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B. Facilitated
Molecules move across the membrane
Molecular
Movement of glucose through a cell
diffusion
through channels or by carrier molecules from a region of higher concentration to one of lower concentration.
motion
membrane
C. Osmosis
Water molecules move from regions of higher concentration toward regions of lower concentration through a selectively permeable membrane.
Molecular motion
Distilled water entering a cell
D. Filtration
Smaller molecules are forced through porous membranes from regions of higher pressure to regions of lower pressure.
Hydrostatic pressure
Molecules leaving blood capillaries
II. Active (Physiological) Processes

Essentials of Human Physiology
This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.
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