Plant cells Flashcards
Whats a pit?
Moves things from cell to cell quickly
Whats plasmodesma?
strand of cytoplasm that makes cytoplasm continuous between cellsm making removal easy
Whats middle lamella
made of calcium perate like a glue that holds the cell together
Whats amyloplast
contains amylose and amylopectin storage for starch grains
Whats tonoplast?
tones the cell, selective membrane to the vacuole, lets water into the vacuole and stops it from expanding to the cell wall
Whats the vacuole
contains cell sap and keeps the cell turgid
Stores waste products and other substances changes in volume after turgidity
Describe microfibrils
Hydrogen bonds form between the OH on the Ch2OH and H
wound in helical arrangement around th ecell and stuck together with polysaccharide glue known as hemicelluloses and pectins
laid dow at different angles making it strong
What is pectin
important to middle lamella, acts as a cement
Describe cellulose
B glucose
1-4 glycosidic bonds formed from a condensation reaction
Straight chained
Linked together by H bonds to form microfibrils
Whats the role cellulose
structural molecule of plant cell walls
What are the properties of cellulose
Insoluble
hydrogen bonds between parallele cellulose gives strength
Criss cross arrangement makes the cell strong