RNA polymerase attaches to regions just outside genes called ____________________. Fill in the blank(s) with the appropriate word(s)
ANS: promoters
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Olfactory neurons first transmit their action potential to the central nervous system structure called the
A. cerebellum. B. amygdala. C. accessory olfactory bulb. D. olfactory bulb. E. cerebral cortex.
The study of the frequency and distribution of a disease in a defined population is ________.
A. medicine B. clinical microbiology C. immunology D. epidemiology E. pathology
Assume that a plasmid (circular) is 3200 base pairs in length and has restriction sites at the following locations: 400, 700, 1400, 2600. Give the expected sizes of the restriction fragments following complete digestion
A) 700, 400, 1400, 2600 B) 300, 700, 1000, 1200 C) 400, 800, 1000 (2 of these) D) 300, 700, 2200 E) 400, 1200, 1600
The pressure-flow hypothesis describes
A. how carbohydrates enter the sieve tubes. B. how hormones move through the phloem. C. how carbohydrates in solution move through the phloem. D. how carbohydrates and minerals move through the xylem. E. how water and minerals move through the xylem.