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week 1

Week 1 Concepts
Across
force exerted by a substance in contact with another substance
import of material into the cell by formation of a membrane-bound vesicle
movement of substances across the membrane without the expenditure of cellular energy (2 words)
endocytosis of fluid
the diffusion process used for those substances that cannot cross the lipid bilayer due to their size, charge, and/or polarity (2 words)
reports a monitored physiological value to the control center
diffusion of water molecules down their concentration gradient across a selectively permeable membrane
form of transport across the cell membrane that requires input of cellular energy
Down
the physiological value around which the normal range fluctuates (2 words)
organ that can cause a change in a value
a mechanism that reverses a deviation from the set point (2 words)
molecule that binds with specificity to a specific receptor molecule
intensifies a change in the body’s physiological condition rather than reversing it (2 words)
is the endocytosis of large particles.
export of a substance out of a cell by formation of a membrane-bound vesicle
movement of a substance from an area of higher concentration to one of lower concentration
attracted to water