Examlex
The first step of the urea cycle involves which of the following substances?
Biological Clocks
Internal mechanisms that regulate the timing of biological processes and behaviors, aligning them with daily and seasonal rhythms.
Cholecystokinin
A hormone secreted by the small intestine that aids digestion by stimulating the gallbladder to contract and release stored bile into the intestine.
Core Body Temperature
The temperature of the internal environment of the body, which is maintained within a narrow range despite external temperature changes.
Delta Waves
Brain waves with a frequency of 1-4 Hz that are associated with the deepest stages of sleep and brain development in young children.
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