The chromosome must be ___________ in order to fit into the bacterial cell.
A. supercoiled by topoisomerases
B. supercoiled around histone proteins
C. organized into loop domains by topiosomerases
D. compacted into a nucleosome
E. both organized into loop domains and supercoiled by topoisomerases
A. supercoiled by topoisomerases
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Which of the following statements is TRUE of highly repetitive sequences?
A. They play a vital role in transcription. B. They play a vital role in translation. C. They can be found millions of times in a eukaryotic genome. D. They typically increase fitness of the organism. E. They typically decrease fitness of the organism.
Erythropoietin is secreted by
a. pancreatic islet cells. b. the thyroid gland. c. the pituitary gland. d. the pineal gland. e. the kidneys.
Threatened species
A. are species likely to become endangered in the future. B. are found only in captivity. C. will be extinct within 100 years. D. are rare species that are exploited by humans. E. are currently in danger of extinction throughout all or most of their range.
The determining function that drives share of accepted job offers for a company is given by the following equation: AcceptedOfferst = ?0 + ?1StartingSalaryt + ?2EconomicClimatet + Ut, where the unit of observation is particular month (t). Suppose one wanted to use the national unemployment rate (unemploymentt) as a proxy for EconomicClimate (i.e., ran the above regression replacing the UnemploymentRate with EconomicClimate). How should we interpret the estimated coefficient on the UnemploymentRate (i.e., the proxy variable)?
A. A good estimate for ?2 in the above determining function. B. A good estimate for ?1 in the above determining function. C. A good estimate for ?1 + ?2 in the above determining function. D. None of the answers is correct.