In: Biology
27. Which of the following statements is not true concerning protein folding? a. Proteins fold around a hydrophobic core b. The interior of proteins is held together exclusively by hydrophobic interactions c. The amino acid sequence of a protein is responsible for determining the shape of a protein d. The active conformation of a protein is it most thermodynamically favorable state e. none of the above
In: Biology
List the sequence of structures that a single amino acid (initially in a protein molecule that you eat) goes through from the moment it passes your lips to when it ends up in a hepatocyte. Then explain what (if any) chemicals relevant to digestive physiology it is exposed to at each step and what happens to the protein and eventually protein fragments each step of the way.
In: Anatomy and Physiology
In: Biology
In: Biology
Suppose that a particular reaction has a ΔG=(-18) and an EA=9. It is noted that there is no detectable conversion of the reactions into products.
Select all of the things that would be expected to result in the production of significant amounts of product:
______________________
| Transferring the reaction to an aqueous environment |
| Increasing temperature |
| Using energy to synthesize ATP |
| Decreasing the pH |
| Adding enzyme |
In: Chemistry
Which of the following directly or indirectly results from an increase in action potential frequency/number in serotonergic neurons?
| a. |
Greater production of BH4 |
|
| b. |
Greater production of the first unique synthetic protein in these neurons |
|
| c. |
Increase in the affinity of BH4 of the first unique synthetic enzyme in these neurons |
|
| d. |
End-product inhibition |
In: Biology
The lac operon is regulated via positive and negative
regulation. Explain how each
mechanism works on this operon, and under which circumstances will
the operon be
turned on. Include the definition of an operon
2. What are the advantages to a microbe of having inducible
enzymes? What is the
function of toluene in the experiment where you induced enzyme
function?
In: Biology
Angiotensin-converting enzyme (ACE) inhibitor drug enalaprilat is used to treat hypertension and has poor oral bioavailability as well as a short half-life. What functional groups and properties of the drug may be responsible for these drawbacks and what can be done to modify the structure to improve both oral bioavailability and half-life?
In: Biology
In: Biology