The data from metagenomic experiments is commonly displayed in a Venn diagram where there is overlap between datasets that suggest correlation with disease states. If a patient exhibits genomic sequences from multiple overlapping regions of the diagram
what happens to their predisposition to the disease?
A) It stays the same.
B) It goes up.
C) It goes down.
D) Genetics do not play a role in disease predisposition.
Answer: B
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Crop rotation occurs where different types of plants are grown on the land each season. If you had no access to chemical fertilizers, which of the following would be best to include in your rotation cycle?
A) corn B) tobacco C) cotton D) beans
The ____ classification system classifies viruses based on the type of nucleic acid the virus contains
a. Linnaean b. Mendelian c. Baltimore d. Philadelphia e. International Committee on Taxonomy of Viruses
Living cells typically have biosynthetic pathways to synthesize at least some of the amino acids used in making proteins. Some strains of E. coli, a prokaryote, can synthesize the amino acid tryptophan, while other E. coli strains cannot. Similarly, some strains of the yeast S. cerevisiae, a eukaryote, can synthesize tryptophan, while other S. cerevisiae strains cannot. Which of the following describes the most likely source of genetic variation found in the tryptophan synthesis pathways of both species?
(A) Exchange of genetic information occurs through crossing over. (B) Viral transmission of genetic information required to synthesize tryptophan occurs. (C) Random assortment of chromosomes leads to genetic variation. (D) Errors in DNA replication lead to genetic variation.
A microbiologist is conducting a research project on chemolithoautotrophs. This means that the investigator is examining certain aspects of a bacterium that
A. is a purple nonsulfur bacteria which depends on light. B. can oxidize inorganic molecules such as ammonia and sulfur for energy. C. can use the energy from sunlight to build organic molecules from carbon dioxide. D. uses light as its energy source and carbon for organic compounds. E. obtains carbon from organic molecules.