Examlex
Erection is the result of a sympathetic reflex activity.
Facilitated Diffusion
A process of passive transport, with no energy consumption, where molecules move across a cellular membrane via protein channels.
Active Transport
The movement of substances across a cell membrane against a concentration gradient, requiring energy.
Bulk Flow
A movement of molecules from an area of higher pressure to an area of lower pressure, typically referring to fluids and gases.
Adenine
A purine nucleobase, one of the four nucleobases in the nucleic acid of DNA and RNA, paired with thymine in DNA and with uracil in RNA.
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