Which transcription factors are normally bound to the Psf promoter in the presence of Mg2+ only?
(a) none
(b) MetA only
(c) MetA and Met B
(d) MetA, MetB, and MetC
Ans: (c) MetA and Met B
You might also like to view...
Moist heat sterilization at 100°C kills all of the following EXCEPT ________.
A. viruses B. protists C. bacterial endospores D. fungal spores
The earth spins
a. fastest at 60 degrees latitude. b. fastest at the equator. c. fastest at 90 degrees latitude. d. fastest at 30 degrees latitude. e. at an equal speed at all points.
During the course of Darwin's journey aboard the HMS Beagle he was collecting and recording _____ and ________.
A. religious; political evidence B. fossils; geological evidence C. historical; biological evidence D. geological; biological diversity evidence E. biological; genetic evidence
The flow rate of a gas through a tube is proportional to the diameter of the tube. Through which structure in the human respiratory system does air flow the fastest?
A) bronchiole B) trachea C) bronchus D) alveoli