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Assume that the Nernst potential (across a neurons plasma membrane) for Mg(2+) is a 100+ mv. Compute the fold concentration gradient for magnesium and describe in which direction it lies across the
What Intracellular second messenger is the main regulator of the physiological response of photoreceptors to stimulus?
Explain the molecular events which produce the ‘dark current' in photoreceptor cells; describe the impact of this cycle on the typical resting membrane potential and how light leads to the hyp
I want a description on how to use the Michaelis-Menton equation and how it correlates with the Michaelis - Menton plot (graph). Illustrations would be highly appreciated.
Which non-covalent interactions are most probable to be significant in protein-protein interactions in the aqueous environment?
Give two key insights into the evolutionary history of Neandertals which have been derived from the analysis of mitochondrial DNA (mtDNA). In what manners might the use of mtDNA be misleading or lim
If I had 1L of a 1.0M solution of glycine at the isoelectric pH (6.02) and I added 0.3 mol of HCL, what would be the new pH? Describe what would be the pH if I added 0.3 mol of NaOH rather than the
What kind of polypeptide would you make from this polynucleotide? Would you expect to have more than one polypeptide? Explain why?
If the rates of synthesis of both X and Y are suddenly raised tenfold to 10,000 molecules per second per cell devoid of any change in their degradation rates-how many molecules of X and Y will there
What are the chemical and spectroscopic reasons which make plants to appear green? As well why plants lose their green color in the autumn or on cooking?
Since calcium and magnesium salts of fatty acids are not soluble in water, explain how would you expect this to influence the usefulness of soap in hard water?
Does a high halogen number point out a more or less saturated fat? Explain why or why not? If so, would this specific lipid be considered by nutritionists to be more or less desirable in your diet?
1) Glycerol can as well enter the glycolysis pathway by being transformed to what? 2) Explain how many molecules of ATP is USED UP in the glycolysis pathway?
You are the owner of a company which sells cleaning products. The people in Research encompass two new products for you to review. The first is a kind of hand soap which they say will cut grease as
What function does the fluorescence have in pseudomonal fluorescent bacteria? These bacteria do not present much color when viewed via the microscope; however the name should carry some indication o
A 2500 base-pair long cDNA of unknown sequence was cloned to the MCS of a plasmid vector which has universal priming sequences adjacent to and on both sides of the MCS.
Explain how one would use the concepts of pH and pka to predict the ionization state of any given amino acid or its side chain in a protein.
Explain a metabolic pathway from any organism (bacterium, plant and animal) which peroxidase is involved.
Explain how do these three residue act to permit proteolysis? Can someone in brief describe to me the features of the chymostrypsin active site and the mechanism?
The phosphorylation and dephosphorylation of proteins is a fundamental means of regulation. Protein kinases attach phosphoryl groups, while phosphates eliminate the phosphoryl group from the target
Explain why does fluoracetate cause citrate to build up in the Citric Acid Cycle? Explain why do glucose and glycolysis reduce and hexose rises? Explain why is it fatal? What about fluoroacetyl-SCoA
If glucose-1 is the radioactive source, where is 14C in ethanol product? Anaerobic conditions. Where would it be if the 14C would be released as CO2 throughout fermentation?
Explain a well-controlled experiment to find out if the rise in internal free calcium observed in the cytoplasm of unfertilized sea urchin eggs in the presence of A23187 is due to influx of calcium
Cellular respiration is a method which takes place in numerous organisms. The rate of cellular respiration can be measured by using some different methods.
Explain why does the addition of oxaloacetate or malate stimulate the oxygen consumption?