LAB PRELIMS

• two man parts of the cell are plasma membrane and cytoplasm
• Plasma membrane is located in the outer boudery of cell and itnis composed of phospholipid bilayer, protein, cholesterok and other molecules. It serves as the "gatekeeper" of the cell.
• Cytoplasm is the portion of the cell in which water dissolved materials small cellular organelles are found
• Plasma membrane is imporant in establishing chemical chargw differentials
• Membrane is where the two major proteins were found, the peripheral protein and the integral protein
• Peripheral protein serves as the cell makers
• Integral protein fuctions as channels where specific materials can pass through them
• Inner fluid portion of the cell is known as cytosol
• Inner framework of the cell, called cytoskeleton
• Cytoskeleton is not visible under light microscope which consist of microtubules, microfilaments, and intermediate filaments
• Mictrotubules are made of the protein tubulin and are approximately 25 nanometer
• Intermediate filaments are composed of fibrous protein and are approximately 10 nm
• Microfilaments are made of actin and are approximately 8 nm
• Organelle means "small organ"
• Two types of organelles are the membranous and nonmembranous
• Mitochondria are rod-shaped organelles with a double membrane which the major fuction is to convert the stored chemical energy in molecules and adenosine triphosphate (ATP
• Robisomes are the smallest of the organelles and has the fuction to produce protein