Which of the following is TRUE about flexibility?
A. Good flexibility can prevent most sports injuries.
B. It is not important for people who walk daily or meet aerobic activity guidelines.
C. It is a component of health-related fitness.
D. It is important for treatment but not prevention.
Answer: C
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PD-1 is a negative co-stimulatory signal expressed by tumor cells. What advantage would the expression of PD-1 have in a tumor cell avoiding the immune response?
A. None. Tumor cells are recognized as self and therefore do not pose a health threat. B. Tumor cells can avoid being killed by activated TC cells. C. Tumor cells can avoid apoptosis triggered by TH cells. D. Tumor cells avoid phagocytosis by dendritic cells. E. Tumor cells are stimulated to reproduce much faster than tumor cells that do not express PD-1.
Which of the following does NOT contribute to causing bacterial vaginosis?
A. engaging in sexual activity B. changing sexual partners C. douching D. using condoms
Which of the following statements about hate crimes is true?
A. Hate crimes rarely involve multiple perpetrators. B. Hate crimes are rarely inflicted at random on people. C. Most states do not have laws in place on hate crimes. D. Hate crimes against lesbian, gay, bisexual, and transgendered persons have increased on college campuses in recent years.
Much like reference books and refereed journal articles, Internet postings undergo evaluation by experts.
Answer the following statement true (T) or false (F)