BIO 1140 Lecture Notes - Lecture 10: Caspase, Apoptosis, Xylem
12 Aug 2016
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Apoptosis: the death of cells that occurs as a normal and controlled part of an organism"s growth or development. The corpses of dead cells are engulfed and eaten by neighboring cells. All adult nematodes have exactly the same number of cells. The fate of each of these cells can be tracked. Protease: an enzyme that breaks down proteins and peptides. Caspase: a protease involved in programmed cell death. Sometimes perfectly normal and healthy cells die by apoptosis! Cells that make up the xylem elements in vascular tissue of woody plants function as. Skeletons they must die to fulfill their function as water-conducting pipes. Developing fingers and toes are initially connected by tissue, but later some of these cells die by apoptosis results in separated fingers and toes. From caterpillar to butterfly, many tissues of the larva break down by apoptosis. Gene activation in response to molecular signals from receptors on the surfaces of marked cells.
