BIOL 1115 Chapter Notes -Sporangium, Meristem, Zooxanthellae
11 Feb 2014
School
Department
Course
Professor
Document Summary
Sex pilli: tube like structures: swapping plasmids (+ genes from surroundings) Fimbriae: hair like bristles- adhesion to surfaces. 3 strands of flagellum wound in helix, inserted into hook/basal. Binary fission: cloning of cell into daughter ones (quick way of division) Budding: cell grows in size and splits (not genetically identical) Conjugation: sex pilus forms between 2 cell: gen. mat. exchanged. Transformation: bacteria picks up free pieces of dna, get. Transduction: bacteriophages (=vectors) carry bits of bact. Endospores: (response to unfavorable conditions)- dormant stage. Can live 100 years in state, then re-vitalize. Frequent cause of contamination, issue in hospitals. Obligate aerobes: only capable of growth in presence of o2. Obligate anaerobes: unable to grow in presence of o2. Facultative anaerobes: able to grow with or without o2 present. Phototrophs: photosynthetic (energy from sun)- some do not produce o2. Some use solar energy to reduce co2 into organic compounds.
