most compounds that contain carbon
compounds that do not contain carbon (few exceptions like carbon dioxide)
large organic compounds made of carbon, hydrogen, oxygen, nitrogen and occasionally sulfur
smaller molecules-can become thousands of different proteins when combined
energy-rich, organic compounds made from carbon, hydrogen and oxygen
energy-rich organic compounds, such as fats, oils, and waxes, that are made of carbon, hydrogen, and oxygen
large, organic molecules made of hydrogen, nitrogen, carbon, and phosphorus
protein substances that speed up chemical reactions.
A property of cell membranes that allows some substances to pass through, while others cannot.
to pass through
process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated
diffusion of water molecules through a selectively permeable membrane
The movement of materials through a cell membrane without using energy
the movement of materials through a cell membrane using energy
another form of active transport in which the cell surrounds a particle and forms a vacuole within the cell