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Q1. To set up a link between specific bacterium and skin disease, researchers have shown that a bacterium was present in sick persons but not in healthy individuals. They isolated bacterium in a pure culture and demonstrated that experimental healthy animals injected with this culture became sick. What other test do researchers require to perform to be absolutely sure that the bacterium is responsible for the disease?
Q2. Mitochondira are thought to be descendants of certain alpha-proteobacteria. They are, however, no longer able to lead independent lives because most genes originally present on their chromosome have moved to the nuclear genome. Which phenomenon accounts for movement of these genes?
Distinguish between pathological and trauma. Explain the main pathways by which energy from the sun or from specific chemical reactions enters organisms and passes from organism to organism or back into the environment.
Is this organism recovered more frequently as a nosocomial pathogen, as a community-acquired pathogen, or at similar rates in both settings? Elucidate your choice.
Using this information, what two strategies can you use to isolate the giraffe's gene from its genomic library. If only females are found to be black, what were genotypes of the parents.
What disorder does this man have? Gastric secretions normally include about 10mmole/L potassium. How do you account for the low serum potassium in this patient.
Though, at the restrictive temperature, the minimum size required to enter mitosis is decreased greatly; as a result, diminutive daughter cells are produced.
Eighteen museum specimens of the extinct great Auk were used to amplify coxI, a mitochondrial gene for cytochrome oxidase. DNA sequence analysis of 600 nucleotides of coxI revealed 5 alleles and the number of nucleotide differences between them are s..
On the Pacific island of Guam, large herbivorous bats called "flying foxes" commonly feed on cycad seeds, a potent source of neurotoxins. The flying foxes do not visit male cones. As a result, what should be true.
Albinism is a condition that results from the lack of normal pigmentation. In humans, individuals with two recessive alleles at ALBINO (aa) locus are albino.
Why is energy from fusion reactors, dissimilar that from fission reactors, so attractive from an environmental perspective. Consider the HIV enzyme called protease. The amino acid residues at the active site are highly hydrophobic.
You find out an unusual organism growing in the bark of a dying tree. Under a microscope, you observe that its cells are eukaryotic, have cell walls, and do not contain chloroplasts. Into what kingdom would you categorize this organism? Explain the d..
Rhosopseudomonas is an anaerobic photoautotroph. How would you sterilize a mattress used by a patient with bubonic plague.
Which term describes tonicity of the external solution. Were latitude the only control of temperature, the isotherms would run straight across the map from east to west. Describe one region of the world where this hypothetical isotherm pattern is rea..
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