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Q. It is known that calcium plays diverse roles in cellular processes. Upon increases in cytotoxic calcium concentration, calcium binds to proteins that have calcium binding sites, leading to the conformational change of the protein as well as changes in its biological activity. For in case, it is well established that in presynaptic neurons, the elevation of cytosolic calcium triggers the fusion of exocytotic vesicles that contain neurotransmitters to the plasma membrane.
A.) How does calcium trigger the fusion of exocytotic vesicles to the plasma membrane?
B.) How does the presynaptic neuron transducer an action-potential signal to a postsynaptic neuron?
In Drosophila, vestigial (partially formed) wings (vg) are recessive to normal long wings (vg+) and the gene for this trait is autosomal. The gene for the white-eye trait is on the X chromosome.
The delta G for hydrolysis of the amide group from glutamine is -14.2 kJ/mol at 25C. Compute the keq' for this hydrolysis.
The chloroplast genome of most photosynthetic eukaryotes is roughly five percent the size of the genome of the cyanobacterium from which it is thought to have been derived.
Discuss how the unique physical and chemical properties of water contribute to the importance of water for life on Earth to survive.
One in 1700 Caucasian new borns have cystic fibrosis. What is the allele frequency for the normal (C) and disease (c) alleles? What are the genotype frequencies?
1. Explain how a decrease in pH and oxygen levels in the blood and interstitial fluid affects the heart, blood vessels, hemoglobin dissociation curve, and the respiratory system.
An organism's genome contains four pairs of chromosomes. Assuming that crossing over does not occur, how man unique gamete types can be produced in this organism? What is the probability that a gamete will contain all of the paternal chromosomes?
Based on the theory of evolution, which will adapt quickest an endangered species (say the kit fox) or the wide ranging and highly variable red fox?
A very common type of red or green colorblindness in humans is a X-linked recessive trait. A woman who is red or green colorblind marries a man with normal color vision.
Compare and contrast gas exchange in lungs,gills and trachea. Give an example of a taxon that uses each. Describe the main components of each respiratory system
Luisa is swinging on a playground swing at school. A teacher facing her blows a whistle to let the children know recess is over. As Luisa swings, what does she hear? When does she hear the highest pitch?
Why use starved starved yeast rather than sugar fed yeasts for fermentation.What is the aim of ferementation after glycolysis.
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