Luminescence presentation
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The document discusses different types of luminescence including bioluminescence used by deep sea organisms. It then describes how luminol is used by crime scene investigators to detect trace amounts of blood, even if cleaning products were used. Finally, it mentions green fluorescent protein (GFP) which was used to win the 2008 Nobel Prize in Chemistry and is now used in medical research to track proteins in diseases like cancer and Alzheimer's.
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luminescence, fluorescence and example of fluorescence, phosphorescence , Jablonski diagram, Photoluminescence.
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BioluminenceKoustav Giri
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This document provides information about bioluminescence. It begins with an acknowledgement and definition of bioluminescence. There is then a brief history of bioluminescence research and discussion of its evolution in different organisms. The document explains that bioluminescence results from a chemical reaction between luciferin and luciferase, producing light. Examples of bioluminescent organisms are provided, as well as their uses in nature for camouflage, attraction, defense, and communication. Modern applications of bioluminescence in areas like biology, medicine, and the environment are outlined. The difference between bioluminescence and biofluorescence is defined. Recent research publications on bioluminesBioluminescent dinoflagellates
Bioluminescent dinoflagellatesSMA Insan Cendekia Al-Mujtaba
Ìý
This document summarizes bioluminescence and provides examples of bioluminescent organisms. It discusses how bioluminescence occurs widely in marine organisms through dinoflagellates, and describes the chemical process where luciferin reacts with luciferase in the presence of oxygen to produce light. Some functions of bioluminescence are as a sign of danger, attracting mates, and communication between organisms. Specific bioluminescent organisms mentioned include dinoflagellates, anglerfish, fireflies, glow worms, starfish, jellyfish, algae, squid, and brittle stars.Physiology of bioluminescense in insects
Physiology of bioluminescense in insectsLogeswaranMurugapand
Ìý
This document summarizes the physiology of bioluminescence in insects, specifically focusing on fireflies. It describes that bioluminescence results from a chemical reaction between luciferin and luciferase that produces light. In fireflies, this reaction occurs in specialized light organs and involves oxygen. Fireflies use bioluminescence for mating through signaling their species, sex, and location. The color of the light produced can vary depending on the chemical structure of oxyluciferin. Fireflies have visual receptors tuned to the wavelengths of light produced by their own bioluminescence.Bioluminescence
BioluminescenceSatarupa Deb
Ìý
This document discusses bioluminescence in marine organisms. It explains that bioluminescence occurs through a chemical reaction between luciferin and luciferase that produces light. Many deep sea animals use bioluminescence for communication, attraction of mates, and camouflage. The light produced is typically in the blue and green spectrum as those wavelengths travel farthest underwater. While bioluminescence provides benefits to marine life, humans cannot glow because we lack the necessary biochemical processes and genes involved in light production.bioluminescence
bioluminescenceArabinda Pal
Ìý
Bioluminescence is the production of light by living organisms. It occurs through a chemical reaction between luciferin and luciferase or photoproteins within photophores in organisms. Bioluminescence serves defensive, offensive, and communicative functions for marine creatures found throughout the water column. It has evolved as an adaptation for survival in the deep sea where little sunlight penetrates. Fluorescent proteins like green fluorescent protein are an important tool in research due to their ability to act as reporter genes and have commercial applications like bioluminescent crops.013 bioluminescence
013 bioluminescenceAnil Kumar
Ìý
1. The document discusses different types of bioluminescence in marine organisms including bacterial, intrinsic, and examples of organisms that exhibit each type such as fish, squid, and tunicates.
2. Bioluminescence is produced via the reaction of luciferase and luciferin in the presence of oxygen, producing light. It evolved in some organisms as a way to convert toxic oxygen into a non-toxic form with the side effect of producing light.
3. Organisms can control bioluminescence through mechanisms like blood flow to light organs or using shields to control light output for functions like reproduction, predator confusion, or prey attraction.
Chemiluminescence
Chemiluminescencesatyabrata sendh
Ìý
This document discusses luminescence and various types of luminescence including chemiluminescence. It provides examples of chemiluminescence in nature from fireflies, marine microorganisms, and anglerfish. The document then examines the chemical reaction underlying chemiluminescence and provides examples of its applications in forensic science, biomedical research, glow sticks, gas-phase reactions, and DNA hybridization detection.Luminescence presentation
- 1. From The Deep Sea to the Crime Lab Luminescence
- 2. Light Electrons are energized and photons are released to make light The electrons in higher orbitals emit a photon when they fall back to their original orbital Our eyes pick up the photons being emitted by the light source
- 3. Chemoluminescence - light produced by a chemical reaction Bioluminescence - light produced by a living organism Fluorescence - when light is absorbed and re-emitted at a different wavelength Phosphorescence - when energy is absorbed and re-emitted but over along period of time These are all examples of COLD light Luminescence
- 4. Bioluminescence Used in 90% of deep sea organisms and a few terrestrial organisms Used to find prey, hide, and communicate Mostly blue and green but some red light as well -- Why?
- 5. Uses for Bioluminescence Counterillumination Use of red light to see prey Lure prey Stun or confuse predators or prey Attract a mate Communication
- 6. How does it work?
- 7. Enzyme
- 8. Luciferins
- 9. So... We have seen how organisms can use luminescence... How can we use luminescence?
- 10. Luminol Used by crime scene investigators to detect blood The iron in blood acts like a catalyst to activate luminol, producing light Helpful in finding blood that may have been cleaned up because traces are left behind Bleach will react with luminol, showing if cleaning product has been used
- 11. Ìý
- 12. Green Fluorescent Protein Aequorea victoria Aequorin is the protein, which emits blue light when bound with calcium GFP absorbs the blue light and makes it green under UV light Osamu Shimomura, Marty Chalfie and Roger Tsien received the Nobel Prize in Chemistry in 2008 for their work with GFP Used so we can see where proteins are made and where they end up helpful in cancer, Alzheimer’s, and HIV research
- 13. Ìý
- 14. Brainbow