___ is a series of discontinuous ON/OFF signals transmitted electrically.

Catabolism releases energy from food molecules.

___ transmission is an electrical transmission method consisting of a pure audible tone where the duration of the tone is proportional to the measurement value.

The respiratory membrane and respiratory mucosa are two names for the same structure.

In the absence of oxygen, pyruvic acid is converted into

Convection is the

The respiratory tree is the structure used by the respiratory system to distribute air.

What was the purpose of the agora in Roman cities?

Bile begins the digestion of fat by emulsifying large fat droplets into smaller fat droplets.

The function of mucus in the saliva is to