When Molecules Move Through a Cell Membrane from an Area

question 38

Multiple Choice

When molecules move through a cell membrane from an area of greater concentration to an area of lesser concentration by way of a carrier protein,it is called

• A) osmosis.
• B) endocytosis.
• C) facilitated diffusion.
• D) exocytosis.

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Definitions:

Polar Covalent Bonds

A type of chemical bond where two atoms share a pair of electrons, but the electrons are not shared equally, leading to a distribution of charge.

Water Molecules

Water molecules consist of two hydrogen atoms and one oxygen atom bonded together, making up the liquid that is vital for all forms of life on Earth.

Specific Heat

The amount of heat energy that must be supplied to raise the temperature of 1 gram of a substance by 1°C.

Heat of Fusion

The amount of heat required to convert a solid at its melting point into a liquid without changing its temperature.