Terms in this set (21)
The smallest unit capable of carrying out life
1. All living things are composed of one or more cells.
2. In organisms, cells are the basic units of structure and function.
3. Cells are produced only from existing cells.
Plasma Membrane or Cell Membrane
Composed of a lipid bilayer, it regulates material entering and leaving the cell (gate keeper).
Gel like substance in which the organelles are suspended
The part of a eukaryotic cell surrounded by a nuclear membrane which contains the DNA
Located inside the nucleus, it contains DNA-RNA from which ribosomes are made
Regulates what enters and leaves the nucleus
In nucleus, composed of DNA and proteins that form rod shape structures prior to cell division
Found in nucleus, combination of DNA & histone proteins that forms chromosomes
1. Breaks down glucose to produce ATP for energy (cell respiration).
2. Contain their own circular DNA
Rough Endoplasmic Reticulum
1. Channel network for moving proteins and lipids
2. Ribosomes and attached to this organelle
Site where proteins are synthesized (manufactured/made)
Flat membrane bound sacs which modify sort and package cell products such as proteins/lipids
Packaged cell secretions (hormones, neurotransmitters) at the Golgi apparatus. Transported to the cell surface for release
Membrane bound organelle that contains enzymes which digest food and worn-out cell components inside the cell
1. Protein fibers that provide cell shape and allow for internal cell movement
2. Made of microfilaments, microtubule & actin filaments
Short projections from the cell made of microtubules that are motile and designed either to move the cell itself or to move substances over or around the cell (many found surrounding the cell)
Long projections from the cell made of microtubules that are motile and designed either to move the cell itself or to move substances over or around the cell (usually only one or two found coming off the cell)
Cellulose Cell Wall
Found only in a plant cell. Tough fibrous material (cellulose) which provides structure and support for the cell
1. A large membrane-enclosed sac filled with fluid, food, or pigments
2. Plants have one large central vacuole that also serves as a disposal site and helps maintain turgor pressure.
3. Animal cells have these too, but usually much smaller
Membrane bound organelle in plants that converts light energy to chemical energy (photosynthesis).