BIO 181 Test Bank 1 Short answer essay (BIO 181 Test Bank 1 Short answer essay)

Short answer essay: 1) Pancake-shaped cells explores the environment – moving filopodia with receptors extend from 2) Then in some area filopodia stop moving due to signal received (biochemical cascade 3) That area restructures to extend large, lamellipodium that pushes out against the plasma 4) When lamellipodium touches substrate cell-equivalent of super glue/adhesion plaque holds 5) Cell equivalent of a muscle (i.e. actin and myosin) assembles and attaches to adhesion plaque 6) The muscle c...

Short answer essay: 1) Pancake-shaped cells explores the environment – moving filopodia with receptors extend from cell surface all over cell and “sense” environment. (1 point) 2) Then in some area filopodia stop moving due to signal received (biochemical cascade changes cell in that area). (1 point) 3) That area restructures to extend large, lamellipodium that pushes out against the plasma membrane; the mechanism causing this is a new network of actin filaments. (1 point) 4) When l...