Question in Biochemistry Also, I understand that this is somewhat related to bio

Question

Question in Biochemistry

Also, I understand that this is somewhat related to biochemistry, but what kind of books should I be studying to understand and find alike questions such as the one above? thanks!

1) Chemical energy and mechanical energy (work) are interconvertable a) If the free energy of ATP hydrolysis (AG) under cellular conditions is -12 kcal/mol, how much ATP (in moles) would I need to burn to lift a 1 kg weight from the ground to my desk 1 meter high? Assume your muscles are 100% efficient in this case photons at 600 nm (47 kcal/mol) would I need to absorb? 2) Consider two proteins A and B that interact via two hydrogen bonds that contribute -2 b) IfI could harness the energy of light without any loss to perform this task, how many kcal/mol each and two electrostatic bonds that contribute -3 kcal/mol each to the binding energy. What is the dissociation constant for this interaction? (Note, in this case the reaction is AB A B and the Keq takes all three species A, B and AB into account. Note also that Kool is normalized to standard conditions where all species are at 1M, and therefore Keq is unitless) 3) a) For a reaction that is governed by M-M kinetics, if I have a Vmax of 1 uM/s and a KM of 1 AM, what is the reaction rate if I my substrate concentration is 0.1 M? b) IfI decrease korby a factor of three, what is my new reaction rate? c) If I instead phosphorylate 80% of my enzyme and completely inactivate them, what is my new reaction rate? 4) Ionizable protons are in rapid equilibrium and so you can think of an amino acid having a relative charge between 0 and 1 or 0 and -1. Plot the relative charge of glutamate as a function of pH. Ignore the N- and C-termini and use Excel or some other program to make the plot. Note that the H-H equation is ratio of [basel[acid] and we want relative charge. Remember that groups will be in either base or acid form, so for a population [base] + [acid] = [total] 5) Imagine that a cell surface receptor for some hormone ligand has an extracellular ligand binding domain, a transmembrane domain, and an intracellular domain that is an enzyme that phosphorylates other proteins. When no ligand is bound, the enzyme is turned off and when ligand is bound the enzyme is fully active. Which will lead to the largest increase in the phosphorylation rate in the cel: doubling the number of receptors on the cell, doubling the hormone concentration, or doubling the affinity of the receptor for its ligand? Which will lead to the smallest increase in the phosphorylation rate? Explain your answer

Explanation / Answer

you can find these types questions in lehninger principles of biochemistry 6th edition.   

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