Biological diversity is composed of what three levels?
A. genetic; species; and ecosystem diversity
B. genetic; function; and process diversity
C. ecosystem; species; and process diversity
D. trophic; ecosystem; and species diversity
Answer: A
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Which of the following organisms has clear colonies on MacConkey agar, oxidizes glucose and xylose, and has the ability to hydrolyze esculin?
a. Alcaligenes xylosoxidans b. Paracoccus yeei c. Rhizobium radiobacter d. Shewanella putrefaciens
In horses, black coat color is influenced by the
dominant allele (B), and chestnut coat color by the recessive allele (b). Trotting gait is due to a dominant gene (T), pacing gait to the recessive allele (t). What color horse would you use to find out the genotype of a black trotter? Give the genotype and phenotype. What will be an ideal response?
Why isn't mitochondrial DNA a unique identifier?
A. Mitochondrial DNA is inherited through the maternal lineage. All offspring inherit their mother's mitochondria, and therefore the same mitochondrial DNA. As a result, all family members that share a maternal lineage would have the same mitochondrial DNA. Mitochondrial DNA can therefore be used to confirm or eliminate a person's relationship within a maternal line, but cannot be used to identify a specific individual. B. Mitochondrial DNA is inherited through the maternal lineage. All female offspring inherit their mother's mitochondria, and therefore the same mitochondrial DNA. As a result, all female family members that share a maternal lineage would have the same mitochondrial DNA. Mitochondrial DNA can therefore be used to confirm or eliminate a person's relationship within a maternal line, but cannot be used to identify a specific individual. C. Mitochondrial DNA is inherited through the paternal lineage. All offspring inherit their father's mitochondria, and therefore the same mitochondrial DNA. As a result, all family members that share a paternal lineage would have the same mitochondrial DNA. Mitochondrial DNA can therefore be used to confirm or eliminate a person's relationship within a paternal line, but cannot be used to identify a specific individual.
A patient who ingested a significant amount of ethylene glycol 6 hours ago would MOST likely present with:
A) slurred speech and ataxia. B) hypertension and tachycardia. C) an ethanol odor on the breath. D) flank pain and absent urination.