According to the Graph, What Is the Half-Life in Years

question 10

Multiple Choice

According to the graph, what is the half-life in years of ²²⁶Ra?

• A) 8000 years
• B) 6400 years
• C) 4800 years
• D) 3200 years
• E) 1600 years

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Definitions:

Neurotransmitters

Chemical messengers that transmit signals across a chemical synapse, from one neuron (nerve cell) to another target neuron, muscle cell, or gland cell.

Medulla

The lower part of the brainstem, controlling essential life-sustaining functions such as breathing, heart rate, and blood pressure.

Central Nervous System

The segment of the nervous system that includes the brain and spinal cord, tasked with processing sensory data and generating appropriate responses.

Peripheral Nervous System

The part of the nervous system outside the brain and spinal cord, including the nerves and ganglia.