Cht 10 Flashcards
Similarities: plant vs animal cells
Plasma (cell) membrane Mitochondria Ribosomes ER nucleus Golgi complex Ribosomes
Differences: plant cells have not animal
Cell wall -Cellulose -Lignin Central vacuole Plastids: chloroplasts, chromoplasts, amyloplasts Plamodesmata
Cell wall
Limits water movement
Maintains cell shape
Provides protection
-has CELLULOSE (poly) that is bonded together by LIGNIN provides strength (wood)
Central vacuole
Large vacuole in the center of the cell containing 95% water.
Where metabolism and digestion occurs.
Stores waste and pigments
90% of the cells volume
Plastids
Organelles that gather and store food or contain pigments.
Chloroplasts
Chromoplasts
Amyloplasts
Chloroplasts
Contain chlorophyll (green) pigments used in photosynthesis
Chromoplasts
Contains carotenoids (yellow, orange, or red) pigments (color of fall leaves)
Amyloplasts
Store starch (potatoes)
Plasmodesmata
Tiny channels in the cell wall that allow communication between plant cells.
The cytoplasm of one plant cell is continuous with adjacent cells
(Wick in an oil lamp)
Chloroplasts: double-layered membrane
Surrounds the chloroplasts (inner and outer membrane)
Chloroplasts: lamella
Parallel membranes that run the entire length of the chloroplasts
(Sun bathe)
Chloroplasts: grana
Multilayered, coin shaped discs (single disc= thylakoid) with high concentration of chlorophyll
Chloroplasts: stroma
Clear region in the chloroplast that lacks chlorophyll (liquid)
Electromagnetic spectrum
Range of radiation
Shorter wavelengths ——–>longer wavelengths
Higher energy—————–> lower energy
Purple. To. Red.
Types of pigments
Chlorophyll a: blue-green Chlorophyll b: yellow-green 3:1RATIO IN HIGHER PLANTS^^^ Accessory pigments: _ Carotenoids: yellow-purple Phycobillns: red or blue
