Hair fibers are composed of:
A) melanin.
B) keratin.
C) collagen.
D) lipocytes.
B) keratin.
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The integumentary system is composed of the epidermis, dermis, and subcutaneous tissue
Indicate whether the statement is true or false
According to Oriard, which of the following is true?
A. Referees were needed in American sports because Americans had a different attitude toward sporting competition than did the British who invented soccer and rugby. B. Americans, in contrast, had no such code of honor, did not have a ruling aristocracy, and primarily thought of themselves of the "middle class," which had no code of honor so there was no "middle class" code of honor to break. C. As a consequence of no "code of honor" to adhere to, Americans sought to exploit the rules of athletic competitions as much as they wished to enforce the rules. D. British amateur athletes operated under a code of honor that was associated with the elitist class-the aristocracy, which provided the major source of amateur athletes in Great Britain. Captains, not referees, enforced the code that was used to support the social status and expected behaviors of the British aristocracy. E. All of the answers are correct.
Which of the following provides a chemical barrier to infectious disease?
A. tears B. the skin C. the nostrils D. hair
Women generally become intoxicated more quickly than men because they
A) have less body fat and higher water content. B) have thinner blood. C) have more body fat and lower water content. D) tend to sip their drinks.