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Q1. The neurotransmitter acetylcholine is made in the cytosol and then transferred into synaptic vesicles, where its concentration is more than 100 fold higher than in the cytosol. Synaptic vesicles isolated from neurons can take up additional acetylcholine if it is added to solution in which they are suspended but only in the presence of ATP. Na+ ions are not required for acetylcholine uptake, but raising the pH of the solution in which the synaptic vesicles are suspended increases acetylcholine uptake. In addition, transport is inhibited consistent with all these observations. Propose a mechanism that is consistent with all these observations.
Q2. In winter, plants exchange the saturated lipids in their membranes for unsaturated lipids. Unsaturated lipids are "bent" and keep the membranes more fluid since they cannot be stacked closely together. Of what benefit would this be for herbaceous plants that live through the winter?
The number of bacteria in saliva samples was determined by collecting the saliva, making serial dilutions, and inoculating nutrient agar through pour plate method. The plates were incubated aerobically for 48 hours at 37C.
What are the disadvantage and advantage of each and which commonly applies to hospitality industry. How is this caused by the sympathetic nervous division.
Women's bladders, on average, are smaller than those of men. The distribution of bladder volume in women is approximately N (400, 75) in milliliters. Find the proportion of women's bladders with a volume between 500 and 600 ml.
Why the parents wake up, other than the children did didn't wake up. A gene for sweat gland production is found on the X chromosome.
At the end of the measurement period, which group will have produced the greatest volume of urine and which group the minimum? Describe your answer in details.
Osmometer cells in the brain sense an increase in concentration of the blood plasma. They then notify the posterior pituitary gland to release the hormone, ADH. This hormone causes the kidney to save water that lowers the concentration of the plasma.
Ralph is taking scuba diving classes, and is warned not to hold his breath as ascending from depth but to continuously release air from his mouth. What is the basis of this instruction and what is risk if it is ignored.
Monarch butterfly populations are found east and west of Rocky Mountains. How can DNA fingerprinting technology be used to establish that they constitute one breeding population or two separate breeding populations.
Changes in temperature and pH along with Substrate Concentration and Enzyme Concentration were the conditions tested in experiment. because warm water is less dense then cold water, would you predict any difference between spines of warm water indivi..
A mole of an assured compound contains 207.7 g of lead and 32.00g of oxygen. Without doing any calculations, tell whether a formula Unit of a compound contains more atoms of lead or more atoms of oxygen. Explain in details.
What was this experiment and why was it so significant? Diagram and briefly describe the steps of the process. How and why has recombinant DNA technology impacted biotechnology.
In an experiment you are studying a neuron that receives synaptic inputs from two other neurons: one from neuron A and one from neuron B. Illustrate a separate graph for each value of Vm.
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