Only 2 ? cibi 3002

(#1)   What is the definition of nutrients?

A)  Nutrients are the heat, light, and ultraviolet rays that reach Earth, which are utilized in chemical reactions to power life.

B)  Nutrients are molecules that collect and store energy.

C)  Nutrients are the pigment molecules that absorb specific wavelengths of sunlight, which subsequently store energy in chemical bonds.

D)  Nutrients are atoms and molecules that organisms obtain from their living or nonliving environment and that are required for survival.






(#2)  Which of the following is the definition of homeostasis?

1)  a name for the excretory process of freshwater flatworms

2)  the maintenance of water and salt within the body

3)  the relatively constant internal environment required to preserve health and, ultimately, life

4)  the elimination of wastes and excess substances from the body