BIOL165 Study Guide - Midterm Guide: Accessory Pigment, Glaucophyte, Red Algae
6 May 2014
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Document Summary
Eukayotic algae are members of the kingdom protoctista. Cyanobacteria (blue-green algae) are prokaryotic bacteria in domain bacteria. Chloroplast aka plastid (the chlorophyll containing organelle) originate from endosymbiotic cell of a prokaryotic cyanobacteria. Phyla of algae acquired their chloroplast by capturing red alga (20 event; 4 or 3 membranes) or chromistian alga (tertiary capture event; 4 membranes) Chlorophyll and accessory pigments to convert solar energy to chemical energy. The host cells for chloroplasts belong to different supergroups of protoctistians. Life cycles varies and may include both asexual and sexual phases. Choloplasts enclosed by double membranes (shared trait with. Rhodophyta; thylakoid occur in stacks of 2-6; chlorophylls a,b not masked by accessory. Chloroplast source: seconday/tertiary capture- 3 membranes around plastid. Trichocysts on cell surface (organelles that explosively discharge threads when stimulated) Two flagella are present (one in the middle so it can spin on axis and another flagellum for steering) Chloroplast source: secondary capture- 3 membranes around plastid.
