SCENARIO 13-8 -

question 4

Multiple Choice

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Definitions:

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To persist in an activity or process.

Genes

Segments of DNA located on chromosomes that carry the instructions for making proteins, crucial for determining the traits and functions of an organism.

Neurotransmitters

Chemicals that are released by neurons and that affect the activity of other neurons.

Cigarettes

Thin cylinders of finely cut tobacco rolled in paper for smoking, known to contain harmful substances and are associated with health risks like cancer.