CELL 1010 Lecture Notes - Lecture 1: Genetic Recombination, Phospholipid, Cytoplasm

• School: Tulane University
• Department: Cell and Molecular Biology
• Course: CELL 1010
• Professor: Dr.V

Document Summary

Structures evolved separately because of similar environmental pressures. Web of life -> key force is genetic recombination; important mechanism of evolutionary change: prokaryotes: inclusion of genes from unrelated sources. Conjugation- direct transfer of genetic material between bacteria while temporarily joined. Taxonomy: understanding of unity and diversity by grouping organisms by common ancestors. 3 domains: bacteria (prokaryotic, no or minimal introns lack of complicated phospholipids, present everywhere (omnipresent, archaea (prokaryotic, most primitive, but closer to eukaryotes, has introns like eukaryotes (intervening sequences between exons, present in extreme environments. Protista: unicellular organisms that don"t form tissue, any eukaryotic organism that isn"t a plant, animal, or fungus. Fungi: extracellular digestion (secrete digestive juices and absorb nutrients, cell wall made of chitin and other polysaccharides. Plantae: cellulose cell wall and use photosynthesis to obtain energy, animalia, no cell wall and use internal cellular respiration for energy. Prokaryotic: relatively simple, lack a nucleus, don"t contain membrane bound organelles, smaller than eukaryotic cells.