The Cell Wall Flashcards
Plants, _ and many single-celled organisms have a wall
Fungí
Wall just outside of _
Membrane
Plant cell walls are constructed from a network of _
Cellulose fibers
Cellulose fibers are interwoven with more tangled _
Hemicellulose fibers
_ is a gluelike material
Pectin
Pectin sticks cell wall to _
Its neighbors
_ strengthens the cell wall and aids in growth
Protein
_ go straight through semipermeable cell membrane (2)
Oxygen
Carbon dioxide
Some larger molecules such as ionic molecules and nutrients can pass through membrane via
Channels
For larger molecules, cell creates a structure called a _
Vesicle
Vesicle is a membrane rhat encloses a molecule in order to _
Take it in or expel it
Some vesicles form within a cell and merge with the cell membrane to
Release their contents
(Exocitosis)
But in endocytosis vesicle forms at the cell membrane to _
Bring substance into cell
When molecules are coming from outside, cell membrane _
Forms vesicle around molecule
(Endocytosis)
- _ merges with incoming molecule
Lysosome
