Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
cells
biology
| Term | Definition |
|---|---|
| cell theory | the theory that states that all living things are made up of cells, that cells are the basic units of organisms, that each cell in a multicellular organism has a specific job, and that cells come only from existing cells |
| cytoplasm | the region of the cell within the membrane that includes the fluid, the cytoskeleton, and all of the organelles except the nucleus |
| organelle | one of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function |
| prokaryotic cell | a cell that does not have a nucleus or cell organelles; an example is a bacterial cell |
| eukaryotic cell | a cell that has a nucleus enclosed by a membrane, multiple chromosomes, and a mitotic cycle |
| cytoskeleton | the cytoplasmic network of protein filaments that plays an essential role in cell movement, shape, and division |
| nucleus | in physical science, an atom's central region, which is made up of protons and neutrons |
| endoplasmic reticulum | a system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids |
| ribosome | a cell organelle composed of RNA and protein; the site of protein synthesis |
| golgi apparatius | a cell organelle that helps make and package materials to be transported out of the cell |
| vesicle | a small cavity or sac that contains materials in a eukaryotic cell; forms when part of the cell membrane surrounds the materials to be taken into the cell or transported within the cell |
| mitochondrion | in eukaryotic cells, the cell organelle that is surrounded by two membranes and that is the site of cellular respiration, which produces ATP |
| vacuole | a fluid-filled vesicle found in the cytoplasm of plant cells or protozoans |
| lysosome | a cell organelle that contains digestive enzymes |
| centriole | an organelle that is active during mitosis |
| cell wall | a rigid structure that surrounds the cell membrane and provides support to the cell |
| chromoplast | an organelle found in plant and algae cells where photosynthesis occurs |
| cell membrane | a phospholipid layer that covers a cell’s surface and acts as a barrier between the inside of a cell and the cell’s environmen |
| phospholipid | a lipid that contains phosphorus and that is a structural component in cell membranes |
| fluid mosaic model | |
| selective permeability | |
| receptor | a specialized sensory nerve that responds to specific types of stimuli |
| passive transport | the movement of substances across a cell membrane without the use of energy by the cell |
| defusion | |
| concentration gradient | a difference in the concentration of a substance across a distance |
| osmosis | the diffusion of water or another solvent from a more dilute solution (of a solute) to a more concentrated solution (of the solute) through a membrane that is permeable to the solvent |
| isotonic | |
| hypertonic | describes a solution whose solute concentration is higher than the solute concentration inside a cell |
| hypotonic | describes a solution whose solute concentration is lower than the solute concentration inside a cell |
| facilitated diffusion | the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins |
| active transport | the movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy |
| endocytosis | the process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell |
| phagocytosis | the process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food |
| exocytosis | the process by which a substance is released from the cell through a vesicle that transports the substance to the cell surface and then fuses with the membrane to let the substance out |
Created by:
zhenderson202
Popular Biology sets