Examlex
Which scientist believed that species gradually improved towards perfection due to "fluida"?
Active Transport
The movement of substances across cell membranes against a concentration gradient, requiring energy input typically from ATP.
Diffusion
The process by which molecules move from an area of higher concentration to an area of lower concentration, contributing to the movement of substances within and between cells.
Osmotic Pressure
The pressure that needs to be applied to a solution to prevent the inward flow of water across a semipermeable membrane.
Cytoplasm
The material within a living cell, excluding the nucleus, containing organelles in a fluid matrix.
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