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How do organisms get energy?
How do organisms get energy?

... • Consumer – an organism that eats other organisms ...
Lecture 5 (1)
Lecture 5 (1)

... Prokaryotic modes of nutrition Based on Carbon source and Energy source that can be used by a prokaryote organism to synthesize organic compounds. ...
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Introduction to Cell Culture

... Introduction to Cell Culture ...
Autotroph or Heterotroph
Autotroph or Heterotroph

... Thermus aquaticus: Thermophiles These are bacteria from hot springs and other high temperature environments. Some can grow above the boiling temperature of water. They are anaerobes, performing anaerobic respiration. Thermophiles are interesting because they contain genes for heat-stable enzymes th ...
The Birth of the Nucleus
The Birth of the Nucleus

... proteins that are modified and shipped out of the nucleus to build ribosomes. The picture is far different in bacteria, in which DNA, RNA, ribosomes, and proteins operate together within the main cell compartment. It’s a free-for-all in that as soon as the DNA code is transcribed into RNA, nearby pr ...
The Birth of the Nucleus
The Birth of the Nucleus

... proteins that are modified and shipped out of the nucleus to build ribosomes. The picture is far different in bacteria, in which DNA, RNA, ribosomes, and proteins operate together within the main cell compartment. It’s a free-for-all in that as soon as the DNA code is transcribed into RNA, nearby pr ...
DNA Sequencing
DNA Sequencing

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The Five Kingdoms
The Five Kingdoms

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DNA Structure Questions
DNA Structure Questions

... 2. Briefly (three or four sentences) describe the Hershey/Chase experiment. 3. Understanding the chemistry of nucleic acids is becoming increasingly essential as the field of genetics becomes more focused on molecular aspects of genetic questions. On the trinucleotide shown below, label the followin ...
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Prokaryotes and Eukaryotes (3 Lectures)
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Why do living things needs energy? Where do they get it?
Why do living things needs energy? Where do they get it?

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Unique properties of hyperthermophilic archaea

This article discusses the Unique properties of hyperthermophilic archea. Hyperthermophiles are organisms that can live at temperatures ranging between 70 and 125 °C. They have been the subject of intense study since their discovery in 1977 in the Galapagos Rift. It was thought impossible for life to exist at temperatures as great as 100 °C until Pyrolobus fumarii was discovered in 1997. P. fumarii is an unicellular organism from the domain Archaea living in the hydrothermal vents in black smokers along the Mid-Atlantic Ridge. These organisms can live at 106 °C at a pH of 5.5. In order to get energy from their environment these organisms are facultatively aerobic obligate chemolithoautotrophs, meaning these organisms build biomolecules by harvesting carbon dioxide (CO2) from their environment by using hydrogen (H2) as the primary electron donor and nitrate (NO3−) as the primary electron acceptor. These organisms can even survive the autoclave, which is a machine designed to kill organisms through high temperature and pressure. Because hyperthermophiles live in such hot environments, they need to have DNA, membrane and enzyme modifications in order to withstand the intense thermal energy. Such modifications are currently being studied to better understand what allows an organism or protein to survive such harsh conditions. By learning what allows these organisms to survive such harsh conditions, researchers will be better able to synthesize molecules that are harder to denature that can be used in industry.
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