Which of the Following Is Not Considered a Type of Biometrics

question 1

Multiple Choice

Which of the following is not considered a type of biometrics?

• A) Voice
• B) Face
• C) Iris
• D) None of the above

---

Definitions:

Acetylcholine

A neurotransmitter important for brain and muscle function, involved in arousal, attention, memory, and motivation.

Serotonin Antagonist

A type of drug that blocks serotonin receptors, affecting mood, appetite, and other functions.

Inhibitory Postsynaptic Potentials

Hyperpolarization of a neuron's membrane potential, making it less likely to fire an action potential.

GABA

Gamma-aminobutyric acid, an inhibitory neurotransmitter in the central nervous system that reduces neuronal excitability throughout the nervous system.