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Chapter 3 Cell Processes
15 words from Chapter 3 Cell Processes
15
Science
7th Grade
02/27/2012

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Term
mixture
Definition
combination of substances that do not change chemically but retain their own properties
Term
organic compound
Definition
compounds that contain hydrogen and carbon
Term
diffusion
Definition
passive transport when molecules move from an area where there are more of them to an area where there are less of them
Term
active transport
Definition
when transport proteins use energy to bind with particles and move through cell membrane
Term
inorganic compound
Definition
compounds made from elements other than carbon
Term
passive transport
Definition
movement of substances through a cell membrane without the use of cellular energy
Term
fermentation
Definition
process of releasing a small amount of energy without using oxygen
Term
enzyme
Definition
a type of protein that regulates nearly all chemical reactions in a cell
Term
osmosis
Definition
a type of passive transport that occurs when water diffuses through a cell membrane
Term
equilibrium
Definition
occurs when molecules of one substance are spread evenly throughout a substance
Term
endocytosis
Definition
process by which a cell takes in substances by surrounding it with its cell membrane
Term
exocytosis
Definition
process by which vesicles release their contents to the outside of the cell
Term
metabolism
Definition
total of all chemical reactions in an organism
Term
photosynthesis
Definition
process by which plants use light energy to produce a simple sugar from carbon dioxide and water
Term
respiration
Definition
process by which producers and consumers release stored energy from food molecules
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