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In a graded potential, what is the effect of cytoplasmic resistance and current leak?
a) More K+ is able to enter the cell, off-setting the depolarizing effects of Na+.
b) The strength of the signal inside the cell decreases over distance.
c) Fewer Na+ can cross the membrane in response to the stimulus.
d) The outer membrane surface becomes more positively charged, causing hyperpolarization.
why the sequences are read in different reading frames.
Suppose a person has spinal cord damage at the cervical level. Would this stop the knee-jerk reflex? How would it affect the plantar (Babinski) reflex?
Explain how you would build a Windkessel machine, including individual parts and assembly. How would you operate this machine? What cardiovascular physiology principle would machine display and how would you measure this phenomenon.
Lagniapposis is caused by a microparasite, Lagniappea calcasieuensis, and is transmitted directly by coughing and sneezing. It is highly transmissible and very virulent. Infected hosts become immune after a week if they do not die. Use the equatio..
Can a cell perform any activity to increase the rate of reaction when enzyme has reached saturation point?
An existing drug, OLD-STAT, is a competitive inhibitor of an enzyme that is too active in diabetes. The enzyme assay used to test and compare drug candidates is carried out at = 0.15 mM.
Provide a brief description of the experiment about cloning a portion of the bacteriophage Lambda genome into a plasmid using previously published works and cite them.
If a transferrin receptor has a cross-sectional area of 50 Angstroms X 100 angstroms (5x10nm), and how many receptors could be accomodated in a 100nm clathrin-coated vesicle assume that only 50% of surface area can be occupied by proteins.
n a folded protein, most of the nonpolar amino acids are buried inside the protein fold, whereas the polar and charged side chains are exposed to the components in the cytosol.
Defects in structures of cell can lead to various diseases. Pick one structure of eukaryotic cell and develop a hypothesis as to what you think implications would be if that structure did not function properly and determine where is genetic material ..
Based on human logic, if a parasite kills its host it is also harming itself. Tapeworms then appear to be perfect parasites because they cause very few symptoms in the host.
Suppose that 2-pigments, red and blue, mix to give the normal wild-type purple color of petunia petals. Separate biochemical pathways synthesize the two pigments.
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