Ch. 3

protect DNA in cell: nuclear envelope(membrane around nucleus) , nuclear pores(allows passage) , nucleolus(contains ribosomes DNA)

folds and processes proteins: studded with ribosomes

Detoxifies cells & makes lipids

processes proteins and lipids [adds sugar tags] sorts and ships them

makes proteins: Ribosomal RNA combined with protein

digest old organelles/foreign materials: vesicles filled w acid & digestive enzymes

powerhouse [creates ATP] performs cellular respiration to make glucose to ATP, Co2, and water

keeps organelles in and everything else out [bouncer]

1) Phospholipid Bilayer [barrier between cell and environment] 2) Channel proteins allow certain molecules through 3) Glycocalyx attach to lipids and proteins for ID 4) Cholesterol adds structure

Hydrophobic regions are non-polar tails located inside the phospholipid bilayer. Hydrophilic regions are the polar heads facing outside the cell

Hydrophilic… / Hydrophobic…

maintains shape of the cell

Propels the cell/movement