Biology - Exam 2
Cells use these compartments composed of phospholipids for storage of various molecules in their cytoplasm that can be accessed when they are needed by cells
Process by which cells expel bulk quantities of materials such as wastes from the cell; fusion with the plasma membrane leads to release of contents outside of cell
Transports materials such as proteins and other substances within cells. Provides temporary storage of food, enzymes and waste products
Jelly-like substance in the cell that contains all organelles and provides a medium for most cellular processes
Organelle that houses a molecule that manages or controls all the cell functions in a eukaryotic cell
Closely stacked, flattened sacs containing chlorophyll (a green pigment that traps energy from sunlight and gives plants their green color); similar to mitochondria
Compartment within cells that contain enzymes that digest excess or worn-out cell parts, food particles and invading viruses or bacteria. Involved in the breakdown of phagocytized material.
Attaches to portions of the endoplasmic reticulum when bound to RNA molecules to mediate protein synthesis. Guide protein synthesis.
Compartment of viscous liquid that surrounds the chromosomes and nucleoli; also contains nucleotides and many proteins
Modifies/packages proteins for transport out of the cell; synthesizes macromolecules
Materials secreted externally to the cell that supports cells and tissues and participated in cell signaling
Produces lipids and serves for detoxification
Nuclear envelope or membrane
Composed of 2 phospholipid bilayers, contain transport proteins, and serves an important function to house and protect DNA
Provides support for the cell via three types of protein fibers. Consist of microtubules, intermediate filaments, and microfilaments.
Collection of DNA and protein in the nucleus of eukaryotic cells. Nuclear DNA exists as a complex of proteins.
Consist of hollow tubes which provide support for the cell and serve as tracks for motor proteins to transport materials through the cell
Small hair-like structures used for movement or sensing things in many unicellular microorganisms
Surrounds the cell separating it from the extracellular environment and surrounds most organelles
Long whip-like structures composed of proteins/motor proteins used for movement of cells
Composed of protein filaments that aid in providing support to the nuclear structure
Produces a usable form of energy for the cell and modulates cell death mechanisms
A complex selectively permeable organelle that surrounds the cell aiding in structural support, cell communication, and transport of vital molecules into the cell
Process by which cells take in large quantities of materials from the extracellular surrounding; vesicle is formed on the interior and pinches off cell membrane
A non-membrane bound structure; responsible for production of ribosomes which are required for protein synthesis
Forms channels across plasma membranes between cells to exchange materials and for cell communication. Responsible for communication between cells.