Among vertebrates, taste buds share certain common features. Which of the following is FALSE?
A) They are onion shaped.
B) They have a pore that opens out to the surface of the body.
C) They have numerous microvilli on the apical surface.
D) They are single neurons.
Answer: D
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The parietal pericardium is attached to the surface of the heart.
Answer the following statement true (T) or false (F)
Swelling and soreness of the lymph nodes indicate that __________.
A) the immune system is incapable of working. B) dangerous cancerous changes are occurring in the immune system. C) immune cells are fighting infection. D) too much or improper exercise has been undertaken. E) None of the answers are correct.
All hormones are
A) proteins. B) inorganic compounds. C) steroids. D) organic compounds.
The skin is waterproof, not allowing water to come in or out. Which protein is most responsible for this property?
A. Carotene B. Keratin C. Melanin D. Sebum