Cyanide Poisoning Quickly Leads to Death Because It Blocks the Final

question 7

Multiple Choice

Cyanide poisoning quickly leads to death because it blocks the final cytochrome molecule in the electron transport system. Why is this blockage lethal?

• A) All hydrogen ion pumps deactivate.
• B) NADH molecules cannot give off their electrons.
• C) FADH₂ molecules cannot give off their electrons.
• D) Electrons cannot transfer to oxygen.
• E) Coenzyme Q disassociates and becomes nonfunctional.

---

Definitions:

Alarm

A response mechanism or device designed to warn or alert of a potential or existing danger.

Catecholamines

A group of neurotransmitters, including dopamine, norepinephrine, and epinephrine, that play key roles in the body's stress response and regulation of mood.

Heart Rate

Heart rate is the number of heartbeats per unit of time, typically expressed as beats per minute (bpm), indicative of cardiovascular health and physical state.

Digestive Processes

The physical and chemical actions that the body employs to break down food and absorb nutrients.