Carla has acne. What caused it, and what can she do to treat it?
What will be an ideal response?
During adolescence, increasing androgens in both males and females cause oil glands to enlarge and produce more sebum. Acne is the inflammation caused when dead cells and sebum clog the duct where oil glands open onto hair follicles. Carla can wash her face two to three times each day with hot, soapy water to help open the pores.
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a) nasopharynx, oropharynx, laryngopharynx, larynx b) nasopharynx, nasal vestibule, nasal cavity, oropharynx c) nasal vestibule, nasal cavity, nasopharynx, laryngopharynx, oropharynx d) larynx, laryngopharynx, nasopharynx, oropharynxa
Many species of small mammals, especially those that hibernate, increase heat production by
A) growing denser fur during winter. B) burning highly vascular brown fat. C) panting. D) sweating.
Carbon-14 is useful in determining the age of a fossil up to about
A. 40,000 years ago. B. 10,000 years ago. C. 20,000 years ago. D. 50,000 years ago. E. 100,000 years ago.
Anthrax derives its name from which of the following aspects of the disease?
A) the appearance of eschars on the skin B) the shape of its endospores C) the microscopic appearance of its cells D) the shape of B. anthracis colonies on agar E) the necessity of burning animals killed by the disease