How has artificial selection been used to shape the characteristics of food producing plants?
What will be an ideal response?
ANS:
Answers will vary, but should include increase in harvest yields and
may include characteristics such as increased palatability or nutritional value.
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What is required for formation of the transcription initiation complex in eukaryotes?
A. binding of RNA polymerase II to the TATA box, followed by recruitment of transcription factors B. binding of a transcription factor to the TATA box, followed by recruitment of additional transcription factors and recruitment of RNA polymerase II C. binding of the sigma subunit to promoter elements at -35 and -10, followed by recruitment of the core polymerase D. binding of the sigma subunit to the start site followed by recruitment of RNA polymerase II E. binding of a transcription factor to the transcription bubble, followed by recruitment of additional transcription factors and recruitment of RNA polymerase III
Unwinding the double helix to separate the parental strands requires a __________ protein that hydrolyzes ATP to drive the unwinding reaction.
A) primase B) DNA ligase C) DNA polymerase III D) topoisomerase E) helicase
Which of the following is NOT an example of a eukaryote?
A) Plant B) Animal C) Bacterium D) Fungus
Which of the following diseases is (are) caused by prions?
A. Mad cow disease B. Scrapie C. Kuru and Creutzfeldt-Jakob Disease D. All of the choices are correct.