When amphipathic biomolecules form micelles in polar solvents, this is an example of increasing entropy in the solvent True False
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- the characteristics of water insoluble substances that is most important in governing its diffusibility through a cell membrane is its?Driven by the hydrophobic effect, certain______ molecules form bilayers. zwitterionic amphotheric amphiphilic amphibolic allostericA scaffold protein can serve as a platform to accommodate a collection of enzymes involved in catalyzing multi-step reactions. Imagine a scaffold protein that anchors its soluble enzymes to be located near the cytoplasmic membrane. What interactions does the scaffold protein likely use to achieve this? Electrostatic interactions through a domain inserted into the membrane, and hydrophobic interactions with the enzymes. O Hydrophobic interactions through a domain inserted into the membrane, and hydrophobic interactions with the enzymes. O Electrostatic interactions through a domain inserted into the membrane, and electrostatic interactions with the enzymes. O Hydrophobic interactions through a domain inserted into the membrane, and electrostatic interactions with the enzymes.
- ATP, which is loosely bound to the glycolytic enzyme hexokinase, can be correctly categorized as all of the following except: an inorganic cofactor an organic cofactor a cosubstrate a coenzyme a cofactorIdentify if A B C D and E are a hypotonic, hypertonic, or isotonic solution using the information given Solution Concentration= sugarThe transverse diffusion of lipids is thermodynamically unfavorable because of the difficulty of its hydrophilic head to pass through an internal hydrophobic environment. True False
- The investigators reported that the sphingosine kinase enzyme attached to the DEAE column when Tris was used as a buffer, but not when a phosphate buffer at the same pH was used. Explain the difference in behavior. The structure of the conjugate base of the Tris buffer is shown below. Hint: consider what charges all these molecules have at pH 7.4All coenzymes are cofactors, but not all cofactors are coenzymes. Explain this statement briefly.Changes in temperature affect membrane properties. Howwould you expect the lipid composition of thermophilemembranes to differ from those of prokaryotes that live atmore normal temperatures?
- Antioxidants have been described as compounds that protect or safeguard biomolecules against oxidative damage. list three (3) ways in which these compounds confer protection to biomolecules. Please answer as comprehensive as posiible.calculate the turnover number for an enzyme, assuming Vmax is 0.5M.sec-1 and the concentration of the enzyme used is 0.002M . why is it usefull to know this?Explain using terms related to equilibrium and free energy why a microorganism that gets its energy from a nonspontaneous reaction under standard conditions may actually be able to survive in a specific environment. Be clear and concise in four sentences or fewer..
