Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1. Which of the following is the cell type most directly relevant to battling the pathogens the bullet likely carried into the brain of Rep. Gabrielle Giffords?A. Schwann cellsB. microgliaC. oligodendrocytesD. astrocytesE. arachnoid villi2. Which of the following is a cell type important for re-myelinating axons in damaged portions of the recovering brain of Rep. Gabrielle Giffords?A. Schwann cellsB. microgliaC. oligodendrocytesD. astrocytesE. arachnoid villi3. Which of the following is the cell type interacting with endothelial cells via endfeet in the recovering brain of Rep. Gabrielle Giffords?A. Schwann cellsB. microgliaC. oligodendrocytesD. astrocytesE. arachnoid villi4. Rep. Gabrielle Giffords had to remain in the intensive care unit for longer than originally planned because of excessive intracranial pressure. Which of the following is most relevant to the uptake of the fluid responsible for causing this pressure?A. carotid arteryB. choroid plexusC. oligodendrocytesD. astrocytesE. arachnoid villi5. Determine which of the following correctly describes how myelination alters the passive properties of the neuronal membrane?A. causes faster decay of depolarization by reducing resistanceB. increases resistance, reduces capacitanceC. regenerates the action potential after skipping a large stretch of axonD. decreases flux through Na+ channels, thereby speeds up action potentialE. none of the above are completely correct MCDB 4777/5777 2/2/11 EXAM I Page 26. Which factors contribute to the squid axon's refractory period?A. inactivation domain of voltage gated potassium channel; flux through voltage gated sodium channelB. inactivation domain of voltage gated sodium channel; flux through voltage gated potassium channelC. inactivation domain of voltage gated sodium channel; flux through Na+/K+ ATPaseD. inactivation domain of calcium gated potassium channel; flux through inward rectifier potassium channelE. none of the above are completely correct7. In which of the following ways does the voltage-gated "delayed rectifier" potassium channel in the squid giant axon (i.e. the channel we discussed as important in the action potential) differ from the voltage-gated sodium channels?A. depolarization causes the sodium channels to inactivate after their activationB. the potassium channels lack selective permeabilityC. flux through potassium channels does not affect the shape of the action potentialD. the potassium channels only allow ions to flow one wayE. potassium channels are formed from a single polypeptide chain having multiple similar domains,whereas sodium channels are tetramers8. The proteins that use ATP to establish the ionic gradients responsible for action potentials are part of the larger category of:A. ligand-gated ion channelsB. passive transportersC. voltage-gated ion channelsD. inward rectifier or "leak" channelsE. active transporters9. The example of NaV1.7, mutated in some congenital pain syndromes, provide evidence of all of the following excepta.a mutation in an ion channel can lead to perception of stimuli that are not presentb. the sodium channel gene family likely evolved so that multiple different sodium channels can be expressed in a single neuronc. targeting ion channels encoded by specific genes could lead to therapeutics with fewer side effectsd. different sodium channel genes are redundant, so loss of function of an individual gene has little effecte. amino acid substitutions in many different parts of ion channels can lead to functional changes10. The voltage clamp technique is most useful for...a. measuring the resting potential (voltage) of the membraneb. determining the normal shape of action potentials in an axonc. determining the ion concentrations inside and outside the axond. measuring membrane permeability as a function of voltagee. testing whether changing the concentration of an ion influences membrane voltage
You get a soil sample and run an enrichment culture on it. You give the organisms in the culture with all of the ingredients required for growth except for nitrogen. What result do you expect to have at the end of the experiment.
When a nucleic acid undergoes hydrolysis, resulting subunits
Explain the pathway of the conduction from the atria to the ventricles and correlate this conduction with the ECG waves.
Blood glucose was monitored weekly for all mice. After five weeks, there was no change in average body weight between groups.
What kind of measure is useful in investigating the epidemics? Enlist the steps you would carry out for detecting or investigating an outbreak.
Explain the reverse transcription reaction (what are the components of the reaction? What are the possible primers for the reaction and how do they differ from each other?)
How does your answer make clear that why antibiotic resistance evolves so fast. What is the equilibrium frequency of the resistant allele in the absence of methicillin.
Find out the number of triplet codons feasible
The fruit in summer squash may have different shapes. When 2-true breeding plants with disc-shaped fruit were crossed to true breeding plants with long fruit,
You are a scientist working on a large protein (500 amino acids long) you have genetically engineered the protein in in such a way as to replace a single hydrophobic amino acid with a negatively charged amino acid.give the difference between prima..
After one minute, ask your subjects to close their eyes. Once their eyes are closed, ask them to recite everything in the room that is different colour than the one they were looking for, for in case, anything and everything that is green.
What caused the symptoms? What treatment has to have been administered in July? What treatment must be administered 2 years later.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd