What is the best definition of exercise?
A) A planned program of physical activity with the goal of improving or maintaining athletic performance
B) Planned, structured, repetitive, and purposive physical activity in which improvement or maintenance of fitness is the key
C) Movement that stresses the cardiovascular system
D) The capacity to do work
B
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Which of the following is not a concern about using biotechnology in the food industry?
A) Long-term effects of GM organisms on the environment are unknown. B) Small farmers will not be able to afford seed licenses and fees associated with GM products. C) Insects may become resistant to the genetic modifications intended to keep them away. D) Genetic modification may cause crops to produce a lesser volume of food.
Cultural norms help determine food choices by:
a. imparting an innate preference for sweet tastes. b. serving as the most influential source of nutrition information in the U.S. c. influencing beliefs about which plants and animals should be eaten as food. d. controlling the physiological need for food.
The nutrient which is found in very small amounts in almost every cell of the body, but mostly in bone and muscle is
A) zinc. B) vitamin C. C) iron. D) vitamin A.
Identify a mediator that influences platelet aggregation and increases vascular permeability.
A. leukotrienes B. histamines C. prostaglandins D. interleukins E. lactoferrins