Which of the following are you assuming is true to calculate the p-value of a test statistic?
A. The null hypothesis
B. A selected sample
C. The test statistic is normally distributed in small samples.
D. An efficient estimator
Answer: A
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Bread mold can grow in a minimal medium without supplements (wild type) while certain mutated strains (mutants) can only grow in a minimal medium that is supplemented with specific intermediates found in the following metabolic pathway for arginine synthesis:
minimal ------> ornithine -------> citrulline ------> arginine, where enzyme 1 converts the precursor to ornithine, enzyme 2 converts ornithine to citrulline, and enzyme 3 converts citrulline to arginine. A strain that can grow in a minimal medium containing arginine, but NOT in a minimal medium containing citrulline or ornithine would have a mutation in the gene that encodes for A. enzyme 1. B. enzyme 2. C. enzyme 3. D. both enzymes 1 and 3. E. both enzymes 2 and 3.
In which of the following areas of the human body do secretions play the greatest role in preventing microbial colonization?
A. Genital tract B. Stomach C. Large intestine D. Upper respiratory tract
Legionellosis is a zoonosis.
Answer the following statement true (T) or false (F)
Long filaments containing microtubules and used for cellular locomotion are called ________, whereas short fibers containing microtubules and used for cellular locomotion are called ________.
What will be an ideal response?