BIO 201
DIFFUSION= The movement of atoms or molecules from an area of higher concentration to an area of lower concentration. Atoms and small molecules can move across a cell membrane by diffusion.
OSMOSIS= Diffusion of fluid through a semipermeable membrane from a solution with a low solute concentration to a solution with a higher solute concentration until there is an equal concentration of fluid on both sides of the membrane.
SELECTIVE PERMEABLE MEMBRANE=a membrane (as a cell membrane) that allows some molecules to pass through but not others cell membrane, cyto-membrane, plasma membrane - a thin membrane (a double layer of lipids) enclosing the cytoplasm of a cell; proteins in the membrane control passage of ions (like sodium or potassium or calcium) in and out of the cell; "all cells have a cell membrane tissue layer, membrane - a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants
BROWNIAN MOTION= The random movement of microscopic particles suspended in a liquid or gas, caused by collisions with molecules of the surrounding medium. INDIA INK is added to water and the solution to magnify using the oil immersion lens. TOTAL MAG 1000 DEMONSTRATION 1
HYPERTONIC= Having the higher osmotic pressure of two solutions.
ISOTONIC=having the same or equal osmotic pressure
HYPOTONIC=having a lower osmotic pressure than a comparison solution
RED BLOOD CELLS=A cell in the blood of vertebrates that transports oxygen and carbon dioxide to and from the tissues. In mammals, the red blood cell is disk-shaped and biconcave, contains hemoglobin, and lacks a nucleus.
PLANT CELLS=a cell that is a structural and functional unit of a plant. the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals
SCIENTIFIC METHOD= method of investigation in which a problem is first identified and observations, experiments, or
OSMOSIS= Diffusion of fluid through a semipermeable membrane from a solution with a low solute concentration to a solution with a higher solute concentration until there is an equal concentration of fluid on both sides of the membrane.
SELECTIVE PERMEABLE MEMBRANE=a membrane (as a cell membrane) that allows some molecules to pass through but not others cell membrane, cyto-membrane, plasma membrane - a thin membrane (a double layer of lipids) enclosing the cytoplasm of a cell; proteins in the membrane control passage of ions (like sodium or potassium or calcium) in and out of the cell; "all cells have a cell membrane tissue layer, membrane - a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants
BROWNIAN MOTION= The random movement of microscopic particles suspended in a liquid or gas, caused by collisions with molecules of the surrounding medium. INDIA INK is added to water and the solution to magnify using the oil immersion lens. TOTAL MAG 1000 DEMONSTRATION 1
HYPERTONIC= Having the higher osmotic pressure of two solutions.
ISOTONIC=having the same or equal osmotic pressure
HYPOTONIC=having a lower osmotic pressure than a comparison solution
RED BLOOD CELLS=A cell in the blood of vertebrates that transports oxygen and carbon dioxide to and from the tissues. In mammals, the red blood cell is disk-shaped and biconcave, contains hemoglobin, and lacks a nucleus.
PLANT CELLS=a cell that is a structural and functional unit of a plant. the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals
SCIENTIFIC METHOD= method of investigation in which a problem is first identified and observations, experiments, or