Examlex
Which of the following structures allows a bacterium to propel itself through its environment?
Endorphins
Natural chemicals in the body that fight pain and promote feelings of pleasure and well-being.
Marijuana
A psychoactive drug from the Cannabis plant used primarily for medical or recreational purposes.
Suprachiasmatic Nucleus
A small region of the brain in the hypothalamus, responsible for controlling circadian rhythms.
Spinal Cord
A major part of the central nervous system which extends from the base of the brain through the vertebral canal and is responsible for transmitting nerve signals between the brain and the rest of the body.
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