The Cell: Anatomy and Divison
Anatomy of the composite cell
1.Define the following terms:
"small organs"; are the metabolic machinery of the cell, and that are highly organized to carry out specific functions for the cell as a whole.
the structural and functional unit of all living things, is a complete entity.
2.Although cells have differences that reflect their specific functions in the body, what functions do they have in common?
Growing, reproducing, and responding to a stimulus are common functioning characteristics amongst all cells. In addition, all cells can maintain their boundaries, metabolize, digest nutrients, and dispose wastes.
3.Identify the following cell parts:
Plasma membrane - external boundary of cell; regulates flow of materials into and out of the cell; site of cell signaling
Lysosome - contains digestive enzymes of many varieties; "suicide sac' of the cell
mitochondria - scattered throughout the cell; major site of ATP synthesis
Microvilli - slender extensions of the plasma membrane that increase its surface area
Inclusions - stored glycogen granules, crystals, pigments, and so on
Golgi apparatus - membranous system consisting of flattened sacs and vesicles; packages protein for export
Nucleus - control center of the cell; necessary for cell division and cell life
Centrioles - two rod-shaped bodies near the nucleus; direct formation of the mitotic spindle
Nucleolus - dense, darkly staining nuclear body; packaging site for ribosomes
Microfilaments - contractile elements of the cytoskeleton
Rough ER or endroplasmic reticulum - membranous system; involved in intracellular transport of proteins and synthesis of membrane lipids
Ribosomes - attached to membrane systems or scattered in the cytoplasm; synthesize proteins
Chromatin or Chromatin - threadsthreadlike structure in the...