15 sample documents related to BISC 103LX

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  Bacteria

  USC BISC 103LX
  

  Bacteria 1. Diverse nutritional types are scattered among the major groups of bacteria 2. The two largest groups that are the protobacteria and the Gram-positive bacteria 3. Subgroup: Gamma Proteobacteria 4. Examples include sulfur bacteria such as chroma
   
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  Chapter 27 Notes

  USC BISC 103LX
  

  Chapter 27: Bacteria and Archaea: Prokaryotes are almost everywhere! 1. Most prokaryotes are microscopic, but even though they lack in size, they definitely make up for it in numbers 2. There are more prokaryotes present in a handful of soil than the numb
   
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  Diverse Nutritional and Metabolic Adaptations have evolved in prokaryotes

  USC BISC 103LX
  

  Diverse Nutritional and Metabolic Adaptations have evolved in prokaryotes 1. Phototrophs obtain energy from light 2. Chemotrophs obtain energy from chemicals 3. Autotrophs require carbon dioxide as their carbon source 4. Heterotrophs require an organic nu
   
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  Evolution of Viruses

  USC BISC 103LX
  

  Evolution of Viruses Viruses probably evolved as bit of cellular nucleic acid because they can only reproduce within cells. Plasmids, circular DNA, and transposons are candidates for source of viral genomes, they are all mobile genetic elements. Viral di
   
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  Fimbriae and Pili

  USC BISC 103LX
  

  Fimbriae and Pili 1. Some prokaryotes have something called fimbriae and pili, which allow them to stick to their substrate or other individuals in a colony 2. Fimbriae are hair-like protein appendages 3. They are also occasionally called attachment pili)
   
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  Fossil record

  USC BISC 103LX
  

  Fossil record Reveals major changes in the history of life on earth. Sedimentary rocks are the richest source of fossils and the layers are called strata. Fossil record not perfect as not all are expressed in fossils or have been discovered. Fossil recor
   
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  From Gene to Protein

  USC BISC 103LX
  

  From Gene to Protein(Chapter 17.1, 17.2, 17.4) The information content of DNA is in the form of specific sequences of nucleotides, genetic material. The DNA inherited by an organism leads to specific traits by dictating the synthesis of proteins Proteins
   
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  Genomes and their Evolution

  USC BISC 103LX
  

  Genomes and their Evolution(Chapter 21.1) Genomics is the study of whole sets of genes and their interactions Comparisons of genomes among organisms provide information about the evolutionary history of genes and taxonomic groups. Human Genome Project off
   
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  Protists

  USC BISC 103LX
  

  Protists(Chapter 28) Protist is the informal name of the kingdom of mostly unicellular eukaryotes. Advances in eukaryotic systematics have caused the classification of protist to change significantly so they are now five separate kingdoms. Protist are euk
   
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  Reproduction and Adaptation

  USC BISC 103LX
  

  Reproduction and Adaptation 1. Prokaryotes method of reproduction is through binary fission (they can divide every 1-3 hours) 2. Fastest prokaryote will reproduce in less than 20 mins 3. Known fact: at the rate of this reproduction going unchecked, a prok
   
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  Reproductive cycles of phages

  USC BISC 103LX
  

  Reproductive cycles of phages: two alternative mechanisms by which double stranded DNA viruses can reproduce. Lyctic cycle Process that culminates in the death of the host cell. Virulent phage is a phage that reproduces only by the lyctic cycle. Restrict
   
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  The History of Life on Earth

  USC BISC 103LX
  

  The History of Life on Earth(Chapter 25.1-25.4, 25.6) Macroevolution: Changes over large time scales shown by fossil records. Examples: Emergence of first terrestrial vertebrates The origin of photosynthesis Long term impact of mass extinctions Production
   
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  The rise and fall of dominant groups reflect

  USC BISC 103LX
  

  The rise and fall of dominant groups reflect: Continental drift: process in which plates move The Earth moves and in three occasions(1.1 BYA, 600 MYA, 250MYA) all of the landmasses of Earth came together and broke apart. Estimated to happen again in 250
   
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  Transcription and Translation

  USC BISC 103LX
  

  Transcription RNA synthesis is catalyzed by RNA polymerase, little mouse, which pries the DNA strands apart and hook together the RNA nucleotides. RNA synthesis follows the same base-pairing rules as DNA, except uracil substitutes thymine. Promoter is th
   
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  Viruses

  USC BISC 103LX
  

  Viruses(Chapter 19) Virus: Nucleic acid genome surrounded by a protein coat Viruses are simpler than a bacteria and are non living because they cannot reproduce or carry out any metabolic activities outside of the host cell. They only reproduce in the hos