Examlex
Which organelle consists of separate tiny sacs called cisternae?
Digestive System
A series of organs responsible for breaking down food into nutrients that can be absorbed by the body.
Pupils
The opening in the center of the iris of the eye, which regulates the amount of light that enters the eye to reach the retina.
Action Potential
A rapid, temporary change in electrical potential across a cell membrane, leading to the transmission of a nerve impulse along a neuron.
Electric Gradient
A difference in the electrical charge across a membrane, leading to a force that drives the movement of ions.
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