The fight-or-flight response in humans is activated by epinephrine, a hormone secreted by the glands.

The correct answer would be adrenal gland.

Epinephrine or adrenaline is the enzyme secreted from medulla of the adrenal gland.

Epinephrine enzyme prepares a person for fight and flight situations.

It acts on sympathetic nervous system and increases the cardiac output of a person, blood flow towards the muscles, pupil dilation response, and blood glucose levels.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

your answer is true

i am 100% sure

explanation: