BIOL 2030 Lecture Notes - Lecture 4: Pseudopodia, Cytoplasmic Streaming, Cilium
Document Summary
Cilia: hair like outgrowths from surface of cell. Cells with cilia look like hairy cells. Plasma membrane of the cell goes over the cilia so it is still contained in the cell: flagellar motion. Slower than cilia 72cm/h: amoeboid motion. Pseudopodia: a free form projection of the cell. Ciliary locomotion: cilium propels water parallel to the surface of attachment (surface of the cell, also, important for refreshing the water near the surface of the cell. This is so it can get more oxygen. Flagellar locomotion: a flagellum propels water parallel to the main axis of the flagellum, 2 main types of flagella, tractellum. This makes the cell body move towards the direction of the flagellum. Sessile: don"t move around, anchored in one spot. A flagellum that draws water toward and over the cell body. Brings food particles towards the organism: pulsellum. A flagellum that propels the cell in a cell body first direction.
