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Based on your research and readings, respond to the following:
1) Why is it important to have a pure culture and not a mixed culture when performing biochemical tests?
2) How does culturing an organism on several different types of media can help identify an organism in a relatively short period of time?
3) What is the technique used to isolate pure cultures from a specimen that contains mixed flora? Describe the technique.
4) What are the characteristics by which bacterial colonies may be distinguished? Describe at least four such characteristics.
Suppose you found two distinguishable types of individuals in wild populations of some organism in the following frequencies: Type 1 Type 2 Females 99% 1% Males 90% 10% The difference is known to be inherited. Are these data compatible with the tr..
define Why do we use 16s rDNA for sequencing
A patient has blood with a pH of 7.35. Predict the direction of PCO2, for a condition which is consistent with respiratory acidosis. What compensation acts to restore pH to near the value of pH 7.4?
Mother Nature uses a "fail-safe system" to prevent inappropriate activation of the immune system. Provide several examples of this strategy.
In a study of intraspecific aggression, an experimenter finds that sixteen out of 23 animals tested in species A exhibit aggression,
How do phospholipids interact with water molecules.
Angiosperms are more advanced than gymnosperms because gymnosperms lack which structure found in angiosperms?
Wild-type fruit flies have brick-red eyes. A pure-breeding strain of wild-type flies was crossed with a pure-breeding strain with white eyes.
You have isolated five yeast mutants unable to metabolize galactose. All of the mutants fail to transcribe the GAL2 gene, which encodes the enzyme for the first step in metabolizing galactose.
q1. in the hin recombinase system of salmonella typhimurium discussed in class what do you assume would be the effect
Use a chi-square test, test whether these two loci show independent assortment? How would you describe the frequency of the progeny genotypes?
The human is a pretty good system for understanding mammalian reproductive endocrinology, although most mammals do not menstruate. How are the processes of ovulation, uterine preparation, and menstruation all coordinated by the endocrine system?
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