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Lab 2 - Ex 4 & 5

Membrane transport definitions, epithelial & connective tissues

TermDefinition
kinetic energy energy of movement
concentration gradient the gradual difference in concentration of a solute in a solvent between two regions
uphill movement movement of a substance against its concentration gradient - from an area of lower concentration to an area of higher concentration
downhill movement movement of a substance with its concentration gradient - from an area of higher concentration to an area of lower concentration
equilibrium the condition of a system such that things are balanced
factors that effect diffusion rate particle size, temperature, and polarity
hydrophobic water-hating - does not mix with water (generally nonpolar)
hydrophilic water-loving - mixes with water (generally polar)
amphipathic a molecule with both hydrophobic and hydrophilic regions
osmosis the diffusion of water across a membrane
diffusion passive transport - net movement in and out of a cell across the membrane along a concentration gradient
isotonic the same concentration inside and outside
hypotonic lower concentration outside than inside
hypertonic higher concentration outside than inside
lysis the swelling, and eventual bursting, of a cell in hypotonic solution
crenation the "shriveling" of a cell in hypertonic solution
solute the substance being dissolved
solvent the substance 'doing the dissolving'
semipermeable permeable to some substances - letting some things through
epithelium membranous tissue of one or more cell layers closely packed together - covering of internal and external surfaces, including bodily cavities and vessels
connective tissue tissue characterized by the abundance of extracellular components (such as fibers and intercellular substances) - connects, supports, or surrounds other tissues and organs
squamous flat, pancake-like epithelial cells - wider than they are tall
cuboidal cube-like epithelial cells - about the same amount high as they are wide
columnar column-like epithelial cells - taller than they are wide
simple one cell layer (epithelium)
stratified more than one cell layer (epithelium)
adipose fat - a type of connective tissue
Created by: mlmathis