Which of the following types of glands secretes an oily substance into the hair follicles, to keep the hair and skin surface lubricated and water-resistant?
A. Sebaceous glands
B. Sudoriferous glands
C. Eccrine sweat glands
D. Ceruminous glands
E. Apocrine sweat glands
Answer: A
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Which is the primary absorptive organ of the digestive system?
a. salivary glands. b. oral cavity. c. stomach. d. small intestine. e. colon.
Specialized epithelial cells that contain receptors to detect taste are called __________.
Fill in the blank(s) with the appropriate word(s).
When and how do ketone bodies form?
A) during the absorptive state when carbohydrates are broken down by the liver B) during the postabsorptive state when carbohydrates are broken down by the liver C) during the absorptive state when lipids and amino acids are broken down by the liver D) during the postabsorptive state when lipids and amino acids are broken down by the liver E) during the postabsorptive state when glucose is being converted to glycerol and amino acids
The "control center" of the cell is the
A. endoplasmic reticulum. B. mitochondrion. C. nucleus. D. plasma membrane. E. ribosome.