The hypothalamus is our brain's appetite control center.
a. true
b. false

A

Explanation:

Hunger, fullness, and energy balanced are regulated by the hypothalamus. Hunger and fullness signals, in the form of hormones, travel through the bloodstream from tissues that consume energy to the brain. The hypothalamus is the region where these neuronal and hormonal signals integrate. After the reception of this signals the hypothalamus orchestrates a signaling cascade containing other hormones to create the hunger sensation.

b

explanation:

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.