Which of the following is the binding site for RNA polymerase on the DNA molecule?
a. structural genes.
b. repressor gene.
c. promoter sequence.
d. operator sequence.
e. region between an operator and the first structural gene.
ANSWER: c
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A. potential; ionic B. potential; covalent C. kinetic; ionic D. kinetic; covalent E. kinetic; hydrogen
A cluster analysis is used when reading a DNA microarray to identify genes whose expression follow a similar patterns
Indicate whether the statement is true or false
Which of the following statements about cancer is FALSE?
A. It is characterized by uncontrolled cell division. B. Over 1 million Americans are diagnosed with cancer each year. C. Most cancers involve genetic changes that are passed from parent to offspring. D. At least 80% of all human cancers are related to exposure to carcinogens. E. It is caused by an accumulation of mutations.
The brown color of smog comes from light reflecting off of which substance in the atmosphere?
a. carbon dioxide b. sulfur compounds c. organic molecules d. mercury e. nitric oxide