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
Determines the color of plant cells
Pigments
Incorporation into the plant cell
Endosymbiosis
Fluid-filled space within the chloroplast
Stroma
Contains chlorophyll
Thylakoid
Collectively stacked thyllakoid
grana
Main photosynthetic pigment in a chloroplast
Chlorophyll
Absorbs red and blue
Chlorophyll
Absorbs violet to blue-green specturm
Carotenoids
With oxygen
xanthophylls
Oxygen is absent
Carotenes
Primary cell walls contain all of the following except (Chlorophyll, Pectin, Cellulose, and Hemicellulose)
Chlorophyll
Secondary walls are
thicker and stronger than primary cell walls
Older than primary cell walls
Contain less to no proteins
Phase where middle lamella is created
Cytokinesis
Main photosynthetic pigment
Chlorophyll A
Where does light-independent reaction take place
stroma
Where does light-dependent reaction take place
Thylakoid membrane
Synthesizes amino acids for protein synthesis
Proplastids
Synthesis and storage of starch, lipids, and proteins
Leucoplasts
Organelle responsible for starch biosynthesis and storage
Amyloplast
Help in synthesis of proteins in plant cells
Proteinoplasts
Synthesis and storage of fatty acids, trapezes, and other lipids
Elaioplast
Helps direct many early developmental processes, such as those in expanding and greening leaf
Etioplast
Imparting color to certain parts of plants as flower petals, fruits, some roots, etc.
Chromoplast
Uses for nutrient recycling as well as the development of other organelles
Chromoplasts
Eats algae or aquatic plants and steal the undigested chloroplasts
Kleptoplasts
Suggests that photosynthetic bacteria was acquired by early eukaryotic cells to form the first plant cells
Endosymbiosis theory