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cell membrane and cellular transport review
Terms in this set (29)
cell membranes determine what material enter and exit the cell. What is the term that describes this?
What are 3 functions of the cell membrane?
receive information concerning the cells environment, maintain structural, and maintain chemical relationships between neighboring cell.
What is the major constituent molecule of the cell membrane?
Describe the cell membrane
The cell membrane is a Phospholipid bilayer. The Phospholipid may move freely with the plane of the membrane.Proteins are also embedded in the membrane and perform many functions. Cholesterol is found within the membrane and stabilizes its structure.
Because phospholipids are free to move within the plane of the cell membrane, the membrane is often described as _____
What molecule within the cell membrane are capable of carrying out life functions?
What is the molecule within the cell membrane that is responsible for stabilizing the cell membrane when it is heated or cooled?
What term means a mole will move towards water? what term means a molecule will move away from water?
Hydrofelik - move towards
Hydrophobic - moves away
which structure is a phospholipid?
which structure is a cholesterol molecule?
Which structure is a protein?
Which structure is a hydrophobic portion of a molecule?
Which structure would move toward water molecules?
What is the process by which solute molecules move from areas of high concentration to areas of low concentration?
What is the random movement of molecules within a liquid due to kinetic energy?
What are 3 factors that will increase the rate of diffusion?
concentration, temperature, and pressure
Which cell transport mechanisms require energy?
Which transport mechanisms are specific?
Active transport, Facilitated diffusion
What transport process removes undigested material from the cell?
What transport process absorbs liquids to trap solute molecules?
What transport process engulfs solid material?
Which beaker contains a solution that would be lethal to both plant and animal cells?
If a crystal of potassium permanganate was placed in a Petri plate filled with water what molecular force will cause the purple color to spread outward?
Why will plant cells survive an environment low in solute while this will usually result in death of an animal cell.
Its cell wall
What structure enables single celled protists to live in fresh water?
What type of environment is deadly to both plant and animal cells?
Hypotonic solution environment
Why is unadvised to use twice the recommended amount of fertilizer on your favorite plant?
The fertilizer will dehydrate the grass because it creates a hypertonic environment
Why does salt-curing preserve meat?
If decomposers come to rot the meat the salt will suck the water out of themc ausing them to die
What is the name of the process in which large molecules can pass through the cell membrane in specific protein tunnels when in greater concentration outside the cell.
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