Lecture 4 Flashcards
Cellulose-based covering outside the cell membrane
Cell wall
Organisms with Chitin-based cell walls
Fungi
Organisms with peptidoglycan
bacteria
Function of the cell wall
Maintains shape
Cell-to-cell interface
Intercellular communications
Layers within plant cell walls
Primary, secondary, and middle lamella
The first layer of the cell wall to be formed
Middle lamella
Outermost layer of the cell wall and binds two adjacent walls
Middle lamella
Layer of the cell wall that is elastic
primary cell wall
Thicker and stronger layer
Secondary Layer
Layer with low microfibril
S2
Layer with higher microfibril angles
S1 and S3
Where is Xylem found
Secondary cell
Depression in plant cells
Pits
Contemporary pits
Pit pairs
Shape of chloroplast
Biconvex or planoconvex in shape
Chloroplasts are a member of what group
Plastids
Who discovered plastids
Ernst Haeckel