The structure of DNA is referred to as a:
a. ladder.
b. helix.
c. wave.
d. spiral.
Question 2
Which of the following statements about appetite is false?
A) Appetite is stimulated by seeing food.
B) Appetite may or may not be related to being hungry.
C) Appetite may be triggered by smelling food.
D) Appetite is accompanied by unpleasant physical symptoms.
E) Appetite causes people to eat even after they are satiated.