BIOL 1101 Study Guide - Midterm Guide: Fungi Imperfecti, Asexual Reproduction, Vascular Plant
15 Apr 2015
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Protists: evolved approximately 1. 5-2 billion years ago, evolved through endosymbiosis, there was a prokaryotic cell that ingested an aerobic bacteria which became endosymbiotic. Contractile vacuole: pumps water out to prevent cell lysis in freshwater. Pellicle: layer of supportive protein fibers under plasma membrane. Pseudopodia: lobes of cytoplasm for amoeboid movement: reproduction, asexual by mitosis, sexual by meiosis, some both distinct life cycle. Protozoa ingest food and move: disk-shaped mitochondrial cristae. Smooth and hairy : mostly on eggs and sperm. Single celled: move by stiff, filamentous pseudopodia, many produce hard outer shells. Single posterior flagellum: group also includes animals and fungi. Life cycle of brown alga: chloroplasts and other plastids in protists and land plants resulted from endosymbiotic events, primary endosymbiosis, secondary endosymbiosis. Absorptive nutrition: fungi secrete enzymes into their environment, enzymes break down large molecules, products absorbed into their cells. Hyphae grow outward by growth at many tips. Permit cytoplasm and organelles to move between hyphal cells.
