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Study Guide 1
16 cards·by sarah
Protist Cell Covering
mineral and protein matrix
What test made of
secreted or made from environment
Diflugia
test made by gluing particles together
Diatoms and Ceratam Redtide
Secreted test
Pellicle Covering
Only on some protist
Organisms with cell walls
bacteria, plants, seaweeds, and fungi
Chitin Cell Wall
Fungi
Cellulose
Bacteria, plants, seaweed
Main Function of cell wall
Rigid coat provides structure
Other functions of cell wall
adhesion to other cells in multicellular organism, mate recognition, and
enzymes-sometimes inbedded in cell wall
Cell Membrane
barrier between cytoplasm and the environment
Protein Channel
molecule moves through protein down concentration gradient
Protein channel performs
facilitated diffusion
Passive transport
diffusion of substance across a membrane with no energy
Active transport
energy used to move an ion or molecule across barrier against concentration gradient
Aquiporin
Protein channel for water