Lecture #3 Cells

when the solute is less than water

all the components in between the plasma membrane and the nucleus

solute is greater than water

maintains cell structure

Simple and facilitated diffusion, osmosis

moves ribosomes to the golgi; network of folded membranes

fluid containing water and dissolved subtances

DNA copies into RNA message

destroys, kills

Dissolving liquid (the liquid is doing the dissolving)

pushing out material from inside the cell to outside the cell.  Think: EXocytosis ; EXit

Replacing an old cell

mRNA is translated to make a protein (cytoplasm)

Inside cell membrane to support and maintain shape

amount of solute in a solvent

dissolving material

bringing material IN to the cell

difference in two areas of a solution

• 1.Interphase
• 2.Mitosis
• 3. Cytoskenesis

DNA doubles

division of the nucleus-nuclei

division of cytoplasm (cell movement)

phospholipid bilayer; polar heads, non polar tails

barrier between inside and outside of cell; controls what enters and leaves

• Ion Channel; specific ions pass
• Transport; shape changes
• Receptor; allows special molecules
• Cell Identity maker; recognizes eachother

microtubules emanate from these structures

important in cell division; near nucleus

movement limbs; inside cilia and flagella

Site of protein synthesis; makes energy; high content of RNA located in cytosol, ER, mitochondria

site of protein synthesis for export

no ribosomes; where lipids and steroids are made

modifies, transports and packages protein to transport

contains digestive enzymes; recycles cell parts

worn out organelles are digested

destroys entire cell

Power house of the cell; provides most of the cells ATP; where cell energy is made

Control center of the cell; contains DNA

site of ribosome formation

Allows movement in and out of the nucleus; has pores

• Transcription
• Translation
• Cell Division

regulates what enters and leaves the cell