Describe two specific catalytic mechanisms that enzymes may use to speed up a reaction and describe...

Describe two specific catalytic mechanisms that enzymes may use to speed up a reaction and describe two molecular mechanisms which regulate enzyme activity

Expert Solution

Mechanisms of enzyme catalysis vary, here The reduction of activation energy (Ea) increases the fraction of reactant molecules that can overcome this barrier and form the product. The used principle is that since they only reduce energy barriers between products and reactants, enzymes always catalyze reactions in both directions, and cannot drive a reaction forward or affect the equilibrium position - only the speed with which is it achieved.

Incase of other catalysts, the enzyme is not consumed or changed by the reaction (as a substrate is) but is recycled. So it results in the use of the single enzyme performing many rounds of catalysis.

Regulatory molecules are the molecules used for the reaction catalysis here, the enzymes can be regulated by molecules that either increase or reduce their activity. Molecules that increase the activity of an enzyme are called activators, while molecules that decrease the activity of an enzyme are called inhibitors.

gladiator answered 2 years ago

How does an enzyme lower the activation energy? What are the specific catalytic mechanisms? What are...

How does an enzyme lower the activation energy? What are the specific catalytic mechanisms? What are the three types of specific catalytic mechanisms?

Describe why Histidine is often found in active sites and is involved in the catalytic mechanisms...

Describe why Histidine is often found in active sites and is involved in the catalytic mechanisms of enzymes. What role does it generally play in catalytic mechanisms? Draw an example of a catalytic mechanism that involves Histidine as a critical amino acid residue.

Describe the mechanisms that confine cells and tissues to a specific anatomic site. Discuss the use...

Describe the mechanisms that confine cells and tissues to a specific anatomic site. Discuss the use of tumor markers in cancer diagnoses. Which types of cancer can be diagnosed in this manner? How do tumor markers work? What are the markers actually measuring?

describe two enzymes found in the mouth, two enzymes found in the stomach, and two enzymes...

describe two enzymes found in the mouth, two enzymes found in the stomach, and two enzymes found in the small intestines and describe one organic compound that each enzyme breaks down.....i need a good and understandable explanation , answer for this question ,thank u

Discuss the pathologic mechanisms of atherosclerosis and come up with a list of all the specific...

Discuss the pathologic mechanisms of atherosclerosis and come up with a list of all the specific pathologies (and clinical states) which you can.

Describe TWO specific cellular mechanisms through which a bacterium can become resistant to an antibiotic. –...

Describe TWO specific cellular mechanisms through which a bacterium can become resistant to an antibiotic. – Please note that this question is NOT about practices or actions we do that contribute to antibiotic resistance in bacteria, such as not taking the entire prescribed dose. Please remember that bacterial cells become resistant or tolerant to antibiotics, NOT human cells, or the human body. – *** Perform some research in the college's online library, a microbiology textbook, and other credible scientific sources...

Describe ALL of the following mechanisms in detail. Remember to include all enzymes, molecules, steps to...

Describe ALL of the following mechanisms in detail. Remember to include all enzymes, molecules, steps to the process, cis-acting as well as trans-acting elements, etc. You can draw a flow chart type of picture along with an explanation if you want – as long as your answer is thorough and contains ALL of the required information. a. RNA Splicing via spliceosomes b. Transcriptional activation of a eukaryotic gene (include Chromatin Remodeling ) c. Transcription in prokaryotes (include Initiation, Elongation and...

Describe how CI-M6PR deliveries newly-synthesized enzymes to the lysosome? You may use diagrams to explain or...

Describe how CI-M6PR deliveries newly-synthesized enzymes to the lysosome? You may use diagrams to explain or enhance your answer. What’s part of the responsible for the mechanism underlying I-cell disease.

The use of TLC to monitor the reaction of vanillin with enzymes produced by yeast relies...

The use of TLC to monitor the reaction of vanillin with enzymes produced by yeast relies on the fact that the reactant and product are expected to have very different Rf values. Could you use the same approach to monitor other reactions in which the reactant and product have very different Rf values? Explain this concept clearly, using diagrams to illustrate what you would expect to observe during a TLC analysis (as the reaction progresses toward completion) when the product...

A zinc ion in the active site of an enzyme can speed up the reaction by:...

A zinc ion in the active site of an enzyme can speed up the reaction by: A. Making a bound water molecule a more powerful nucleophile by drawing electron density toward itself and facilitating deprotonation of the water B. Orienting substrates for reaction C. Stabilizing an anionic intermediate D. All of these E. None of these The role of serine at the active site of serine proteases is to act as a ___ catalyst, while the histidine residue serves as...

Question