Ricin is a toxic protein found in castor oil plant seeds. The toxicity of Ricin has been known for centuries and was even used by the KGB government to assassinate Georgi Markov‚ a famous journalist who openly criticized the Soviet Union’s communist regime. The toxicity of ricin is caused by its ability to deactivate ribosomes and halt protein synthesis. Therefore‚ Ricin is categorized as a ribosome inactivating protein (RIP). There are two types of RIPs: type I and type II. Type I RIPs are usually
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Age Range 0-3 Months Many babies are born around the 40th week are born with reflexes which include swallowing and sucking reflex this is so they can swallow milk and in conjunct with that they also have the rooting reflex they move head from side to side in order to find the nipple or the teat. They also have the grasp reflex and standing and walking reflex. When first born they sleep a lot but after one month they start to become more observant and stay awake longer. Babies start to look
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The occurrence of strong and coordinated contractions (mass movements) allows the migration of stool from distal colonic segments into the rectum. These contractions occur more frequently in the morning after awakening and after a meal (gastrocolic reflex). In contrast‚ colonic motility is reduced at night to avoid incontinence (Andrews & Storr‚ 2011) The volume and consistency of the feces are other important factors affecting anal continence. Leakage of gas or liquid stools is more difficult to
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Practice Exam #4 – Chapters 12‚ 13‚ 14 & 15 1) What would normally be found within the central canal of the spinal cord? a) Blood b) Myelin c) Cerebrospinal fluid d) Air e) Gray matter 2) The filum terminale is a) The roots of spinal nerves hanging inferiorly from the end of the spinal cord in the vertebral column b) An indentation on the dorsal side of the spinal cored c) The tapered end of the spinal cord d) An extension of the pia mater that anchors the spinal cord to the coccyx
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Boy Scouts. All of my dive training and practice dives have led to this day. Will I be successful? The day starts at 7:45 am. The dive group meets at the flagpole to recite the Pledge of Allegiance and say Grace. Upon dismissal‚ we proceed to the Mess Hall for a hearty breakfast of eggs‚ bacon‚ and cereal. Upon taking the last bite‚ I thought to myself‚ I hope this is not my last meal. If so‚ I wish we were eating spaghetti for breakfast. After clean-up‚ Terrence‚ our Dive Master‚ leads us to
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The Nonsynonymous/Synonymous Substitution Rate Ratio versus the Radical/ Conservative Replacement Rate Ratio in the Evolution of Mammalian Genes Kousuke Hanada‚* Shin-Han Shiu‚ and Wen-Hsiung Li* *Department of Ecology and Evolution‚ University of Chicago; and Department of Plant Biology‚ Michigan State University There are 2 ways to infer selection pressures in the evolution of protein-coding genes‚ the nonsynonymous and synonymous substitution rate ratio (KA/KS) and the radical and conservative
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hand‚ most Gram-negative bacteria were not affected by teixobactin with the exception of E. coli asmB1. When further research was done‚ it was discovered that teixobactin is not harmful to mammalian NIH/3T3 and HepG2 cells‚ even when tested at its highest dose. Therefore‚ teixobactin could be used to treat mammalian diseases. Evidence that supported teixobactin was a peptidoglycan synthesis inhibitor was found when the researchers ran tests using label incorporation in the bacteria S. aureus. The tests
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The Blue Brain Project by Serge Achildi The Blue Brain Project is an attempt to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. An effort to create the first computer simulation of the entire human brain‚ right down to the molecular level‚ was launched on June of 2005. The hope is that the virtual brain will help shed light on some aspects of human cognition‚ such as perception‚ memory and perhaps even consciousness. The "Blue Brain" project‚ a
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Classical conditioning is sometimes referred as CC. Classical conditioning involves learning by association. It contains a neutral stimulus‚ which is a stimulus that does not evoke the reflex to be conditioned. However‚ it could evoke other reflexes. After neutral stimulus‚ there is unconditioned stimulus that evokes a reflex without the
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1. Understand what is the same about all life‚ and what makes life diverse LOCS A. List the five characteristics all organisms on Earth share B. Explain why the first four are required for life C. Differentiate heterotrophs and autotrophs 2. Understand that energy to sustain life is derived from chemical potential energy LOCS A. Relate the distance of electrons from their protons to the concept of chemical potential energy B. Define exergonic and endergonic chemical reactions
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