Ppt

Bio1151 Chapter 6 A Tour of the Cell

All organisms are made of , which are either or .
Cells are generally and can only be visualized through microscopes.
Their small size enables them to have a high area to ratio, to facilitate the exchange of materials into and out of the cell.
Eukaryotic cells have membrane-bound and can be grouped into 2 main types: animal cells and plant cells.
Cells exercise:
The contains most of the material in the cell, and is bounded by a nuclear with many nuclear .
The endoplasmic (ER) is continuous with the nuclear .
The apparatus is the cell's "Shipping and Receiving Center".
The contains enzymes to carry out intracellular digestion by (cell eating ), and breaks down damaged organelles by (self eating ).
The membrane-bound organelles involved in cellular transport form the system.
are the cell's "power plant" and perform cellular .
perform in some plant cells.
Plant cells also contain a large central , which stores organic compounds and water.
The is a network of fibers which provides for the cell, and enables .
- help maintain cell , and guide the movement of cell components.
  - and use microtubules for motion in some cells.
- called and are protein filaments that function in cellular motility, such as the contraction in fibers.
  - Contraction of actin and myosin , together with sol-gel reversals, also result in crawling of a cell through the movements of .
  - Cytoplasmic in cells also involve microfilaments to circulate nutrients among organelles.
Review: Animal Cell Structure and Function. Cell types.

Review: Plant Cell Structure and Function. Differences.