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1. Describe the functional requirements of an antiporter transport protein (i.e., what properties must the protein have to operate effectively?). Do antiporters represent an example of passive or active transport? Why?2. With reference to aquaporins or the bacterial K+ channel, describe how ion channels can ensure ion specificity while maintaining relatively high flow rates?3.K+ leak channels play an important role in re-establishing membrane potential across cell membranes. Since these channels are always open, how can the [K+] inside the cell be nearly 30X higher than the extracellular concentration at the K+ equilibrium point?
plants are important for humans in ways other than providing food. medicines clothing beauty fuel air quality building
Glycogen synthase catalyzes glycogen synthesis. determine whether each of the following are associated with an increase or decrease in glycogen synthase activity.
What is the name of the epithelial cells that make up the epidermis? -What is the cytoplasmic intermediate filament found in these epithelial cell junctions ? -What is the name of the junctions that links the intermediate filaments of the epitheli..
Considering non-vascular plants, describe the evidence that suggests that they were likely the first terrestrial plants. Which group of the nonvascular plants is the most primitive, and why? Be desciptive as possible.
explain the reason(s) the following description is inaccurate: in both cardiac and skeletal muscle cells, calcium ions enter the cell through Ca-channels in the transverse tubules to induce calcium release from the sarcoplasmic reticulum (SR).
Wellness is best described as one dimension, dynamic process, unrelated to one's environment, or static process.
Explain the mode of action of cholera in the human intestinal tract. What is the mode of transmission? What are "viable-but-non-culturable" bacteria, and how do they relate to cholera surveillance?
Hydrolases are one important class of enzyme that function to catalyze.
Describe the steps in performing a karyotype on an adult. Explain how the source of the cells is different in an antenatal testing. Write out the shorthand description of a normal female, normal male, Turner's syndrome, Kleinfelter's syndrome, and..
A recently married man and woman discover that each had an uncle with alkaptonuria, "black urine disease", a rare disease caused by an autosomal recessive allele of a single gene. they are about to have their first baby. what is the probability th..
Assume you are purifying a protein on a weak cation exchanger and it comes off at 300mM salt. predict what salt concentraiton the protein would come off if you used a strong cation exchanger.
Explain the events occurring in one multipolar neuron synapsing with a skeletal muscle cell. Start with a series of excitatory stimuli being delivered to a dendrite sufficient to generate an action potential.
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