13. What are acute and convalescent sera? Why must both be tested to make a serological diagnosis of infectious disease?14. What is the difference between an agglutination test and a precipitation test?15. In a paired serum sample, what test results indicate recent infection?16. What is a humoral antibody?17. Name the two types of antibodies that are produced following a microbial infection. What is the significance of each in serological diagnosis? Describe a doubling serial dilution of six tubes, beginning with a serum dilution of 1:2 in the first tube.
Describe, in full detail, the process of translation in a prokaryote, from the beginning up to and including the first translocation (movement) of the ribosome down the mRNA. DO NOT describe events after that point and DO NOT describe the attachme..
How does an enzyme perform such selective activities on different substrates.
Determine which biological macromolecule is not really a polymer and Which statement about biological polymers and their precursors below is TRUE?
How do you calculate the energy yield of sugars, amino acids and fatty acids? If you could explain or if it is too much refer me to one I am horribly confused. Thank you!
B-oxidation can occur via several pathways. Birds can breakdown amino acids via mitochondrial B-oxidation, peroxisomal B-oxidation, and glyoxysomal B-oxidation. Rank the energy production of these methods of B-oxidation from high to low.
q1. a potato processor is concerned that her potato flakes are an undesirable golden brown colour as soon as they are
In which part of the cell does it inhibit cell division.
Calculate the avrg. size of the cork cells, in mm, if there are 6 cells across the field of view and the objective lens used was 40x.
Explain how the name of a muscle can distinguish its location, action, shape, and function. Select five different muscles to make this distinction.
q1. angel is a biologist studying lake ecosystem in which leaf-eating insects are consumed by fish which are consumed
A recessive mutant allele, black, causes a very dark body in drosophila when homozygous. The normal wild-type is described as gray. What F1 phenotypic ratio is predicted when a black female is crossed to a gray male whose father was black?
Imagine a trans-membrane protein embedded in a plasmamembrane. This protein has a region that is dense in the amino acidglutamine, whose R group contains an oxygen and anitrogen.
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