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Lab 4:the Cell: Anatomy and Divison Essay

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Lab 4

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...

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