Which of the following statements is correct regarding promoters?
A. Promoters are regions of DNA that indicates the start of a gene
B. Promoters act as a "start here" signal to help control gene expression
C. Promoters are regions of DNA where RNA polymerase can bind to start transcripton
D. All of the above are correct
Answer: D
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An essential amino acid is one that the body cannot synthesize in sufficient amounts
__________________Indicate whether the statement is true or false.
To obtain optimal production in a small garden, one should
A) plant seeds in rows with minimal spacing between rows. B) plant seeds in clumps with large spaces between clumps. C) plant seeds in a uniform pattern throughout the garden. D) sow seeds randomly throughout the garden.
Sometimes premature babies suffer from respiratory distress syndrome. What substance would you administer in a breathing tube to the infant?
A) antibiotics B) surfactant C) anti-inflammatory drugs D) hydrocortisone
Plasma from a sick mouse is filtered across a membrane that has a 200 nm pore size. If the filtrate is still infectious when injected into a healthy mouse, then the pathogen is most likely a(n)
A. archaean. B. parasitic worm. C. bacterium. D. fungus. E. virus.