Select all of the true statements regarding non‑shivering thermogenesis.

a. Thermogenin decreases the proton gradient by enabling protons to reenter the mitochondrial matrix without taking part in ATP synthesis.
b. Without brown fat, or brown adipose tissue, it would be difficult for adults to maintain proper body temperature.
c. In non‑shivering thermogenesis, heat is dispersed from the energy produced in electron transport.
d. ATP synthase can be bypassed in brown adipocytes.
e. Norepinephrine stimulates the hydrolysis of fatty acids, which activate the uncoupler protein.

We can define thermogenesis as the method of production of lime or temperature that a living body generates, in biology it is studied that this does not occur in all animals, but is seen in so-called warm blood and some plants, there are three types of processes identified in animals:

NEAT: defined as thermogenesis that occurs without the presence of physical activity

DIT: defined as the thermogenesis that occurs with physical activity

EAT: defined as the thermogenesis that occurs with the consumption of food or diet

Thermogenesis under the thermogenin protein found in brown adipose tissue produces a disengagement of protons within the mitochondria, prevents ATP synthesis and is capable of inducing temperature with the flow of protons, it also intervenes by increasing glycolysis, lipogenesis and gluconeogenesis with which its final result in these processes is the production of energy. The effect of the sympathetic nervous system and thyroid hormones that can balance heat production without generating abnormal movements such as tremor is also recognized.

Thus we deduce that:

electron transport allows heat flow without causing tremors

Thermogenin is involved in allowing protons to enter the mitochondria and the ATP production process is carried out.

hydrolysis of fatty acids occurs in the presence of norepinephrine

in brown adipocytes ATP synthase can be avoided