<span>They are proteins that are secreted from fat cells to help regulate energy balance.</span>
Answer:
C.
Explanation:
Here is a defintion of the immune system:
The major function of the immune system is to protect the host from environmental agents such as microbes or chemicals, thereby preserving the integrity of the body.
C. matches that definition nicely.
:)
Answer: b) storing the genetic code providing substrate for the citric acid cycle providing electrons to the electron transport chain.
