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Study Guide Questions

1.     What are the molecules that largely make up the cell membrane?
2.     What is the region containing phospholipids that are attracted to water?
3.     What is the region containing phospholipids that are not attracted to water?
4.     ____________________ is a group of oily , organic chemicals that are insoluble in water, but soluble in alcohol.
5.     Proteins within the cell membrane that perform specialized functions, such as providing a physical binding site, speeding up chemical reactions, allowing for intercellular junctions, and maintaining cell shapes are known as ___________________ ________________.
6.     Proteins embedded within the phospholipids, and which assist in the passage of substances are ___________________ ___________________.
7.     _______________________ _________________________ are the processes that enable substances to enter and exit the cell membrane.
8.     _______________________ _____________________ is a cellular transport process that requires only kinetic energy to push substances through the cell membrane. Substances move down a concentration gradient from an area of higher to lower concentration or pressure.
9.     ______________________ _________________________ exists when particles are in higher concentration in one area, but lower in concentration as one moves to the neighboring areas.
10.     The net movement of certain particles from an area of higher concentration to an area of lower concentration is known as _____________________.
11.     ______________________ is achieved when the rate of particle spreading is even throughout a given area.
12.     What is movement of water molecules across a selectively permeable membrane from an area of higher to lower concentration of water until an equilibrium is reached?
13.     What type of solution has the same total concentration of solute as compared to another solution?
14.     __________-__________ _____________ has a lower total concentration of solute particles, as compared to another solution.
15.     ______________-_______________ __________________ has a lower total concentration of solute particles, as compared to another solution.
16.     What is the Greek name for "to stretch?"
17.     The net force of water moving down its concentration gradient is _______________ ______________.
18.     Diffusion of molecules across a selectively permeable membrane, aided by specific membrane transport proteins is known as _______________ ________________.
19.     The cellular transport process that requires the use of energy provided by the cell is known as _________________ _______________.
20.     _________________ __________________ is a form of energy that the cell uses for active cellular transport.
21.     What is the movement of various molecules across the cell membrane, often from a region of lower to higher concentration?
22.     ______________ _________ ______________ is the simultaneous movement of two substances, one of which is sodium, across the cell membrane.
23.     ______________ (_________________) is the secondary active process moves sodium and a second substance, going in the same direction, through a protein pump.
24.     ________________ (_________-________) is the secondary process that moves sodium and a second substance, going in the opposite direction direction, through a protein pump.
25.     What is the name of a "cell eating" movement of solid particles through the cell membrane?
26.     What is the name of a "cell drinking" movement of fluid particles into the cell by the infolding of the cell, forming a pinocytotic vesicle.
27.     ________________ _______________ _____________ is a method whereby specific substances enter the cell because of the presence of receptor sites on the extracellular side of the cell membrane; with the infolding, an endocytotic vesicle is created.
28.     _______________________ is the exportation of a substance from the cell; vesicles within the cell fuse with the membrane and expel its contents into the extracellular fluid.
29.     Exocytosis of waste substances is known as ___________________.
30.     Exocytosis of useful substances is ____________________.
31.     ______________ ______________ puts a separation of charge along the cell membrane.
32.     What is the name of the theory that explains the interaction of the phospholipids and proteins as they drift about each other in a lateral direction, forming the cell membrane?
© Educational Video Network, Inc. 2005 - www.evndirect.com
Your leading source for curriculum-based educational videos and DVDs.