Which statement about chlamydia is true?
A. It is caused by a virus.
B. Among U.S. 15- to 19-year-olds, chlamydia cases are more common than human papillomavirus (HPV) cases.
C. No effective treatments exist for chlamydia, although some drugs can reduce symptoms of the disease.
D. It often has no symptoms but can lead to infertility and sterility if left untreated.
Answer: D
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Which of the following do researchers find about loneliness?
A. Most people who go to college do not experience loneliness until after they graduate. B. Typically, only college students who have a consistent tendency to feel lonely experience loneliness. C. Loneliness is a problem on college campuses, but primarily at large, impersonal schools. D. The majority of college students experience loneliness on occasion.
Describe the phenomenon of fishing and explain how it is related to error
What will be an ideal response?
Wayne was really irritated by his hockey jersey, and finally taped the right corner inside his hockey pants so it wouldn't get in the way of his slap shot. On his very next shift, he scored a goal on his first try. Now he tapes his jersey inside his hockey pants at the start of every game, and about 30% of his shots score goals. Based on what is known about operant conditioning, you should
conclude that Wayne's behavior best illustrates the concept known as: a. successive approximations b. adventitious reinforcement c. classical conditioning d. the Premack principle
An African study found that the probability of transmission of HIV through breast milk was about ______ percent
a. five c. twenty b. sixteen d. twenty-five