2008-12495 권성연 2014년도 2학기 신경과학 제출일자 11월 26일 Weekly Q&A (25) 1. Outline the steps involved in the presynaptic release of neurotransmitter. Why would the closure of a potassium channel in the presynaptic axon terminal change the amount of Ca2︎ entering and change the amount of neurotransmitter released? Serotonin(5-HT) receptor on the sensory axon terminals is a G-protein-coupled metabotropic receptor. Stimulation of this receptor leads to the production of intracellular second messengers‚ cAMP‚ which
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BRONSTED-LOWRY ACIDS AND BASES 1. The Bronsted-Lowry definition There are many definitions of acids and bases in existence‚ but the most useful one is the Bronsted-Lowry definition: An acid is a substance which can behave as a proton (re presented as a hydrogen ion‚ H+) donor. Any substance which contains hydrogen bonded to a more electronegative element can thus behave as an acid: HCl == H+ + Cl- H2SO4 == H+ + HSO4- A base is a substance which can behave as a proton acceptor. Any
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Name: Date: 17 Aug 2014 Instructor’s Name: Assignment: SCI103 Phase 1 Lab Report Title: Measuring pH Levels Instructions: Enter the Virtual Lab‚ and conduct the experiments provided before going out into the virtual field for additional research. Please type your answers on this form. When your lab report is complete‚ submit it to the Submitted Assignments area of the Virtual Classroom. Part I: Answer the following questions while in the Phase 1 lab environment. Section 1:
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Keghan Chapter 8 MULTIPLE CHOICE QUESTIONS Topic: Structure Elucidation 1. An alkene adds hydrogen in the presence of a catalyst to give 3‚4-dimethylhexane. Ozonolysis of the alkene followed by treatment with zinc and acetic acid gives a single organic product. The structure of the alkene is: CH3 A) CH3CH=C-CHCH2CH3 (cis or trans) CH3 CH3 B) CH3CH2C=CCH3 (cis or trans) CH2CH3 C) CH3 CH2=CCH2CHCH2CH3 CH3 CH2 D) CH3CH2CCHCH2CH3 CH3 CH3 E) CH3CH2CHCHCH=CH2
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Cari’s Story A.) How could an infection in Cari’s nasal passages and pharynx spread into her sinuses? The infection in Cari’s nasal passages and pharynx was able to spread into her sinuses due to the sinuses being a drainage area for the nasal passages. B.) What is the couch reflex? Describe the process that Cari’s respiratory system is using to clear her lungs by coughing. The cough reflex is used to clear sputum and irritants that are in the nasal passages and pharynx. There are cilia in
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stability and reaction is also different. DNA is more stable and less reactive than RNA because of the deoxyribose sugar’s C-H bonds. It is stable in alkaline conditions; DNA has smaller grooves‚ which makes it harder for enzymes to “attack.” RNA is more reactive because of the ribose sugar’s C-OH‚ hydroxyl‚ bonds. Unlike DNA‚ it is not stable in alkaline conditions and has larger grooves‚ which allows it for the enzymes to “attack” easier. 2. Describe the structure and the role of the 3 types of RNA
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4‚ concrete batching plant apparatus mixer truck concrete pump‚ the aggregate can be recycled after the cleaning of the pump‚ and pump and dosing machine‚ the washing water can also be recycled or re-neutralization treatment and then use do high alkaline water zero emissions;Mixing plant
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Name: Tashay R. Sirjue Subject: Communication Studies Teacher: E. Foster Theme: Socio-Economic Issues Topic: Water Pollution in the Jamaican Society “One hundred and fifty years ago‚ the monster began‚ this country had become a place of industry. Factories grew on the landscape like weeds. Trees fell‚ fields were up-ended‚ rivers blackened. The sky choked on smoke and ash‚ and the people did‚ too‚ spending their days coughing and itching‚ their eyes turned forever toward the ground. Villages
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transmission will be. However from looking at the results an optimum pH is unidentifiable. This is because the range of pHs used in the experiment is limited from 4.0 to 8.0; the percentage transmission may have continued to decrease as the pH became more alkaline. On the other hand from the pHs used we can deduce that the optimum is 8.0 as it gives the lowest percentage transmission which shows that the enzyme is more effective in this condition and breaks down the jelly more effectively than when it is in
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1. Title: The Process of Determining the Unknown Bacteria #9 Rachel Judecki July 5‚ 2011 2. Introduction: Each student was given unknown bacteria and was instructed to perform a variety of experimental tests that would help to identify their bacteria. During the process of identification‚ the unknown bacteria was added to many different testing medias using aseptic technique. They are as follows: lactose fermentation on eosin methylene blue (EMB)‚ TSI (Triple Sugar Iron agar)‚ Phenol
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