What contributes to negative calcium balance

Bulimia nervosa is characterized by a. a refusal to eat enough food to maintain normal, healthy body weight and/or the use of measures to produce severe weight loss. b. high fat intake and low level of physical activity. c. alternating binge eating and purging through vomiting, laxatives, or diuretics. d. normal food consumption interrupted by episodes of high consumption, resulting in obesity.

Which of the following choices are the fat soluble vitamin? a) c b) b6 c) d d) calcium

Which is the lipid molecule that controls what types of molecules can pass though?