Of the 170,000 new cases of lung cancer diagnosed in the United States each year, greater than 90% of these patients are current smokers or former smokers
Indicate whether the statement is true or false
TRUE
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Atomic nuclei contain protons and _______.
A. moles B. neutrons C. isomers D. ions
Which of the following is the most important in order for organisms to facilitate social behavior?
a. There must be a large population. b. All present must be of the same species. c. All present must have the same genetic imprinting. d. There must be a mechanism for communication. e. No outsiders can be allowed to enter the group.
S. aureus has been isolated from George's infected wound. To satisfy Koch's postulates, what would George's doctor need to do with the isolated S. aureus?
a. Inject the S. aureus strain into an animal and see whether it develops the same type of infection that George has. b. Compare the DNA sequence of the strain of S. aureus isolated from George to other S. aureus strains to see whether it has been isolated from other similar infections. c. Inject the S. aureus into an animal, observe whether the animal gets an infection similar to George's, and isolate the same strain of S. aureus from the infection. d. Inject the S. aureus into an animal; if the animal develops the same infection, isolate the infectious material from the animal and test its ability to vaccinate another animal.
In a water molecule, hydrogen atoms do not bind equidistant from each other.
True or False?