Which of the following statements is true about teeth?
A. The outer surface of enamel forms the crown of a tooth.
B. The primary component of teeth is dentin.
C. The root is covered by cementum.
D. All of the choices are correct.
Answer: D
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Which of the following contributes to a catabolic state?
A. Decreased plasma glucagon concentration B. Increased plasma cortisol concentration C. Increased plasma insulin concentration D. Increased plasma androgen concentrations E. Hypothyroidism
Which region of the brain controls breathing?
A) Cerebrum B) Medulla oblongata C) Hypothalamus D) Occipital
Recently Alex's family noticed that he is craving salt to the point where he uses it excessively on his food. He also has a need to consume strange substances such as clay and burnt match tips. What might be the cause of this strange behavior?
What will be an ideal response?
Which of the following can be broken down chemically by amylase?
A) lactose B) glucose C) amylopectin D) sucrose