Collection of living matter enclosed by a barrier that separates the cell from it's surroundings; basic unit of all forms of life.
What is a cell
100
Process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated.
What is diffusion
100
layer of two membranes that surrounds the nucleus of the cell.
What is the cell envelope
200
the center of the atom which contains the protons and neutrons in the cell's structure that contains the cell's genetic material (DNA) and controls the cell's activities.
What is the nucleus
200
a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane.
What is osmosis
200
the material of which the chromosomes of organisms other than bacteria (i.e., eukaryotes) are composed. It consists of protein, RNA, and DNA.
What is chromatin
300
Strong supporting layer around the cell membrane in plants, algae, and some bacteria.
What is the cell wall
300
the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
What is active transport
300
a minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division.
What is the Centriole
400
Thin, flexible, barrier around a cell; regulates what enters and leaves the cell.
What is the cell membrane.
400
the process by which cell develop in different ways to perform different tasks
What is cell specialization
400
a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport.
What is the Golgi apparatus
500
small particle in the cell on which proteins are assembled; made of RNA and protein.
What is a Ribosome
500
movement of specific molecules across cell membranes through protein channels
What is facilitated diffusion
500
a microscopic network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence.